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Zhang P, Zhang X, Wang Y, Feng N, Wan H, Guan G. Effect of inserting Cr in promoting the deep oxidation of dichloromethane over Co/WNb catalysts at low temperatures. JOURNAL OF HAZARDOUS MATERIALS 2024; 477:135389. [PMID: 39094309 DOI: 10.1016/j.jhazmat.2024.135389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2024] [Revised: 07/07/2024] [Accepted: 07/30/2024] [Indexed: 08/04/2024]
Abstract
Enhancing catalytic activity while inhibiting the generation of chlorine byproducts is essential in the catalytic oxidation process of chlorinated volatile organic compounds (CVOCs). In this study, Cr-modified Co/WNb catalysts were synthesized and utilized for the degradation of dichloromethane (DCM). It was found that the moderate introduction of Cr exposed more Cr6+ on the catalyst surface due to the interaction between cobalt and chromium oxides, which promoted the generation of more chemisorbed oxygen on the surface, thus improving the redox properties and enhancing the activity of the catalysts. Additionally, the introduction of Cr increased the B acid sites of the catalysts, promoting the breaking of C-Cl bonds and the removal of dissociated Cl- Meanwhile, the improved redox properties also allowed further oxidation of the dissociated activated intermediate products and inhibited the generation of chlorine byproducts. The catalyst activity was optimal when the Cr to Co molar ratio was 4, which the T90 of DCM was 256 °C and the monochloromethane selectivity was only 1.7 %. Moreover, Co4Cr/WNb showed excellent chlorine and water resistance, making it an ideal candidate for CVOC degradation.
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Affiliation(s)
- Pengfei Zhang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing Tech University, Nanjing 210009, PR China; Xitaihu Lake Industrial College, Nanjing Tech University, Changzhou 213149, PR China
| | - Xi Zhang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing Tech University, Nanjing 210009, PR China; Xitaihu Lake Industrial College, Nanjing Tech University, Changzhou 213149, PR China
| | - Yujie Wang
- School of Materials and Chemical Engineering, Chuzhou University, Chuzhou, Anhui 239000, PR China
| | - Nengjie Feng
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing Tech University, Nanjing 210009, PR China.
| | - Hui Wan
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing Tech University, Nanjing 210009, PR China
| | - Guofeng Guan
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing Tech University, Nanjing 210009, PR China
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2
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Fang Y, Yang J, Pan C. The Surface/Interface Modulation of Platinum Group Metal (PGM)-Free Catalysts for VOCs and CO Catalytic Oxidation. ACS APPLIED MATERIALS & INTERFACES 2024; 16:37379-37389. [PMID: 38981038 DOI: 10.1021/acsami.4c08018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/11/2024]
Abstract
Effective management of volatile organic compounds (VOCs) and carbon monoxide (CO) is critical to human health and the ecological environment. Catalytic oxidation is one of the most promising technologies for achieving efficient VOCs and CO emission control. Platinum group metal (PGM)-free catalysts are recently receiving sustainable attention in catalyzing VOCs and CO removal due to their low cost, superior catalytic activity, and excellent stability, but PGM-free catalysts face challenges in low-temperature catalytic efficiency. In this mini-review, starting with discussing the catalytic mechanism of VOCs and CO oxidation, we summarize the surface/interface modulation strategies of PGM-free catalysts to promote oxygen and VOCs/CO molecule activation for enhanced low-temperature oxidation activity, including oxygen vacancy engineering, heteroatom doping, surface acidity modification, and active interface construction. We highlight the currently remaining challenges and prospects of advanced PGM-free catalyst development for highly efficient VOCs and CO emission control in practical applications.
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Affiliation(s)
- Yarong Fang
- School of Environmental Science and Engineering, Nanjing Tech University, Nanjing 211816, P. R. China
| | - Ji Yang
- Energy Storage and Distributed Resources Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Chuanqi Pan
- Henan Academy of Sciences, Zhengzhou 450046, P. R. China
- Institute of Chemistry, Henan Academy of Sciences, Zhengzhou 450002, P. R. China
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3
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Dai Q, Xu R, Xia H, Qiao B, Niu Q, Wang L, Wang A, Guo Y, Guo Y, Wang W, Zhan W. Catalytic Hydrolysis-Oxidation of Halogenated Methanes over Phase- and Defect-Engineered CePO 4: Halogenated Byproduct-Free and Stable Elimination. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024. [PMID: 39037090 DOI: 10.1021/acs.est.4c04436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/23/2024]
Abstract
Catalytic elimination of halogenated volatile organic compound (HVOC) emissions was still a huge challenge through conventional catalytic combustion technology, such as the formation of halogenated byproducts and the destruction of the catalyst structure; hence, more efficient catalysts or a new route was eagerly desired. In this work, crystal phase- and defect-engineered CePO4 was rationally designed and presented abundant acid sites, moderate redox ability, and superior thermal/chemical stability; the halogenated byproduct-free and stable elimination of HVOCs was achieved especially in the presence of H2O. Hexagonal and defective CePO4 with more structural H2O and Brønsted/Lewis acid sites was more reactive and durable compared with monoclinic CePO4. Based on the phase and defect engineering of CePO4, in situ diffuse reflectance infrared Fourier transform spectra (DRIFTS), and kinetic isotope effect experiments, a hydrolysis-oxidation pathway characterized by the direct involvement of H2O was proposed. Initiatively, an external electric field (5 mA) significantly accelerated the elimination of HVOCs and even 90% conversion of dichloromethane could be obtained at 170 °C over hexagonal CePO4. The structure-performance-dependent relationships of the engineered CePO4 contributed to the rational design of efficient catalysts for HVOC elimination, and this pioneering work on external electric field-assisted catalytic hydrolysis-oxidation established an innovative HVOC elimination route.
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Affiliation(s)
- Qiguang Dai
- State Key Laboratory of Green Chemical Engineering and Industrial Catalysis, Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Ronghua Xu
- State Key Laboratory of Green Chemical Engineering and Industrial Catalysis, Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Hangqi Xia
- Erdos Electric Power and Metallurgy Group Co. Ltd., Ordos 016064, Inner Mongolia, P. R. China
| | - Boyuan Qiao
- Erdos Electric Power and Metallurgy Group Co. Ltd., Ordos 016064, Inner Mongolia, P. R. China
| | - Qiang Niu
- Erdos Electric Power and Metallurgy Group Co. Ltd., Ordos 016064, Inner Mongolia, P. R. China
| | - Li Wang
- State Key Laboratory of Green Chemical Engineering and Industrial Catalysis, Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Aiyong Wang
- State Key Laboratory of Green Chemical Engineering and Industrial Catalysis, Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Yun Guo
- State Key Laboratory of Green Chemical Engineering and Industrial Catalysis, Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Yanglong Guo
- State Key Laboratory of Green Chemical Engineering and Industrial Catalysis, Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Wei Wang
- School of Environmental Science and Engineering, Changzhou University, Changzhou, Jiangsu 213164, P. R. China
| | - Wangcheng Zhan
- State Key Laboratory of Green Chemical Engineering and Industrial Catalysis, Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
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4
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Jiang B, Hua H, Lin J, Guchen Y, Han J, Sun Y. The modification of surface basicity and its role in naphthalene oxidation: The effect of the basic sites introduced by Ce. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 362:121334. [PMID: 38824890 DOI: 10.1016/j.jenvman.2024.121334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Revised: 04/23/2024] [Accepted: 05/30/2024] [Indexed: 06/04/2024]
Abstract
A series of V-xCe/Ti catalysts was prepared by a step impregnation method with gradual increased Ce amount. Compared to the commercial V-W/Ti catalysts, the V-xCe/Ti catalysts exhibited considerably higher COx selectivity during the oxidation of naphthalene (Nap), and less intermediates or by-products were detected both in gas phase and on the surface of the catalysts. Through a series of characterizations, it was found that abundance of weak basic sites in the form of OH was introduced by Ce, as well as the oxygen vacancies caused by the redox cycle of V4++Ce4+↔V5++Ce3+. The weak basic sites introduced by Ce could greatly enhance the Nap adsorption, and the Nap adsorbed was quickly converted to naphthol on Ce-OH. Furthermore, V existed at a high valence with the interaction of V and Ce, and the oxygen vacancies also increased the Oads and OOH. It improved the redox ability and the regeneration of Ce-OH on V-xCe/Ti catalysts. The intermediates could be further oxidized, and the Ce-OH consumed in the reaction could recover quickly. Therefore, almost 100% Nap conversion and a high COx selectivity was observed in the V-xCe/Ti catalysts system.
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Affiliation(s)
- Boqiong Jiang
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China; Zhejiang Province Key Laboratory of Solid Waste Treatment and Recycling, Hangzhou, 310012, China
| | - Hao Hua
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Jianxiang Lin
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Yijing Guchen
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Jingyi Han
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Yuhai Sun
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China; Zhejiang Province Key Laboratory of Solid Waste Treatment and Recycling, Hangzhou, 310012, China.
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5
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Yang H, Chen A, Wang F, Lan T, Zhang J, Hu X, Shen Y, Cheng D, Zhang D. Phosphotungstic Acid as a Dechlorination Agent Collaborates with CeO 2 for Synergistic Catalytic Elimination of NO x and Chlorobenzene. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024; 58:7672-7682. [PMID: 38639327 DOI: 10.1021/acs.est.4c02246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/20/2024]
Abstract
The development of efficient technologies for the synergistic catalytic elimination of NOx and chlorinated volatile organic compounds (CVOCs) remains challenging. Chlorine species from CVOCs are prone to catalyst poisoning, which increases the degradation temperature of CVOCs and fails to balance the selective catalytic reduction of NOx with the NH3 (NH3-SCR) performance. Herein, synergistic catalytic elimination of NOx and chlorobenzene has been originally demonstrated by using phosphotungstic acid (HPW) as a dechlorination agent to collaborate with CeO2. The conversion of chlorobenzene was over 80% at 270 °C, and the NOx conversion and N2 selectivity reached over 95% at 270-420 °C. HPW not only allowed chlorine species to leave as inorganic chlorine but also enhanced the Bro̷nsted acidity of CeO2. The NH4+ produced in the NH3-SCR process can effectively promote the dechlorination of chlorobenzene at low temperatures. HPW remained structurally stable in the synergistic reaction, resulting in good water resistance and long-term stability. This work provides a cheaper and more environmentally friendly strategy to address chlorine poisoning in the synergistic reaction and offers new guidance for multipollutant control.
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Affiliation(s)
- Huiqian Yang
- International Joint Laboratory of Catalytic Chemistry, State Key Laboratory of Advanced Special Steel, Innovation Institute of Carbon Neutrality, Research Center of Nano Science and Technology, Department of Chemistry, College of Sciences, Shanghai University, Shanghai 200444, China
| | - Aling Chen
- International Joint Laboratory of Catalytic Chemistry, State Key Laboratory of Advanced Special Steel, Innovation Institute of Carbon Neutrality, Research Center of Nano Science and Technology, Department of Chemistry, College of Sciences, Shanghai University, Shanghai 200444, China
| | - Fuli Wang
- International Joint Laboratory of Catalytic Chemistry, State Key Laboratory of Advanced Special Steel, Innovation Institute of Carbon Neutrality, Research Center of Nano Science and Technology, Department of Chemistry, College of Sciences, Shanghai University, Shanghai 200444, China
| | - Tianwei Lan
- International Joint Laboratory of Catalytic Chemistry, State Key Laboratory of Advanced Special Steel, Innovation Institute of Carbon Neutrality, Research Center of Nano Science and Technology, Department of Chemistry, College of Sciences, Shanghai University, Shanghai 200444, China
| | - Jin Zhang
- International Joint Laboratory of Catalytic Chemistry, State Key Laboratory of Advanced Special Steel, Innovation Institute of Carbon Neutrality, Research Center of Nano Science and Technology, Department of Chemistry, College of Sciences, Shanghai University, Shanghai 200444, China
| | - Xiaonan Hu
- International Joint Laboratory of Catalytic Chemistry, State Key Laboratory of Advanced Special Steel, Innovation Institute of Carbon Neutrality, Research Center of Nano Science and Technology, Department of Chemistry, College of Sciences, Shanghai University, Shanghai 200444, China
| | - Yongjie Shen
- International Joint Laboratory of Catalytic Chemistry, State Key Laboratory of Advanced Special Steel, Innovation Institute of Carbon Neutrality, Research Center of Nano Science and Technology, Department of Chemistry, College of Sciences, Shanghai University, Shanghai 200444, China
| | - Danhong Cheng
- International Joint Laboratory of Catalytic Chemistry, State Key Laboratory of Advanced Special Steel, Innovation Institute of Carbon Neutrality, Research Center of Nano Science and Technology, Department of Chemistry, College of Sciences, Shanghai University, Shanghai 200444, China
| | - Dengsong Zhang
- International Joint Laboratory of Catalytic Chemistry, State Key Laboratory of Advanced Special Steel, Innovation Institute of Carbon Neutrality, Research Center of Nano Science and Technology, Department of Chemistry, College of Sciences, Shanghai University, Shanghai 200444, China
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6
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Lv X, Wu S, Shao S, Yan D, Xu W, Jia H, He H. Efficient Catalytic Elimination of Chlorobenzene Based on the Water Vapor-Promoting Effect within Mn-Based Catalysts: Activity Enhancement and Polychlorinated Byproduct Inhibition. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024; 58:3985-3996. [PMID: 38357760 DOI: 10.1021/acs.est.3c09020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/16/2024]
Abstract
Achieving no or low polychlorinated byproduct selectivity is essential for the chlorinated volatile organic compounds (CVOCs) degradation, and the positive roles of water vapor may contribute to this goal. Herein, the oxidation behaviors of chlorobenzene over typical Mn-based catalysts (MnO2 and acid-modified MnO2) under dry and humid conditions were fully explored. The results showed that the presence of water vapor significantly facilitates the deep mineralization of chlorobenzene and restrains the formation of Cl2 and dichlorobenzene. This remarkable water vapor-promoting effect was conferred by the MnO2 substrate, which could suitably synergize with the postconstructed acidic sites, leading to good activity, stability, and desirable product distribution of acid-modified MnO2 catalysts under humid conditions. A series of experiments including isotope-traced (D2O and H218O) CB-TPO provided complete insights into the direct involvement of water molecules in chlorobenzene oxidation reaction and attributed the root cause of the water vapor-promoting effect to the proton-rich environment and highly reactive water-source oxygen species rather than to the commonly assumed cleaning effect or hydrogen proton transfer processes (generation of active OOH). This work demonstrates the application potential of Mn-based catalysts in CVOCs elimination under practical application conditions (containing water vapor) and provides the guidance for the development of superior industrial catalysts.
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Affiliation(s)
- Xuelong Lv
- Xiamen Key Laboratory of Materials for Gaseous Pollutant Control, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
- Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
- CAS Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Shuaining Wu
- Xiamen Key Laboratory of Materials for Gaseous Pollutant Control, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
- Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
- CAS Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Siting Shao
- Xiamen Key Laboratory of Materials for Gaseous Pollutant Control, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
- Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
- CAS Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Dongxu Yan
- Xiamen Key Laboratory of Materials for Gaseous Pollutant Control, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
- Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
- CAS Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Wenjian Xu
- Xiamen Key Laboratory of Materials for Gaseous Pollutant Control, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
- Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
- CAS Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hongpeng Jia
- Xiamen Key Laboratory of Materials for Gaseous Pollutant Control, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
- Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
- CAS Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hong He
- Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
- CAS Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
- University of Chinese Academy of Sciences, Beijing 100049, China
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
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7
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Su Y, Cao K, Lu Y, Meng Q, Dai Q, Luo X, Lu H, Wu Z, Weng X. Surface-Phosphorylated Ceria for Chlorine-Tolerance Catalysis. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024; 58:1369-1377. [PMID: 38048160 DOI: 10.1021/acs.est.3c06878] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/06/2023]
Abstract
An improved fundamental understanding of active site structures can unlock opportunities for catalysis from conceptual design to industrial practice. Herein, we present the computational discovery and experimental demonstration of a highly active surface-phosphorylated ceria catalyst that exhibits robust chlorine tolerance for catalysis. Ab initio molecular dynamics (AIMD) calculations and in situ near-ambient pressure X-ray photoelectron spectroscopy (in situ NAP-XPS) identified a predominantly HPO4 active structure on CeO2(110) and CeO2(111) facets at room temperature. Importantly, further elevating the temperature led to a unique hydrogen (H) atom hopping between coordinatively unsaturated oxygen and the adjacent P═O group of HPO4. Such a mobile H on the catalyst surface can effectively quench the chlorine radicals (Cl•) via an orientated reaction analogous to hydrogen atom transfer (HAT), enabling the surface-phosphorylated CeO2-supported monolithic catalyst to exhibit both expected activity and stability for over 68 days during a pilot test, catalyzing the destruction of a complex chlorinated volatile organic compound industrial off-gas.
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Affiliation(s)
- Yuetan Su
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental and Resource Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, P. R. China
| | - Kexin Cao
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental and Resource Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, P. R. China
| | - Yunhao Lu
- Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, P. R. China
| | - Qingjie Meng
- School of Civil & Environmental Engineering and Geography Science, Ningbo University, Ningbo 315211, P. R. China
| | - Qiguang Dai
- Key Laboratory for Advanced Materials, Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Xueqing Luo
- ZJU-Hangzhou Global Scientific and Technological Innovation Center, Hangzhou 311200, P. R. China
| | - Hanfeng Lu
- Institute of Catalytic Reaction Engineering, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Zhongbiao Wu
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental and Resource Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, P. R. China
- Zhejiang Provincial Engineering Research Centre of Industrial Boiler & Furnace Flue Gas Pollution Control, 388 Yuhangtang Road, Hangzhou 310058, P. R. China
| | - Xiaole Weng
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental and Resource Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, P. R. China
- ZJU-Hangzhou Global Scientific and Technological Innovation Center, Hangzhou 311200, P. R. China
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8
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Gu H, Lan J, Hu H, Jia F, Ai Z, Zhang L, Liu X. Surface oxygen vacancy-dependent molecular oxygen activation for propane combustion over α-MnO 2. JOURNAL OF HAZARDOUS MATERIALS 2023; 460:132499. [PMID: 37683342 DOI: 10.1016/j.jhazmat.2023.132499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2023] [Revised: 08/26/2023] [Accepted: 09/05/2023] [Indexed: 09/10/2023]
Abstract
Oxygen vacancies (OV), as the sites of molecular oxygen adsorption and activation, play an important role in the catalytic combustion process of volatile organic compounds (VOCs). Revealing the relationship between OV concentration and molecular oxygen activation behavior is of significance to construct the efficient catalysts. Herein, α-MnO2 with different OV concentrations was prepared to investigate the molecular oxygen activation for C3H8 combustion. It is disclosed that the enhanced OV concentration in α-MnO2 induced the reconfiguration of surface metal atoms, resulting in the transformation of oxygen activation configuration from end-on mode to side-on mode. Oxygen molecules in side-on mode possessed more localized electron density and weaker coordination bond strength with surrounding Mn atoms, which were more favorable to adsorb C3H8 molecules and activate C-H bond for the improved combustion performance. This work provides a new understanding to reveal that the increased OV concentration contributes to more efficient VOCs combustion.
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Affiliation(s)
- Huayu Gu
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, PR China
| | - Jintong Lan
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, PR China
| | - Haolu Hu
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, PR China
| | - Falong Jia
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, PR China
| | - Zhihui Ai
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, PR China
| | - Lizhi Zhang
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, PR China; School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China
| | - Xiao Liu
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, PR China.
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9
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Zhang Y, Wang Y, Liu Y, Zhou L, Xu H, Wu Z. Simultaneous Generation of Ammonia during Nitrile Waste Gas Purification over a Silver Single-Atom-Doped Ceria Catalyst. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:12513-12522. [PMID: 37542459 DOI: 10.1021/acs.est.3c03667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/07/2023]
Abstract
Catalytic elimination of toxic nitrile waste gas is of great significance for preserving the atmospheric environment, but achieving resource utilization during its destruction has been less explored. Herein, this study proposed a universal strategy for nitrile waste gas purification and NH3 generation simultaneously. The developed silver single-atom-doped ceria nanorod (Ag1/R-CeO2) was endowed with near complete mineralization and around 90% NH3 yield at 300-350 °C for the catalytic oxidation of both acetonitrile and acrylonitrile. The introduction of the Ag single atom created more surface oxygen vacancies, thereby promoting water activation to form abundant surface hydroxyl groups. As a benefit from this, the hydrolysis reaction of nitrile to generate NH3 was accelerated. Meanwhile, the electron transfer effect from the Ag atom to Ce and hydroxyl species facilitated NH3 desorption, which inhibited the oxidation of NH3. Moreover, the increased surface oxygen vacancies also promoted the mineralization of hydrolysis carbonaceous intermediates to CO2. In contrast, the Ag nanoparticle-modified sample possessed stronger reducibility and NH3 adsorption, leading to the excessive oxidation of NH3 to N2 and NOx. This work provided a useful guidance for resourceful purification of nitrile waste gas.
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Affiliation(s)
- Yaoyu Zhang
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental and Resource Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, Zhejiang 310058, People's Republic of China
| | - Yuxiong Wang
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental and Resource Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, Zhejiang 310058, People's Republic of China
| | - Yue Liu
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental and Resource Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, Zhejiang 310058, People's Republic of China
| | - Ling Zhou
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental and Resource Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, Zhejiang 310058, People's Republic of China
| | - Huimin Xu
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental and Resource Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, Zhejiang 310058, People's Republic of China
| | - Zhongbiao Wu
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental and Resource Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, Zhejiang 310058, People's Republic of China
- Zhejiang Provincial Engineering Research Center of Industrial Boiler & Furnace Flue Gas Pollution Control, 866 Yuhangtang Road, Hangzhou, Zhejiang 310058, People's Republic of China
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10
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Long Y, Liu J, Chen M, Li R, Weng X, Wu Z. Catalytic destruction of chlorobenzene over K-OMS-2: Inhibition of high toxic byproducts via phosphate modification. J Environ Sci (China) 2023; 127:844-854. [PMID: 36522112 DOI: 10.1016/j.jes.2022.08.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2022] [Revised: 08/04/2022] [Accepted: 08/06/2022] [Indexed: 06/17/2023]
Abstract
In the process of catalytic destruction of chlorinated volatile organic compounds (CVOCs), the catalyst is prone to chlorine poisoning and produce polychlorinated byproducts with high toxicity and persistence, bringing great risk to atmospheric environment and human health. To solve these problems, this work applied phosphate to modify K-OMS-2 catalysts. The physicochemical properties of catalysts were determined by using X-ray powder diffraction (XRD), scanning electron microscope (SEM), X-ray photoelectron spectroscopy (XPS), hydrogen temperature programmed reduction (H2-TPR), pyridine adsorption Fourier-transform infrared (Py-IR) and water temperature programmed desorption (H2O-TPD), and chlorobenzene was selected as a model pollutant to explore the catalytic performance and byproduct inhibition function of phosphating. Experimental results revealed that 1 wt.% phosphate modification yielded the best catalytic activity for chlorobenzene destruction, with the 90% conversion (T90) at approximately 247°C. The phosphating significantly decreased the types and yields of polychlorinated byproducts in effluent. After phosphating, we observed significant hydroxyl groups on catalyst surface, and the active center was transformed into Mn(IV)-O…H, which promoted the formation of HCl, and enhanced the dechlorination process. Furthermore, the enriched Lewis acid sites by phosphating profoundly enhanced the deep oxidation ability of the catalyst, which promoted a rapid oxidation of reaction intermediates, so as to reduce byproducts generation. This study provided an effective strategy for inhibiting the toxic byproducts for the catalytic destruction of chlorinated organics.
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Affiliation(s)
- Yunpeng Long
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Jiajia Liu
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Meiling Chen
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Renna Li
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China.
| | - Xiaole Weng
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China; Zhejiang Provincial Engineering Research Center of Industrial Boiler and Furnace Flue Gas Pollution Control, Zhejiang University-Hangzhou Global Scientific and Technological Innovation Center, Hangzhou 311200, China.
| | - Zhongbiao Wu
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
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11
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Chen J, Wang C, Lv X, Huang G, Xu W, Li X, Jia H. Pt/CeO 2 coated with polyoxometallate chainmail to regulate oxidation of chlorobenzene without hazardous by-products. JOURNAL OF HAZARDOUS MATERIALS 2023; 441:129925. [PMID: 36103768 DOI: 10.1016/j.jhazmat.2022.129925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 08/22/2022] [Accepted: 09/04/2022] [Indexed: 06/15/2023]
Abstract
Doping noble metal and acid functionalization were both valid approaches to facilitate oxidation of chlorobenzene on CeO2-based catalysts, but their promotion effects were influenced by different orders of modification process. Because of strong interaction between metal and support and proper redox nature of CeO2, Pt NPs were re-dispersed into single atoms on CeO2 surface via "ex-solution". Companied with Pt loading, the enhancement of oxidizing ability led to generation of polychlorinated by-products. Herein, CeO2-supported Pt was coated by HSiW chainmail to protect Pt from being exposed to Cl-contained atmosphere, and HSiW coating promoted activation of chlorobenzene. The as-prepared chainmail catalyst of HSiW/Pt/CeO2 displayed a remarkable performance in catalyzing oxidation of chlorobenzene without any dichlorobenzene at realistic condition. By comparison, other catalysts with exposed Pt suffered from production of toxic by-products.
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Affiliation(s)
- Jin Chen
- CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; Xiamen Key Laboratory of Materials for Gaseous Pollutant Control, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chunqi Wang
- CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; Xiamen Key Laboratory of Materials for Gaseous Pollutant Control, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Xuelong Lv
- CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; Xiamen Key Laboratory of Materials for Gaseous Pollutant Control, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Guixiang Huang
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science & Technology of China, Hefei 230026, China
| | - Wenjian Xu
- CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; Xiamen Key Laboratory of Materials for Gaseous Pollutant Control, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
| | - Xiaolan Li
- CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; Xiamen Key Laboratory of Materials for Gaseous Pollutant Control, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
| | - Hongpeng Jia
- CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; Xiamen Key Laboratory of Materials for Gaseous Pollutant Control, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; University of Chinese Academy of Sciences, Beijing 100049, China.
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12
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Huang Z, Ding J, Yang X, Liu H, Song P, Guo Y, Guo Y, Wang L, Zhan W. Highly Efficient Oxidation of Propane at Low Temperature over a Pt-Based Catalyst by Optimization Support. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:17278-17287. [PMID: 36335508 DOI: 10.1021/acs.est.2c05599] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Pt-based catalysts have attracted widespread attention in environmental protection applications, especially in the catalytic destruction of light alkane pollutants. However, developing a satisfying platinum catalyst with high activity, excellent water-resistance, and practical suitability for hydrocarbon combustion at low temperature is challenging. In this study, the Pt catalyst supported on the selected Nb2O5 oxide exhibited an efficient catalytic activity in propane oxidation and exceeded that of most catalysts reported in the literature. More importantly, the Pt/Nb2O5 catalyst maintained excellent activity and durability even after high-temperature aging at 700 °C and under harsh working conditions, such as a certain degree of moisture, high space velocity, and composite pollutants. The excellent performance of the Pt/Nb2O5 catalyst was attributed to the abundant metallic Pt species stabilized on the surface of Nb2O5, which prompted the C-H bond dissociation ability as the rate-determining step. Furthermore, propane was initially activated via oxidehydrogenation and followed the acrylate species path as a more efficient propane oxidation path on the Pt/Nb2O5 surface. Overall, Pt/Nb2O5 can be considered a promising catalyst for the catalytic oxidation of alkanes from industrial sources and could provide inspiration for designing superb catalysts for the oxidation of light alkanes.
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Affiliation(s)
- Zhenpeng Huang
- Key Laboratory for Advanced Materials and Research Institute of Industrial Catalysis, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P.R. China
| | - Jiajia Ding
- Key Laboratory for Advanced Materials and Research Institute of Industrial Catalysis, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P.R. China
| | - Xinwei Yang
- Hudong Heavy Machinery Co., Ltd., Shanghai 200129, P.R. China
| | - Hao Liu
- Kailong High Technology Co., Ltd., Wuxi 214153, P.R. China
| | - Peiyao Song
- Key Laboratory for Advanced Materials and Research Institute of Industrial Catalysis, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P.R. China
| | - Yanglong Guo
- Key Laboratory for Advanced Materials and Research Institute of Industrial Catalysis, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P.R. China
| | - Yun Guo
- Key Laboratory for Advanced Materials and Research Institute of Industrial Catalysis, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P.R. China
| | - Li Wang
- Key Laboratory for Advanced Materials and Research Institute of Industrial Catalysis, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P.R. China
| | - Wangcheng Zhan
- Key Laboratory for Advanced Materials and Research Institute of Industrial Catalysis, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P.R. China
- Frontiers Science Center for Materiobiology and Dynamic Chemistry, East China University of Science and Technology, Shanghai 200237, P.R. China
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13
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Bi F, Zhao Z, Yang Y, Gao W, Liu N, Huang Y, Zhang X. Chlorine-Coordinated Pd Single Atom Enhanced the Chlorine Resistance for Volatile Organic Compound Degradation: Mechanism Study. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:17321-17330. [PMID: 36332104 DOI: 10.1021/acs.est.2c06886] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
The development of catalysts with high chlorine resistance for volatile organic compound (VOC) degradation is of great significance to achieve air purification. Herein, Pd@ZrO2 catalysts with monodispersed Pd atoms coordinated with Cl were prepared using an in situ grown Zr-based metal-organic framework (MOF) as the sacrifice templates to enhance the chlorine resistance for VOC elimination. The residual Cl species from the Zr-MOF coordinated with Pd, forming Pd1-Cl species during the pyrolysis. Meanwhile, abundant oxygen vacancies (VO) were generated, which enhanced the adsorption and activation of gaseous oxygen molecules, accelerating the degradation of VOCs. In addition, the Pd@ZrO2 catalysts exhibited satisfactory water resistance, long-term stability, and great resistance to CO and dichloromethane (DCM) for VOC elimination. In situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) results elucidated that the generation of Pd1-Cl species in Pd@ZrO2 suppressed the absorption of DCM, releasing more active sites for toluene and its intermediate adsorption. Simultaneously, the monodispersed Pd atoms and VO improved the reactivity of gaseous oxygen molecule adsorption and dissociation, boosting the deep decomposition of toluene and its intermediates. This work may provide a new strategy for rationally designing high-chlorine resistance catalysts for VOC elimination to improve the atmospheric environment.
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Affiliation(s)
- Fukun Bi
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Zhenyuan Zhao
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Yang Yang
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Weikang Gao
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Ning Liu
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Yuandong Huang
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Xiaodong Zhang
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China
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14
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Zhang H, Wang S, Wang M, Li G, Yu L, Liu X, Wang Z, Zhang C. Catalytic oxidation of vinyl chloride over Co–Ce composite oxides derived from ZIF-67 template: Effect of cerium incorporation. J RARE EARTH 2022. [DOI: 10.1016/j.jre.2022.12.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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15
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Fu K, Su Y, Zheng Y, Han R, Liu Q. Novel monolithic catalysts for VOCs removal: A review on preparation, carrier and energy supply. CHEMOSPHERE 2022; 308:136256. [PMID: 36113653 DOI: 10.1016/j.chemosphere.2022.136256] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 08/24/2022] [Accepted: 08/26/2022] [Indexed: 06/15/2023]
Abstract
Volatile organic compounds (VOCs) are considered the culprit of secondary air pollution such as ozone, secondary organic aerosols, and photochemical smog. Among various technologies, catalytic oxidation is considered a promising method for the post-treatment of VOCs. Researchers are sparing no effort to develop novel catalysts to meet the requirements of the catalytic process. Compared with the powdered or granular catalysts, the monolithic catalysts have the advantages of low pressure drop, high utilization of active phases, and excellent mechanical properties. This review summarized the new design of monolithic catalysts (including new preparation methods, new supports, and new energy supply methods) for the post-treatment of VOCs. It addressed the advantages of the new designs in detail, and the scope of applicability for each new monolithic catalyst was also highlighted. Finally, the highly required future development trends of monolithic catalysts for VOCs catalytic oxidation are recommended. We expect this work can inspire and guide researchers from both academic and industrial communities, and help pave the way for breakthroughs in fundamental research and industrial applications in this field.
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Affiliation(s)
- Kaixuan Fu
- Tianjin Key Lab of Indoor Air Environmental Quality Control, School of Environmental Science and Technology, Tianjin University, Tianjin, 300350, China; State Key Laboratory of Engines, School of Mechanical Engineering, Tianjin University, Tianjin, 300350, China
| | - Yun Su
- Tianjin Key Lab of Indoor Air Environmental Quality Control, School of Environmental Science and Technology, Tianjin University, Tianjin, 300350, China; State Key Laboratory of Engines, School of Mechanical Engineering, Tianjin University, Tianjin, 300350, China
| | - Yanfei Zheng
- Tianjin Key Lab of Indoor Air Environmental Quality Control, School of Environmental Science and Technology, Tianjin University, Tianjin, 300350, China; State Key Laboratory of Engines, School of Mechanical Engineering, Tianjin University, Tianjin, 300350, China
| | - Rui Han
- Tianjin Key Lab of Indoor Air Environmental Quality Control, School of Environmental Science and Technology, Tianjin University, Tianjin, 300350, China; State Key Laboratory of Engines, School of Mechanical Engineering, Tianjin University, Tianjin, 300350, China.
| | - Qingling Liu
- Tianjin Key Lab of Indoor Air Environmental Quality Control, School of Environmental Science and Technology, Tianjin University, Tianjin, 300350, China; State Key Laboratory of Engines, School of Mechanical Engineering, Tianjin University, Tianjin, 300350, China.
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16
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Chai S, Li S, Zhang L, Fan G, Nie L, Zhou X, Yang W, Li W, Chen Y. Abatement of dichloromethane with high selectivity over defect-rich MOF-derived Ru/TiO 2 catalysts. NANOSCALE 2022; 14:15724-15734. [PMID: 36194173 DOI: 10.1039/d2nr04261d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
The regulation of oxygen vacancies and Ru species using metal-organic frameworks was synergically adopted in a rational design to upgrade Ru/TiO2 catalysts, which are highly active for the catalytic oxidation of dichloromethane (DCM) with less undesired byproducts. In this work, Ru/M-TiO2 and Ru/N-TiO2 catalysts were synthesized by the pyrolysis of MIL-125 and NH2-MIL-125 incorporated with Ru, the existence of Ru nanoclusters and nanoparticles was detected by XAFS, respectively, and the catalytic performance was analyzed comprehensively. Complete oxidation of DCM was obtained at ∼290 °C over Ru/M-TiO2 and Ru/N-TiO2 catalysts, while Ru/N-TiO2 showed quite less monochloromethane (MCM) and higher CO2 yields, and better dechlorination capacity in oxidation. The distinction comes down to that the easier desorption of chlorine could be achieved over Ru4+ which act as the main activated adsorption sites for DCM in Ru/N-TiO2, compared to oxygen vacancies that serve as the main dissociation sites in Ru/M-TiO2. Additionally, Ru/N-TiO2 exhibited superior stability and excellent resilience in moisture. An in situ DRIFTS experiment further indicated the different DCM catalytic degradation process as well as the reaction mechanism over the as-prepared catalysts.
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Affiliation(s)
- Shaohua Chai
- State Key Laboratory of Multi-phase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China.
- College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China
| | - Shuangde Li
- State Key Laboratory of Multi-phase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China.
| | - Le Zhang
- State Key Laboratory of Multi-phase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China.
- College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China
| | - Guijun Fan
- State Key Laboratory of Multi-phase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China.
- College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China
| | - Linfeng Nie
- State Key Laboratory of Multi-phase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China.
| | - Xin Zhou
- State Key Laboratory of Multi-phase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China.
- College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China
| | - Wuxinchen Yang
- State Key Laboratory of Multi-phase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China.
- College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China
| | - Weiman Li
- State Key Laboratory of Multi-phase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China.
| | - Yunfa Chen
- State Key Laboratory of Multi-phase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China.
- College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China
- CAS Center for Excellence in Urban Atmospheric Environment, Xiamen 361021, China
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17
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Li X, Chen Y, Chen Z, Guo H, Yang S, Ma X. The recent progress on gaseous chlorinated aromatics removal for environmental applications. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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18
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Zhang Q, Zhou Z, Fang T, Gu H, Guo Y, Zhan W, Guo Y, Wang L. Understanding the role of tungsten on Pt/CeO2 for vinyl chloride catalytic combustion. J RARE EARTH 2022. [DOI: 10.1016/j.jre.2021.09.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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19
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Yu X, Deng J, Liu Y, Jing L, Gao R, Hou Z, Zhang Z, Dai H. Enhanced Water Resistance and Catalytic Performance of Ru/TiO 2 by Regulating Brønsted Acid and Oxygen Vacancy for the Oxidative Removal of 1,2-Dichloroethane and Toluene. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:11739-11749. [PMID: 35880312 DOI: 10.1021/acs.est.2c03336] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The compositions of volatile organic compounds (VOCs) under actual industrial conditions are often complex; especially, the interaction of intermediate products easily leads to more toxic emissions that are harmful to the atmospheric environment and human health. Herein, we report a comparative investigation on 1,2-dichloroethane (1,2-DCE) and (1,2-DCE + toluene) oxidation over the Ru/TiO2, phosphotungstic acid (HPW)-modified Ru/TiO2, and oxygen vacancy-rich Ru/TiOx catalysts. The doping of HPW successfully introduced the 1,2-DCE adsorption sites to promote its oxidation and exhibited outstanding water resistance. For the mixed VOCs, Ru/HPW-TiO2 promoted the preferential and superfluous adsorption of toluene and resulted in the inhibition of 1,2-DCE degradation. Therefore, HPW modification is a successful strategy in catalytic 1,2-DCE oxidation, but Brønsted acid sites tend to adsorb toluene in the mixed VOC oxidation. The Ru/TiOx catalyst exhibited excellent activity and stability in the oxidation of mixed VOCs and could inhibit the generation of byproducts and Cl2 compared with the Ru/HPW-TiO2 catalyst. Compared with the Brønsted acid modification, the oxygen vacancy-rich catalysts are significantly suitable for the oxidation of multicomponent VOCs.
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Affiliation(s)
- Xiaohui Yu
- Beijing Key Laboratory for Green Catalysis and Separation, Key Laboratory of Beijing on Regional Air Pollution Control, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Laboratory of Catalysis Chemistry and Nanoscience, Department of Environmental Chemical Engineering, College of Environmental and Chemical Engineering, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China
| | - Jiguang Deng
- Beijing Key Laboratory for Green Catalysis and Separation, Key Laboratory of Beijing on Regional Air Pollution Control, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Laboratory of Catalysis Chemistry and Nanoscience, Department of Environmental Chemical Engineering, College of Environmental and Chemical Engineering, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China
| | - Yuxi Liu
- Beijing Key Laboratory for Green Catalysis and Separation, Key Laboratory of Beijing on Regional Air Pollution Control, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Laboratory of Catalysis Chemistry and Nanoscience, Department of Environmental Chemical Engineering, College of Environmental and Chemical Engineering, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China
| | - Lin Jing
- Beijing Key Laboratory for Green Catalysis and Separation, Key Laboratory of Beijing on Regional Air Pollution Control, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Laboratory of Catalysis Chemistry and Nanoscience, Department of Environmental Chemical Engineering, College of Environmental and Chemical Engineering, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China
| | - Ruyi Gao
- Beijing Key Laboratory for Green Catalysis and Separation, Key Laboratory of Beijing on Regional Air Pollution Control, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Laboratory of Catalysis Chemistry and Nanoscience, Department of Environmental Chemical Engineering, College of Environmental and Chemical Engineering, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China
| | - Zhiquan Hou
- Beijing Key Laboratory for Green Catalysis and Separation, Key Laboratory of Beijing on Regional Air Pollution Control, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Laboratory of Catalysis Chemistry and Nanoscience, Department of Environmental Chemical Engineering, College of Environmental and Chemical Engineering, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China
| | - Zexu Zhang
- Beijing Key Laboratory for Green Catalysis and Separation, Key Laboratory of Beijing on Regional Air Pollution Control, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Laboratory of Catalysis Chemistry and Nanoscience, Department of Environmental Chemical Engineering, College of Environmental and Chemical Engineering, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China
| | - Hongxing Dai
- Beijing Key Laboratory for Green Catalysis and Separation, Key Laboratory of Beijing on Regional Air Pollution Control, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Laboratory of Catalysis Chemistry and Nanoscience, Department of Environmental Chemical Engineering, College of Environmental and Chemical Engineering, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China
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20
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Wang Z, Zhu J, Zu X, Wu Y, Shang S, Ling P, Qiao P, Liu C, Hu J, Pan Y, Zhu J, Sun Y, Xie Y. Selective CO
2
Photoreduction to CH
4
via Pd
δ
+
‐Assisted Hydrodeoxygenation over CeO
2
Nanosheets. Angew Chem Int Ed Engl 2022; 61:e202203249. [DOI: 10.1002/anie.202203249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Indexed: 11/10/2022]
Affiliation(s)
- Zhiqiang Wang
- Hefei National Research Center for Physical Science at Microscale National Synchrotron Radiation Laboratory University of Science and Technology of China Hefei 230026 P. R. China
| | - Juncheng Zhu
- Hefei National Research Center for Physical Science at Microscale National Synchrotron Radiation Laboratory University of Science and Technology of China Hefei 230026 P. R. China
| | - Xiaolong Zu
- Hefei National Research Center for Physical Science at Microscale National Synchrotron Radiation Laboratory University of Science and Technology of China Hefei 230026 P. R. China
| | - Yang Wu
- Hefei National Research Center for Physical Science at Microscale National Synchrotron Radiation Laboratory University of Science and Technology of China Hefei 230026 P. R. China
| | - Shu Shang
- Hefei National Research Center for Physical Science at Microscale National Synchrotron Radiation Laboratory University of Science and Technology of China Hefei 230026 P. R. China
| | - Peiquan Ling
- Hefei National Research Center for Physical Science at Microscale National Synchrotron Radiation Laboratory University of Science and Technology of China Hefei 230026 P. R. China
| | - Panzhe Qiao
- Shanghai Synchrotron Radiation Facility Shanghai Advanced Research Institute Chinese Academy of Sciences Shanghai 201204 P. R. China
| | - Chengyuan Liu
- Hefei National Research Center for Physical Science at Microscale National Synchrotron Radiation Laboratory University of Science and Technology of China Hefei 230026 P. R. China
| | - Jun Hu
- Hefei National Research Center for Physical Science at Microscale National Synchrotron Radiation Laboratory University of Science and Technology of China Hefei 230026 P. R. China
| | - Yang Pan
- Hefei National Research Center for Physical Science at Microscale National Synchrotron Radiation Laboratory University of Science and Technology of China Hefei 230026 P. R. China
| | - Junfa Zhu
- Hefei National Research Center for Physical Science at Microscale National Synchrotron Radiation Laboratory University of Science and Technology of China Hefei 230026 P. R. China
| | - Yongfu Sun
- Hefei National Research Center for Physical Science at Microscale National Synchrotron Radiation Laboratory University of Science and Technology of China Hefei 230026 P. R. China
- Institute of Energy Hefei Comprehensive National Science Center Hefei 230031 China
| | - Yi Xie
- Hefei National Research Center for Physical Science at Microscale National Synchrotron Radiation Laboratory University of Science and Technology of China Hefei 230026 P. R. China
- Institute of Energy Hefei Comprehensive National Science Center Hefei 230031 China
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21
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Chen W, Yang S, Liu H, Huang F, Shao Q, Liu L, Sun J, Sun C, Chen D, Dong L. Single-Atom Ce-Modified α-Fe 2O 3 for Selective Catalytic Reduction of NO with NH 3. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:10442-10453. [PMID: 35749227 DOI: 10.1021/acs.est.2c02916] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
A single-atom Ce-modified α-Fe2O3 catalyst (Fe0.93Ce0.07Ox catalyst with 7% atomic percentage of Ce) was synthesized by a citric acid-assisted sol-gel method, which exhibited excellent performance for selective catalytic reduction of NOx with NH3 (NH3-SCR) over a wide operating temperature window. Remarkably, it maintained ∼93% NO conversion efficiency for 168 h in the presence of 200 ppm SO2 and 5 vol % H2O at 250 °C. The structural characterizations suggested that the introduction of Ce leads to the generation of local Fe-O-Ce sites in the FeOx matrix. Furthermore, it is critical to maintain the atomic dispersion of the Ce species to maximize the amounts of Fe-O-Ce sites in the Ce-doped FeOx catalyst. The formation of CeO2 nanoparticles due to a high doping amount of Ce species leads to a decline in catalytic performance, indicating a size-dependent catalytic behavior. Density functional theory (DFT) calculation results indicate that the formation of oxygen vacancies in the Fe-O-Ce sites is more favorable than that in the Fe-O-Fe sites in the Ce-free α-Fe2O3 catalyst. The Fe-O-Ce sites can promote the oxidation of NO to NO2 on the Fe0.93Ce0.07Ox catalyst and further facilitate the reduction of NOx by NH3. In addition, the decomposition of NH4HSO4 can occur at lower temperatures on the Fe0.93Ce0.07Ox catalyst containing atomically dispersed Ce species than on the α-Fe2O3 reference catalyst, resulting in the good SO2/H2O resistance ability in the NH3-SCR reaction.
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Affiliation(s)
- Wei Chen
- Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, College of Chemistry, Chemical Engineering and Materials Science, Institute of Materials and Clean Energy, Shandong Normal University, Jinan 250014, P. R. China
| | - Shan Yang
- Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, College of Chemistry, Chemical Engineering and Materials Science, Institute of Materials and Clean Energy, Shandong Normal University, Jinan 250014, P. R. China
| | - Hao Liu
- Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, College of Chemistry, Chemical Engineering and Materials Science, Institute of Materials and Clean Energy, Shandong Normal University, Jinan 250014, P. R. China
| | - Fang Huang
- Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, College of Chemistry, Chemical Engineering and Materials Science, Institute of Materials and Clean Energy, Shandong Normal University, Jinan 250014, P. R. China
| | - Qinghao Shao
- Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, College of Chemistry, Chemical Engineering and Materials Science, Institute of Materials and Clean Energy, Shandong Normal University, Jinan 250014, P. R. China
| | - Lichen Liu
- Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China
| | - Jingfang Sun
- Jiangsu Key Laboratory of Vehicle Emissions Control, School of the Environment, Nanjing University, Nanjing 210093, P. R. China
| | - Chuanzhi Sun
- Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, College of Chemistry, Chemical Engineering and Materials Science, Institute of Materials and Clean Energy, Shandong Normal University, Jinan 250014, P. R. China
| | - Dezhan Chen
- Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, College of Chemistry, Chemical Engineering and Materials Science, Institute of Materials and Clean Energy, Shandong Normal University, Jinan 250014, P. R. China
| | - Lin Dong
- Jiangsu Key Laboratory of Vehicle Emissions Control, School of the Environment, Nanjing University, Nanjing 210093, P. R. China
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22
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Su Y, Fu K, Pang C, Zheng Y, Song C, Ji N, Ma D, Lu X, Liu C, Han R, Liu Q. Recent Advances of Chlorinated Volatile Organic Compounds' Oxidation Catalyzed by Multiple Catalysts: Reasonable Adjustment of Acidity and Redox Properties. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:9854-9871. [PMID: 35635373 DOI: 10.1021/acs.est.2c01420] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The severe hazard of chlorinated volatile organic compounds (CVOCs) to human health and the natural environment makes their abatement technology a key topic of global environmental research. Due to the existence of Cl, the byproducts of CVOCs in the catalytic combustion process are complex and toxic, and the possible generation of dioxin becomes a potential risk to the environment. Well-qualified CVOC catalysts should process favorable low-temperature catalytic oxidation ability, excellent selectivity, and good resistance to poisoning, which are governed by the reasonable adjustment of acidity and redox properties. This review overviews the application of different types of multicomponent catalysts, that is, supported noble metal catalysts, transition metal oxide/zeolite catalysts, composite transition metal oxide catalysts, and acid-modified catalysts, for CVOC degradation from the perspective of balance between acidity and redox properties. This review also highlights the synergistic degradation of CVOCs and NOx from the perspective of acidity and redox properties. We expect this work to inspire and guide researchers from both the academic and industrial communities and help pave the way for breakthroughs in fundamental research and industrial applications in this field.
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Affiliation(s)
- Yun Su
- Tianjin Key Lab of Indoor Air Environmental Quality Control, School of Environmental Science and Technology, Tianjin University, Tianjin 300350, China
- State Key Laboratory of Engines, School of Mechanical Engineering, Tianjin University, Tianjin 300350, China
| | - Kaixuan Fu
- Tianjin Key Lab of Indoor Air Environmental Quality Control, School of Environmental Science and Technology, Tianjin University, Tianjin 300350, China
- State Key Laboratory of Engines, School of Mechanical Engineering, Tianjin University, Tianjin 300350, China
| | - Caihong Pang
- Tianjin Key Lab of Indoor Air Environmental Quality Control, School of Environmental Science and Technology, Tianjin University, Tianjin 300350, China
- State Key Laboratory of Engines, School of Mechanical Engineering, Tianjin University, Tianjin 300350, China
| | - Yanfei Zheng
- Tianjin Key Lab of Indoor Air Environmental Quality Control, School of Environmental Science and Technology, Tianjin University, Tianjin 300350, China
- State Key Laboratory of Engines, School of Mechanical Engineering, Tianjin University, Tianjin 300350, China
| | - Chunfeng Song
- Tianjin Key Lab of Indoor Air Environmental Quality Control, School of Environmental Science and Technology, Tianjin University, Tianjin 300350, China
- State Key Laboratory of Engines, School of Mechanical Engineering, Tianjin University, Tianjin 300350, China
| | - Na Ji
- Tianjin Key Lab of Indoor Air Environmental Quality Control, School of Environmental Science and Technology, Tianjin University, Tianjin 300350, China
- State Key Laboratory of Engines, School of Mechanical Engineering, Tianjin University, Tianjin 300350, China
| | - Degang Ma
- Tianjin Key Lab of Indoor Air Environmental Quality Control, School of Environmental Science and Technology, Tianjin University, Tianjin 300350, China
- State Key Laboratory of Engines, School of Mechanical Engineering, Tianjin University, Tianjin 300350, China
| | - Xuebin Lu
- Tianjin Key Lab of Indoor Air Environmental Quality Control, School of Environmental Science and Technology, Tianjin University, Tianjin 300350, China
- State Key Laboratory of Engines, School of Mechanical Engineering, Tianjin University, Tianjin 300350, China
| | - Caixia Liu
- Tianjin Key Lab of Indoor Air Environmental Quality Control, School of Environmental Science and Technology, Tianjin University, Tianjin 300350, China
- State Key Laboratory of Engines, School of Mechanical Engineering, Tianjin University, Tianjin 300350, China
| | - Rui Han
- Tianjin Key Lab of Indoor Air Environmental Quality Control, School of Environmental Science and Technology, Tianjin University, Tianjin 300350, China
- State Key Laboratory of Engines, School of Mechanical Engineering, Tianjin University, Tianjin 300350, China
| | - Qingling Liu
- Tianjin Key Lab of Indoor Air Environmental Quality Control, School of Environmental Science and Technology, Tianjin University, Tianjin 300350, China
- State Key Laboratory of Engines, School of Mechanical Engineering, Tianjin University, Tianjin 300350, China
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23
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Gao R, Zhang M, Liu Y, Xie S, Deng J, Ke X, Jing L, Hou Z, Zhang X, Liu F, Dai H. Engineering Platinum Catalysts via a Site-Isolation Strategy with Enhanced Chlorine Resistance for the Elimination of Multicomponent VOCs. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:9672-9682. [PMID: 35728271 DOI: 10.1021/acs.est.2c00437] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Pt-based catalysts can be poisoned by the chlorine formed during the oxidation of multicomponent volatile organic compounds (VOCs) containing chlorinated VOCs. Improving the low-temperature chlorine resistance of catalysts is important for industrial applications, although it is yet challenging. We hereby demonstrate the essential catalytic roles of a bifunctional catalyst with an atomic-scale metal/oxide interface constructed by an intermetallic compound nanocrystal. Introducing trichloroethylene (TCE) exhibits a less negative effect on the catalytic activity of the bimetallic catalyst for o-xylene oxidation, and the partial deactivation caused by TCE addition is reversible, suggesting that the bimetallic, HCl-etched Pt3Sn(E)/CeO2 catalyst possesses much stronger chlorine resistance than the conventional Pt/CeO2 catalyst. On the site-isolated Pt-Sn catalyst, the presence of aromatic hydrocarbon significantly inhibits the adsorption strength of TCE, resulting in excellent catalytic stability in the oxidation of the VOC mixture. Furthermore, the large amount of surface-adsorbed oxygen species generated on the electronegative Pt is highly effective for low-temperature C-Cl bond dissociation. The adjacent promoter (Sn-O) possesses the functionality of acid sites to provide sufficient protons for HCl formation over the bifunctional catalyst, which is considered critical to maintaining the reactivity of Pt by removing Cl and decreasing the polychlorinated byproducts.
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Affiliation(s)
- Ruyi Gao
- Beijing Key Laboratory for Green Catalysis and Separation, Key Laboratory of Beijing on Regional Air Pollution Control, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Department of Environmental Chemical Engineering, Beijing University of Technology, Beijing 100124, China
| | - Manchen Zhang
- Beijing Key Laboratory of Microstructure and Properties of Solids, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, China
| | - Yuxi Liu
- Beijing Key Laboratory for Green Catalysis and Separation, Key Laboratory of Beijing on Regional Air Pollution Control, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Department of Environmental Chemical Engineering, Beijing University of Technology, Beijing 100124, China
| | - Shaohua Xie
- Department of Civil, Environmental, and Construction Engineering, Catalysis Cluster for Renewable Energy and Chemical Transformations (REACT), NanoScience Technology Center (NSTC), University of Central Florida, Orlando, Florida 32816, United States
| | - Jiguang Deng
- Beijing Key Laboratory for Green Catalysis and Separation, Key Laboratory of Beijing on Regional Air Pollution Control, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Department of Environmental Chemical Engineering, Beijing University of Technology, Beijing 100124, China
| | - Xiaoxing Ke
- Department of Civil, Environmental, and Construction Engineering, Catalysis Cluster for Renewable Energy and Chemical Transformations (REACT), NanoScience Technology Center (NSTC), University of Central Florida, Orlando, Florida 32816, United States
| | - Lin Jing
- Beijing Key Laboratory for Green Catalysis and Separation, Key Laboratory of Beijing on Regional Air Pollution Control, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Department of Environmental Chemical Engineering, Beijing University of Technology, Beijing 100124, China
| | - Zhiquan Hou
- Beijing Key Laboratory for Green Catalysis and Separation, Key Laboratory of Beijing on Regional Air Pollution Control, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Department of Environmental Chemical Engineering, Beijing University of Technology, Beijing 100124, China
| | - Xing Zhang
- Department of Civil, Environmental, and Construction Engineering, Catalysis Cluster for Renewable Energy and Chemical Transformations (REACT), NanoScience Technology Center (NSTC), University of Central Florida, Orlando, Florida 32816, United States
| | - Fudong Liu
- Department of Civil, Environmental, and Construction Engineering, Catalysis Cluster for Renewable Energy and Chemical Transformations (REACT), NanoScience Technology Center (NSTC), University of Central Florida, Orlando, Florida 32816, United States
| | - Hongxing Dai
- Beijing Key Laboratory for Green Catalysis and Separation, Key Laboratory of Beijing on Regional Air Pollution Control, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Department of Environmental Chemical Engineering, Beijing University of Technology, Beijing 100124, China
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24
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Huang Z, Cao S, Yu J, Tang X, Guo Y, Guo Y, Wang L, Dai S, Zhan W. Total Oxidation of Light Alkane over Phosphate-Modified Pt/CeO 2 Catalysts. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:9661-9671. [PMID: 35695747 DOI: 10.1021/acs.est.2c00135] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Developing efficient catalysts for the total oxidation of light alkane at low temperatures is challenging. In this study, superior catalytic performance in the total oxidation of light alkane was achieved by modulating the acidity and redox property of a Pt/CeO2 catalyst through phosphorus modification. Surface modification with phosphorus resulted in electron withdrawal from Pt, leading to platinum species with high valency and the generation of Brönsted acid sites, leading to increased acidity of the Pt/CeO2 catalyst. Consequently, the ability of the Pt/CeO2 catalyst to activate the C-H bond increased with increasing P content in the catalyst owing to the synergistic effect of Ptδ+-(CeO2-POx)δ- dipolar catalytic sites. In contrast, the redox property of the Pt/CeO2 catalyst weakened at first; subsequently, it was partially restored owing to the recovery of a part of the bare ceria surface with increasing P content. The turnover frequency in propane oxidation over the phosphate-modified Pt/CeO2 catalyst with a P/Ce atomic ratio of 0.06 was 10-fold higher than that over the unmodified Pt/CeO2 catalyst at 220 °C. This comprehensive study not only sheds light on the mechanism underlying the surface modification process but also offers a strategy for realizing higher catalytic activity in the total oxidation of light alkanes.
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Affiliation(s)
- Zhenpeng Huang
- Key Laboratory for Advanced Materials and Research Institute of Industrial Catalysis, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Shiying Cao
- Key Laboratory for Advanced Materials and Research Institute of Industrial Catalysis, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Jihang Yu
- Key Laboratory for Advanced Materials and Research Institute of Industrial Catalysis, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Xuan Tang
- Key Laboratory for Advanced Materials and Research Institute of Industrial Catalysis, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
- Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Centre, Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Yanglong Guo
- Key Laboratory for Advanced Materials and Research Institute of Industrial Catalysis, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Yun Guo
- Key Laboratory for Advanced Materials and Research Institute of Industrial Catalysis, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Li Wang
- Key Laboratory for Advanced Materials and Research Institute of Industrial Catalysis, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Sheng Dai
- Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Centre, Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
- Frontiers Science Center for Materiobiology and Dynamic Chemistry, East China University of Science and Technology, Shanghai 200237, PR China
| | - Wangcheng Zhan
- Key Laboratory for Advanced Materials and Research Institute of Industrial Catalysis, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
- Frontiers Science Center for Materiobiology and Dynamic Chemistry, East China University of Science and Technology, Shanghai 200237, PR China
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25
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Sun Y, Wang Z, Zhu J, Zu X, Wu Y, Shang S, Ling P, Qiao P, Liu C, Hu J, Pan Y, Zhu J, Xie Y. Selective CO2 Photoreduction to CH4 via Pdᵟ+‐assisted Hydrodeoxygenation over CeO2 Nanosheets. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202203249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yongfu Sun
- University of Science & Technology of China Hefei National Laboratory for Physical Sciences at Microscale No.96, JinZhai Road Baohe District 230026 Hefei CHINA
| | - Zhiqiang Wang
- University of Science and Technology of China hefei national laboratory for physical science at microscale CHINA
| | - Juncheng Zhu
- University of Science and Technology of China hefei national laboratory for physical science at microscale CHINA
| | - Xiaolong Zu
- University of Science and Technology of China hefei national laboratory for physical science at microscale CHINA
| | - Yang Wu
- University of Science and Technology of China hefei national laboratory for physical science at microscale CHINA
| | - Shu Shang
- University of Science and Technology of China hefei national laboratory for physical science at microscale CHINA
| | - Peiquan Ling
- University of Science and Technology of China hefei national laboratory for physical science at microscale CHINA
| | - Panzhe Qiao
- Chinese Academy of Sciences shaihai synchrotron radiation CHINA
| | - Chengyuan Liu
- University of Science and Technology of China hefei national laboratory for physical science at microscale CHINA
| | - Jun Hu
- University of Science and Technology of China hefei national laboratory for physical science at microscale CHINA
| | - Yang Pan
- University of Science and Technology of China national synchrotron radiation laboratory CHINA
| | - Junfa Zhu
- University of Science and Technology of China hefei national laboratory for physical science at microscale CHINA
| | - Yi Xie
- University of Science and Technology of China hefei national laboratory for physical science at microscale CHINA
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26
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Deng J, Xue F, Huo C, Zhao Y, Li L, Liu Q, Cui M, Qiao X, Fei Z. Al‐modified Mesoporous SiO
2
‐matrix‐supported Uniform CeO
2
Nanodots with Superior Catalytic Efficiency in DCE Combustion. ChemistrySelect 2022. [DOI: 10.1002/slct.202200708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jianwei Deng
- State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical Engineering Nanjing Tech University NO. 30 Puzhunan Road(S) Nanjing 211816 PR China
| | - Fan Xue
- State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical Engineering Nanjing Tech University NO. 30 Puzhunan Road(S) Nanjing 211816 PR China
| | - Can Huo
- State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical Engineering Nanjing Tech University NO. 30 Puzhunan Road(S) Nanjing 211816 PR China
| | - Yuanbiao Zhao
- State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical Engineering Nanjing Tech University NO. 30 Puzhunan Road(S) Nanjing 211816 PR China
| | - Lei Li
- State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical Engineering Nanjing Tech University NO. 30 Puzhunan Road(S) Nanjing 211816 PR China
| | - Qing Liu
- State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical Engineering Nanjing Tech University NO. 30 Puzhunan Road(S) Nanjing 211816 PR China
| | - Mifen Cui
- State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical Engineering Nanjing Tech University NO. 30 Puzhunan Road(S) Nanjing 211816 PR China
| | - Xu Qiao
- State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical Engineering Nanjing Tech University NO. 30 Puzhunan Road(S) Nanjing 211816 PR China
| | - Zhaoyang Fei
- State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical Engineering Nanjing Tech University NO. 30 Puzhunan Road(S) Nanjing 211816 PR China
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27
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Sun Y, Xu S, Bai B, Li L, Kang Y, Hu X, Liao Z, He C. Biotemplate Fabrication of Hollow Tubular Ce xSr 1-xTiO 3 with Regulable Surface Acidity and Oxygen Mobility for Efficient Destruction of Chlorobenzene: Intrinsic Synergy Effect and Reaction Mechanism. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:5796-5807. [PMID: 35321543 DOI: 10.1021/acs.est.2c00270] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Developing economic and applicable catalysts with elegant chlorine resistance and organic byproduct inhibition capability is of great significance for chlorinated volatile organic compounds (Cl-VOCs) eco-friendly purification. Here, ternary CexSr1-xTiO3 catalysts with tunable surface acidity and oxygen species mobility were creatively fabricated using the hollow tubular-structured fruit hair of Platanus (FHP; a widespread greenery waste) as the scaffolding biotemplate. It is shown that the oxygen vacancy (Ov) triggered by the presence of Ce can optimize the synergy between the Lewis acid sites (LAS) and Brønsted acid sites (BAS). High concentration of Ov and BAS promotes the C-Cl cleavage of chlorobenzene (CB) and accelerates the desorption of Cl• radicals as inorganic chlorine. Simultaneously, the strong electron transfer within Ti-Ce-Sr linkage increases the acidity of LAS, resulting in the superior reducibility of Ce0.4Sr0.6TiO3 and facilitating the deep oxidation of dechlorination intermediates. Additionally, the spatial confinement of the tubular structure remarkably accelerates the CB flow rate and reduces the residence time of byproducts over the prepared catalysts. Owing to these, CB can be efficiently destructed over Ce0.4Sr0.6TiO3 with selectivity of CO2 and inorganic chlorine dramatically enhanced, respectively, approximately 16 and 21 times at 275 °C compared to those of pure SrTiO3. The present work provides a feasible and promising strategy for engineering efficient catalysts for heterogeneous thermocatalytic reactions for industrial-scale Cl-CVOC destruction.
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Affiliation(s)
- Yukun Sun
- Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region, Ministry of Education, School of Water and Environment, Chang'an University, Xi'an 710064, P. R. China
- State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, Shaanxi, P. R. China
| | - Shuai Xu
- Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region, Ministry of Education, School of Water and Environment, Chang'an University, Xi'an 710064, P. R. China
| | - Bo Bai
- Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region, Ministry of Education, School of Water and Environment, Chang'an University, Xi'an 710064, P. R. China
| | - Lu Li
- Center of Nanomaterials for Renewable Energy, State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, Shaanxi, P. R. China
| | - Yu Kang
- Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region, Ministry of Education, School of Water and Environment, Chang'an University, Xi'an 710064, P. R. China
| | - Xingquan Hu
- Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region, Ministry of Education, School of Water and Environment, Chang'an University, Xi'an 710064, P. R. China
| | - Zehuihuang Liao
- Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region, Ministry of Education, School of Water and Environment, Chang'an University, Xi'an 710064, P. R. China
| | - Chi He
- State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, Shaanxi, P. R. China
- National Engineering Laboratory for VOCs Pollution Control Material & Technology, University of Chinese Academy of Sciences, Beijing 101408, P. R. China
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28
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Soltan WB, Sun J, Wang W, Song Z, Zhao X, Mao Y, Zhang Z. Discovering the key role of MnO 2 and CeO 2 particles in the Fe 2O 3 catalysts for enhancing the catalytic oxidation of VOC: Synergistic effect of the lattice oxygen species and surface-adsorbed oxygen. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 819:152844. [PMID: 35038514 DOI: 10.1016/j.scitotenv.2021.152844] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 12/08/2021] [Accepted: 12/28/2021] [Indexed: 06/14/2023]
Abstract
Highly active mesoporous Fe-Mn-Ce catalysts with high specific surface area (SBET) were synthesized by a modified precipitation process for catalyzing toluene oxidation. The Fe0.85Mn0.1Ce0.05 catalyst presents richer surface oxygen species (OS), a higher proportion of Mn4+ and Ce4+, a higher concentration of lattice defects and oxygen vacancies, the highest Oads/Olatt ratio, and a superior low-temperature redox property compared with the Fe-Mn binary oxide and Fe2O3 and MnO2 catalysts. The properties contribute to a high catalytic activity to achieve T90% of toluene conversion at 264 °C and 185 °C with a gas hourly space velocity (GHSV) at 180,000 and 20,000 mL/(g∙h), respectively. The introduction of a slight quantity of Ce and Mn onto the Fe2O3 catalyst is the key to enhancing the synergistic effect of the lattice OS and surface-adsorbed oxygen, contributing to the activation oxidation procedure of toluene. In-situ DRIFTS analysis reveals that the rich oxygen vacancy concentration of catalysts accelerates the key steps for the generation and activation of oxidized products. These catalysts with rich oxygen vacancies can efficiently diminish the accumulation of a small number of the intermediary species (phenolate, C6H5-OH) produced during the catalytic oxidation of toluene.
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Affiliation(s)
- Wissem Ben Soltan
- National Engineering Laboratory for Reducing Emissions from Coal Combustion, Engineering Research Center of Environmental Thermal Technology of Ministry of Education, Shandong Key Laboratory of Energy Carbon Reduction and Resource Utilization, School of Energy and Power Engineering, Shandong University, Jinan, Shandong 250061, China
| | - Jing Sun
- National Engineering Laboratory for Reducing Emissions from Coal Combustion, Engineering Research Center of Environmental Thermal Technology of Ministry of Education, Shandong Key Laboratory of Energy Carbon Reduction and Resource Utilization, School of Energy and Power Engineering, Shandong University, Jinan, Shandong 250061, China.
| | - Wenlong Wang
- National Engineering Laboratory for Reducing Emissions from Coal Combustion, Engineering Research Center of Environmental Thermal Technology of Ministry of Education, Shandong Key Laboratory of Energy Carbon Reduction and Resource Utilization, School of Energy and Power Engineering, Shandong University, Jinan, Shandong 250061, China.
| | - Zhanlong Song
- National Engineering Laboratory for Reducing Emissions from Coal Combustion, Engineering Research Center of Environmental Thermal Technology of Ministry of Education, Shandong Key Laboratory of Energy Carbon Reduction and Resource Utilization, School of Energy and Power Engineering, Shandong University, Jinan, Shandong 250061, China
| | - Xiqiang Zhao
- National Engineering Laboratory for Reducing Emissions from Coal Combustion, Engineering Research Center of Environmental Thermal Technology of Ministry of Education, Shandong Key Laboratory of Energy Carbon Reduction and Resource Utilization, School of Energy and Power Engineering, Shandong University, Jinan, Shandong 250061, China
| | - Yanpeng Mao
- National Engineering Laboratory for Reducing Emissions from Coal Combustion, Engineering Research Center of Environmental Thermal Technology of Ministry of Education, Shandong Key Laboratory of Energy Carbon Reduction and Resource Utilization, School of Energy and Power Engineering, Shandong University, Jinan, Shandong 250061, China
| | - Zhichao Zhang
- Shandong Huanwo Environmental Protection Technology Co., ltd., Binzhou, Shandong 251800, China
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29
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Truttmann V, Drexler H, Stöger-Pollach M, Kawawaki T, Negishi Y, Barrabes N, Rupprechter G. CeO2 Supported Gold Nanocluster Catalysts for CO oxidation: Surface Evolution Influenced by the Ligand Shell. ChemCatChem 2022; 14:e202200322. [PMID: 36035519 PMCID: PMC9400996 DOI: 10.1002/cctc.202200322] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 04/07/2022] [Indexed: 11/15/2022]
Abstract
Monolayer protected Au nanocluster catalysts are known to undergo structural changes during catalytic reactions, including dissociation and migration of ligands onto the support, which strongly affects their activity and stability. To better understand how the nature of ligands influences the catalytic activity of such catalysts, three types of ceria supported Au nanoclusters with different kinds of ligands (thiolates, phosphines and a mixture thereof) have been studied, employing CO oxidation as model reaction. The thiolate‐protected Au25/CeO2 showed significantly higher CO conversion after activation at 250 °C than the cluster catalysts possessing phosphine ligands. Temperature programmed oxidation and in situ infrared spectroscopy revealed that while the phosphine ligands seemed to decompose and free Au surface was exposed, temperatures higher than 250 °C are required to efficiently remove them from the whole catalyst system. Moreover, the presence of residues on the support seemed to have much greater influence on the reactivity than the gold particle size.
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Affiliation(s)
- Vera Truttmann
- Technische Universität Wien Fakultät für Technische Chemie: Technische Universitat Wien Fakultat fur Technische Chemie Institute of Materials Chemistry AUSTRIA
| | - Hedda Drexler
- Technische Universität Wien Fakultät für Technische Chemie: Technische Universitat Wien Fakultat fur Technische Chemie Institute of Materials Chemistry AUSTRIA
| | - Michael Stöger-Pollach
- Technische Universität Wien: Technische Universitat Wien University Service Center for Transmission Electron Microscopy AUSTRIA
| | - Tokuhisa Kawawaki
- Tokyo University of Science Faculty of Science Division I Graduate School of Science: Tokyo Rika Daigaku Rigakubu Daiichibu Daigakuin Rigaku Kenkyuka Faculty of Science Division I, Department of Applied Chemistry JAPAN
| | - Yuichi Negishi
- Tokyo University of Science Faculty of Science Division I Graduate School of Science: Tokyo Rika Daigaku Rigakubu Daiichibu Daigakuin Rigaku Kenkyuka Faculty of Science Division I, Department of Applied Chemistry JAPAN
| | - Noelia Barrabes
- Technische Universität Wien Fakultät für Technische Chemie: Technische Universitat Wien Fakultat fur Technische Chemie Institute of Materials Chemistry Getreidemarkt 9, BC 01 1060 Wien AUSTRIA
| | - Günther Rupprechter
- Technische Universität Wien Fakultät für Technische Chemie: Technische Universitat Wien Fakultat fur Technische Chemie Institute of Materials Chemistry AUSTRIA
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30
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Shen K, Jiang M, Yang X, Zhou W, Dai Q, Wang X, Wang L, Guo Y, Guo Y, Zhan W. Low-temperature catalytic combustion of trichloroethylene over MnO -CeO2 mixed oxide catalysts. J RARE EARTH 2022. [DOI: 10.1016/j.jre.2022.04.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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31
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Gao Q, Sun K, Cui Y, Wang S, Liu C, Liu B. In situ growth of 2D/3D Bi2MoO6/CeO2 heterostructures toward enhanced photodegradation and Cr(VI) reduction. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2021.120312] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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32
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Li X, Wang Y, Chen D, Xiao J, Li N, Xu Q, Li H, He J, Lu J. Elucidating the Characteristics of Palladium-Anchored CeO2-Modified Hexagonal Nanosheet Co3O4 Catalysts for the Complete Oxidation of Volatile Organic Compounds. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.1c04823] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Xunxun Li
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu 215123, China
| | - Yaru Wang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu 215123, China
| | - Dongyun Chen
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu 215123, China
| | - Jun Xiao
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu 215123, China
| | - Najun Li
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu 215123, China
| | - Qingfeng Xu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu 215123, China
| | - Hua Li
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu 215123, China
| | - Jinghui He
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu 215123, China
| | - Jianmei Lu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu 215123, China
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33
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Halawa MI, Wu G, Salem AEA, Su L, Li BS, Zhang X. In situ synthesis of chiral AuNCs with aggregation-induced emission using glutathione and ceria precursor nanosheets for glutathione biosensing. Analyst 2022; 147:4525-4535. [DOI: 10.1039/d2an00939k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Au(i)–SG/Ce(CO3)2 NS conjugated nanoprobe was developed for selective GSH detection. The redox reaction between GSH and the NS could release Ce3+ ions to initiate the intense AIE of Au(i)–SG oligomers.
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Affiliation(s)
- Mohamed Ibrahim Halawa
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, China
- Guangdong Laboratory of Artificial Intelligence & Digital Economy (SZ), Shenzhen University, Shenzhen 518060, China
- College of Biomedical Engineering, International Health Science Innovation Center, Shenzhen Key Laboratory for Nano-Biosensing Technology, Health Science Center, Shenzhen University, Shenzhen 518060, China
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura, 35516, Egypt
- Department of Chemistry, College of Science, United Arab Emirates University, Al Ain, United Arab Emirates
| | - Guoxing Wu
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, China
| | - Alaa Eldin A. Salem
- Department of Chemistry, College of Science, United Arab Emirates University, Al Ain, United Arab Emirates
| | - Lei Su
- Guangdong Laboratory of Artificial Intelligence & Digital Economy (SZ), Shenzhen University, Shenzhen 518060, China
| | - Bing Shi Li
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, China
| | - Xueji Zhang
- Guangdong Laboratory of Artificial Intelligence & Digital Economy (SZ), Shenzhen University, Shenzhen 518060, China
- College of Biomedical Engineering, International Health Science Innovation Center, Shenzhen Key Laboratory for Nano-Biosensing Technology, Health Science Center, Shenzhen University, Shenzhen 518060, China
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34
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Wang HL, Zhao YL, Zhao HX, Yang JX, Zhai D, Sun L, Deng WQ. In Silico Design of Metal-Free Hydrophosphate Catalysts for Hydrogenation of CO2 to Formate. Phys Chem Chem Phys 2022; 24:2901-2908. [DOI: 10.1039/d1cp04582b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
CO2 reduction by H2 using metal-free catalysts is highly challenging. Frustrated Lewis pairs (FLPs) have been considered potential metal-free catalysts for this reaction. However, most FLPs are unstable, which limits...
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Green Synthesis of Nanostructure CeO 2 Using Tea Extract: Characterization and Adsorption of Dye from Aqueous Phase. Bioinorg Chem Appl 2021; 2021:5285625. [PMID: 34956341 PMCID: PMC8694989 DOI: 10.1155/2021/5285625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Accepted: 11/26/2021] [Indexed: 11/19/2022] Open
Abstract
Nanostructure CeO2 powders were synthesized using tea waste extract as gel precursor. The as-prepared samples were characterized by thermogravimetric analyzer (TGA), X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and Raman spectroscopy. Based on the TGA/DTG analysis, the intermediates of cerium chloride hydrates (CeCl3.4H2O and CeCl3.H2O) and cerium anhydrous (CeCl3) were produced, and the formation temperature of CeO2 was estimated to be 773 K. The cubic fluorite structure of CeO2 was detected to be the predominant species and was completely formed at the calcination temperature of 773K–1073 K with a crystal size between 8.8 and 11.4 nm based on the XRD measurement. Moreover, the main chemical state of ceria on the surface of the synthesized samples was confirmed to be tetravalent ceria by XPS. All samples show a strong Raman signal at a well-defined chemical shift of 463 cm−1 and a significant symmetry feature was observed, suggesting that the tetravalent ceria is the dominant species throughout the bulk sample. All the synthesized CeO2 calcined at different temperatures showed higher adsorption efficiency for Congo red (CR) compared with commercial CeO2. The adsorption efficiency maintained a steady state of more than 95% when the concentration of CR and adsorption temperature were varied in this study. The kinetic analysis showed that the second-order model was the appropriate model to interpret the adsorption behavior of synthesized CeO2. The calculated adsorption capacity derived from the second-order model is in good agreement with the experimental data. The isotherm analysis revealed that the Freundlich and D-R models fit well for the synthesized CeO2 and represent physisorption with a multilayer mechanism. The thermodynamic parameters, including the changes in Gibb's free energy, enthalpy, and entropy, suggested that the adsorption of CR on the synthesized CeO2 sample was a spontaneous and endothermic process.
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Huang Q, Xu L, Xiao Y, Zhu J, An G, Li P, Yang B, Chen M, Yang H. Application of MnCeO supported on palygorskite and Al(OH)3 for HCHO oxidation: Catalytic performance and stability. J RARE EARTH 2021. [DOI: 10.1016/j.jre.2021.11.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Yu X, Dai L, Peng Y, Deng J, Liu Y, Jing L, Zhang X, Hou Z, Wang J, Dai H. High Selectivity to HCl for the Catalytic Removal of 1,2-Dichloroethane Over RuP/3DOM WO x: Insights into the Effects of P-Doping and H 2O Introduction. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2021; 55:14906-14916. [PMID: 34633800 DOI: 10.1021/acs.est.1c05586] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Ru-based catalysts for catalytic combustion of high-toxicity Cl-containing volatile organic compounds are inclined to produce Cl2 instead of ideal HCl due to the Deacon reaction. We herein reported that the three-dimensionally ordered macroporous (3DOM) WOx-supported RuP nanocatalyst greatly improved HCl selectivity (at 400 °C, increased from 66.0% over Ru/3DOM WOx to 96.4% over RuP/3DOM WOx) and reduced chlorine-containing byproducts for 1,2-dichloroethane (1,2-DCE) oxidation. P-doping enhanced the number of structural hydroxyl groups and Brønsted acid sites. The isotopic 1,2-DCE temperature-programmed desorption experiment in the presence of H218O indicated the generation of a new active oxygen species 16O18O that participated in the reaction. Generally, P-doping and H2O introduction could promote the exchange reaction between Cl and hydroxyl groups, rather than oxygen defects, and then benefit the production of HCl and reduce the generation of other chlorine species or Cl2, via the reaction processes of C2H3Cl → alcohol → aldehyde → carboxylic acids.
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Affiliation(s)
- Xiaohui Yu
- Beijing Key Laboratory for Green Catalysis and Separation, Key Laboratory of Beijing on Regional Air Pollution Control, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Laboratory of Catalysis Chemistry and Nanoscience, Department of Environmental Chemical Engineering, School of Environmental and Chemical Engineering, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, P. R. China
| | - Lingyun Dai
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Yue Peng
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, P. R. China
| | - Jiguang Deng
- Beijing Key Laboratory for Green Catalysis and Separation, Key Laboratory of Beijing on Regional Air Pollution Control, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Laboratory of Catalysis Chemistry and Nanoscience, Department of Environmental Chemical Engineering, School of Environmental and Chemical Engineering, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, P. R. China
| | - Yuxi Liu
- Beijing Key Laboratory for Green Catalysis and Separation, Key Laboratory of Beijing on Regional Air Pollution Control, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Laboratory of Catalysis Chemistry and Nanoscience, Department of Environmental Chemical Engineering, School of Environmental and Chemical Engineering, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, P. R. China
| | - Lin Jing
- Beijing Key Laboratory for Green Catalysis and Separation, Key Laboratory of Beijing on Regional Air Pollution Control, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Laboratory of Catalysis Chemistry and Nanoscience, Department of Environmental Chemical Engineering, School of Environmental and Chemical Engineering, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, P. R. China
| | - Xing Zhang
- Beijing Key Laboratory for Green Catalysis and Separation, Key Laboratory of Beijing on Regional Air Pollution Control, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Laboratory of Catalysis Chemistry and Nanoscience, Department of Environmental Chemical Engineering, School of Environmental and Chemical Engineering, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, P. R. China
| | - Zhiquan Hou
- Beijing Key Laboratory for Green Catalysis and Separation, Key Laboratory of Beijing on Regional Air Pollution Control, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Laboratory of Catalysis Chemistry and Nanoscience, Department of Environmental Chemical Engineering, School of Environmental and Chemical Engineering, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, P. R. China
| | - Jia Wang
- Beijing Key Laboratory for Green Catalysis and Separation, Key Laboratory of Beijing on Regional Air Pollution Control, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Laboratory of Catalysis Chemistry and Nanoscience, Department of Environmental Chemical Engineering, School of Environmental and Chemical Engineering, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, P. R. China
| | - Hongxing Dai
- Beijing Key Laboratory for Green Catalysis and Separation, Key Laboratory of Beijing on Regional Air Pollution Control, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Laboratory of Catalysis Chemistry and Nanoscience, Department of Environmental Chemical Engineering, School of Environmental and Chemical Engineering, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, P. R. China
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38
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Gao Q, Cui Y, Zhang H, Wang S, Liu B, Liu C. Construction of Z–scheme 1D CdS nanorods/2D ultrathin CeO2 nanosheets toward enhanced photodegradation and hydrogen evolution. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.119116] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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39
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Zhang X, Liu Y, Deng J, Jing L, Yu X, Han Z, Dai H. Effect of transition metal oxide doping on catalytic activity of titania for the oxidation of 1,2-dichloroethane. Catal Today 2021. [DOI: 10.1016/j.cattod.2019.12.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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40
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Liu H, Yang J, Jia Y, Wang Z, Jiang M, Shen K, Zhao H, Guo Y, Guo Y, Wang L, Dai S, Zhan W. Significant Improvement of Catalytic Performance for Chlorinated Volatile Organic Compound Oxidation over RuO x Supported on Acid-Etched Co 3O 4. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2021; 55:10734-10743. [PMID: 34270224 DOI: 10.1021/acs.est.1c02970] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Ru catalysts have attracted increasing attention in catalytic oxidation of chlorinated volatile organic compounds (CVOCs). However, the development of Ru catalysts with high activity and thermal stability for CVOC oxidation still poses significant challenges due to their restrictive relationship. Herein, a strategy for constructing surface defects on Co3O4 support by acid etching was utilized to strengthen the interaction between active RuOx species and the Co3O4 support. Consequently, both the dispersity and thermal stability of RuOx species were significantly improved, achieving both high activity and stability of Ru catalysts for CVOC oxidation. The optimized Ru catalyst on the HF-etched Co3O4 support (Ru/Co3O4-F) achieved complete oxidation of vinyl chloride at 260 °C under 30 000 mL·g-1·h-1, which was lower than 300 °C for the Ru catalyst on the original Co3O4 (Ru/Co3O4). More importantly, the Ru species on the Ru/Co3O4-F catalyst were hardly lost after calcination at 500-700 °C and even reacting at 650 °C for 120 h. On this basis, the polychlorinated byproducts over the Ru/Co3O4-F catalyst were almost completely effaced by phosphate modification on the catalyst surface. These findings show that the method combining acid etching of the support and phosphate modification provides a strategy for the advancement of catalyst design for CVOC oxidation.
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Affiliation(s)
- Hao Liu
- Key Laboratory for Advanced Materials and Research Institute of Industrial Catalysis, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Jing Yang
- Key Laboratory for Advanced Materials and Research Institute of Industrial Catalysis, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Yanyan Jia
- Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Centre, Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
- Frontiers Science Center for Materiobiology and Dynamic Chemistry, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Zhiqiang Wang
- Key Laboratory for Advanced Materials and Joint International Research Laboratory for Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Centre for Computational Chemistry and Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Mingxiang Jiang
- Key Laboratory for Advanced Materials and Research Institute of Industrial Catalysis, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Kai Shen
- Key Laboratory for Advanced Materials and Research Institute of Industrial Catalysis, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Hailin Zhao
- Key Laboratory for Advanced Materials and Research Institute of Industrial Catalysis, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Yanglong Guo
- Key Laboratory for Advanced Materials and Research Institute of Industrial Catalysis, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Yun Guo
- Key Laboratory for Advanced Materials and Research Institute of Industrial Catalysis, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Li Wang
- Key Laboratory for Advanced Materials and Research Institute of Industrial Catalysis, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Sheng Dai
- Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Centre, Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
- Frontiers Science Center for Materiobiology and Dynamic Chemistry, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Wangcheng Zhan
- Key Laboratory for Advanced Materials and Research Institute of Industrial Catalysis, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
- Frontiers Science Center for Materiobiology and Dynamic Chemistry, East China University of Science and Technology, Shanghai 200237, P. R. China
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Liu H, Shen K, Zhao H, Jiang Y, Guo Y, Guo Y, Wang L, Zhan W. A new strategy to improve catalytic activity for chlorinated volatile organic compounds oxidation over cobalt oxide: Introduction of strontium carbonate. J INDIAN CHEM SOC 2021. [DOI: 10.1016/j.jics.2021.100116] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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42
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Ling W, Zhao H, Wu S, Tang Z, Zha F. A CeCoO x Core/Nb 2 O 5 @TiO 2 Double-Shell Nanocage Catalyst Demonstrates High Activity and Water Resistance for Catalytic Combustion of o-Dichlorobenzene. Chemistry 2021; 27:10356-10368. [PMID: 33988891 DOI: 10.1002/chem.202100392] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Indexed: 11/07/2022]
Abstract
A series of catalysts with different core-shell structures has been successfully prepared by a hydrothermal method. They consisted of CeCoOx @TiO2 (single shell), CeCoOx @Nb2 O5 (single shell) and CeCoOx @Nb2 O5 @TiO2 (double shell) core-shell nanocages and CeCoOx nanocages, in which CeCoOx was the core and TiO2 and Nb2 O5 were shells. The influence of the core-shell structure on the catalytic performance of o-dichlorobenzene was investigated by activity, water-resistance, and thermal stability tests as well as catalyst characterization. The temperatures corresponding to 90 % conversion of o-dichlorobenzene (T90 ) of CeCoOx , CeCoOx @TiO2 , CeCoOx @Nb2 O5 , and CeCoOx @Nb2 O5 @TiO2 catalysts were 415, 383, 362 and 367 °C, respectively. CeCoOx @Nb2 O5 exhibited excellent catalytic activity, mainly owing to the special core-shell structure, large specific surface area, abundant activity of Co3+ , Ce3+ , Nb5+ , strong reducibility, and more active oxygen vacancies. It can be seen that the Nb2 O5 coating can greatly improve the catalytic activity of the catalyst. In addition, due to the protective effect of the TiO2 shell on CeCoOx , CeCoOx @Nb2 O5 @TiO2 catalysts exhibited outstanding thermal and hydrothermal stability for 20 hours. The T90 of CeCoOx @Nb2 O5 @TiO2 was slightly lower than that of CeCoOx @Nb2 O5 , but it had higher stability and hydrothermal stability. Furthermore, possible reaction pathways involving the Mars-van-Krevelen (MvK) and Langmuir-Hinshelwood (L-H) models were deduced based on studies of the temperature-programmed desorption of O2 (O2 -TPD), X-ray photoelectron spectroscopy (XPS), and in situ diffuse reflectance FTIR spectroscopy (DRIFTS) characterization.
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Affiliation(s)
- Weitong Ling
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, and, National Engineering Research Center for Fine Petrochemical Intermediates, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, P. R. China.,College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, 730000, P. R. China
| | - Haijun Zhao
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, and, National Engineering Research Center for Fine Petrochemical Intermediates, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, P. R. China
| | - Shilin Wu
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, and, National Engineering Research Center for Fine Petrochemical Intermediates, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, P. R. China
| | - Zhicheng Tang
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, and, National Engineering Research Center for Fine Petrochemical Intermediates, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, P. R. China
| | - Fei Zha
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, 730000, P. R. China
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Fei Z, Wang Z, Li D, Xue F, Cheng C, Liu Q, Chen X, Cui M, Qiao X. Silica-confined Ru highly dispersed on ZrO 2 with enhanced activity and thermal stability in dichloroethane combustion. NANOSCALE 2021; 13:10765-10770. [PMID: 34109329 DOI: 10.1039/d1nr01538a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
An efficient strategy (spontaneous deposition to enhance noble metal dispersity and core-shell confinement to inhibit noble metal sintering) is presented to synthesize highly active and thermally stable Ru/ZrO2@SiO2 catalysts for dichloroethane combustion.
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Affiliation(s)
- Zhaoyang Fei
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, No. 30 Puzhu South Road, Nanjing 211816, China.
| | - Zhicheng Wang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, No. 30 Puzhu South Road, Nanjing 211816, China.
| | - Dunfei Li
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, No. 30 Puzhu South Road, Nanjing 211816, China.
| | - Fan Xue
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, No. 30 Puzhu South Road, Nanjing 211816, China.
| | - Chao Cheng
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, No. 30 Puzhu South Road, Nanjing 211816, China.
| | - Qing Liu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, No. 30 Puzhu South Road, Nanjing 211816, China.
| | - Xian Chen
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, No. 30 Puzhu South Road, Nanjing 211816, China.
| | - Mifen Cui
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, No. 30 Puzhu South Road, Nanjing 211816, China.
| | - Xu Qiao
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, No. 30 Puzhu South Road, Nanjing 211816, China.
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Gao Q, Cui Y, Wang S, Liu B, Liu C. Enhanced photocatalytic activation of peroxymonosulfate by CeO2 incorporated ZnCo–layered double hydroxide toward organic pollutants removal. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.118413] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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45
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Dai Q, Shen K, Deng W, Cai Y, Yan J, Wu J, Guo L, Liu R, Wang X, Zhan W. HCl-Tolerant H xPO 4/RuO x-CeO 2 Catalysts for Extremely Efficient Catalytic Elimination of Chlorinated VOCs. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2021; 55:4007-4016. [PMID: 33666414 DOI: 10.1021/acs.est.0c08256] [Citation(s) in RCA: 54] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Bulk metal doping and surface phosphate modification were synergically adopted in a rational design to upgrade the CeO2 catalyst, which is highly active but easily deactivated for the catalytic oxidation of chlorinated volatile organic compounds (Cl-VOCs). The metal doping increased the redox ability and defect sites of CeO2, which mostly promoted catalytic activity and inhibited the formation of dechlorinated byproducts but generated polychlorinated byproducts. The subsequent surface modification of the metal-doped CeO2 catalysts with nonmetallic phosphate completely suppressed the formation of polychlorinated byproducts and, more importantly, enhanced the stability of the surface structure by forming a chainmail layer. A highly active, durable, and selective catalyst of phosphate-functionalized RuOx-CeO2 was the most promising among all the metal-doped (Ru, Pd, Pt, Cr, Mn, Fe, Co, and Cu) CeO2 catalysts investigated owing to the prominent chemical stability of RuOx and its superior versatility in the catalytic oxidation of different kinds of Cl-VOCs and other typical pollutants, including dimethyl sulfide, CO, and C3H8. Moreover, the chemical stability of the catalyst, including its bulk and surface structural stability, was investigated by combining intensive treatment with HCl/H2O or HCl with subsequent ex situ ultraviolet-visible light Raman spectroscopy and confirmed the superior resistance to Cl poisoning of the phosphate-functionalized RuOx-CeO2. This work exemplifies a promising strategy for developing ideal catalysts for the removal of Cl-VOCs and provides a catalyst with the superior catalytic performance in Cl-VOC oxidation to date.
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Affiliation(s)
- Qiguang Dai
- Key Laboratory for Advanced Materials, Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Kai Shen
- Key Laboratory for Advanced Materials, Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Wei Deng
- School of Environmental Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
| | - Yuanpu Cai
- Key Laboratory for Advanced Materials, Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Jiaorong Yan
- Key Laboratory for Advanced Materials, Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Jinyan Wu
- Key Laboratory for Advanced Materials, Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Limin Guo
- School of Environmental Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
| | - Rui Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, P. R. China
| | - Xingyi Wang
- Key Laboratory for Advanced Materials, Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Wangcheng Zhan
- Key Laboratory for Advanced Materials, Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, P. R. China
- Frontiers Science Centre for Materiobiology and Dynamic Chemistry, East China University of Science and Technology, Shanghai 200237, P. R. China
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46
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Lin F, Wang Z, Zhang Z, Xiang L, Yuan D, Yan B, Wang Z, Chen G. Comparative Investigation on Chlorobenzene Oxidation by Oxygen and Ozone over a MnO x/Al 2O 3 Catalyst in the Presence of SO 2. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2021; 55:3341-3351. [PMID: 33605716 DOI: 10.1021/acs.est.0c07862] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Catalytic oxidation of volatile organic compounds (VOCs) usually encounters complicated components in flue gas causing severe deactivation that restrict its application in specific conditions. The Cl substitution in chlorobenzene further increases poisoning risks. Ozone assistance has unique superiority that can overcome these bottleneck problems. Herein, this study performs a comparative investigation of CB oxidation by oxygen and ozone over a simple Mn/Al2O3 catalyst. CB conversion suffered from slight deactivation in oxygen atmosphere (from 90 to 70%) and more severe deactivation in the presence of SO2 (from 90 to 45%) at 480 °C. Introduction of ozone successfully attained high CB conversion at low temperature (120 °C) with excellent stability and less byproducts. Especially, CB oxidation by ozone maintained its original conversion in the presence of SO2. The deactivation process was simulated by synthesizing several sulfated catalysts. Direct sulfation on Mn/Al2O3 attained more severe deactivation in CB conversion and CO2 formation than sulfation on the Al2O3 support. Ozone with a strong oxidation property promoted the CB oxidation cycle, facilitated desorption of carbonaceous intermediates, and protected MnOx species from severe erosion, thus exhibiting high and stable performance in CB oxidation.
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Affiliation(s)
- Fawei Lin
- School of Environmental Science and Engineering, Tianjin University/Tianjin Key Lab of Biomass/Wastes Utilization, Tianjin 300072, P. R. China
| | - Zhi Wang
- School of Environmental Science and Engineering, Tianjin University/Tianjin Key Lab of Biomass/Wastes Utilization, Tianjin 300072, P. R. China
| | - Zhiman Zhang
- School of Environmental Science and Engineering, Tianjin University/Tianjin Key Lab of Biomass/Wastes Utilization, Tianjin 300072, P. R. China
| | - Li Xiang
- School of Environmental Science and Engineering, Tianjin University/Tianjin Key Lab of Biomass/Wastes Utilization, Tianjin 300072, P. R. China
| | - Dingkun Yuan
- The Institute for Energy Engineering, China Jiliang University, Hangzhou 310000, P. R. China
| | - Beibei Yan
- School of Environmental Science and Engineering, Tianjin University/Tianjin Key Lab of Biomass/Wastes Utilization, Tianjin 300072, P. R. China
| | - Zhihua Wang
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, P. R. China
| | - Guanyi Chen
- School of Mechanical Engineering, Tianjin University of Commerce, Tianjin 300134, P. R. China
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47
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Unveiling the importance of reactant mass transfer in environmental catalysis: Taking catalytic chlorobenzene oxidation as an example. CHINESE CHEM LETT 2021. [DOI: 10.1016/j.cclet.2020.09.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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48
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Comparative study of Co3O4-ZSM-5 catalysts synthesized by different hydrothermal methods for the catalytic oxidation of dichloromethane. CHINESE CHEM LETT 2021. [DOI: 10.1016/j.cclet.2020.09.031] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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49
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Lv X, Cai S, Chen J, Yan D, Jiang M, Chen J, Jia H. Tuning the degradation activity and pathways of chlorinated organic pollutants over CeO 2 catalyst with acid sites: synergistic effect of Lewis and Brønsted acid sites. Catal Sci Technol 2021. [DOI: 10.1039/d1cy00626f] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
The synergistic effect of Lewis and Brønsted acid sites can promote the effective degradation of chlorobenzene following the hydrolysis pathway of producing less toxic by-products.
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Affiliation(s)
- Xuelong Lv
- CAS Center for Excellence in Regional Atmospheric Environment
- and Key Laboratory of Urban Pollutant Conversion
- Institute of Urban Environment, Chinese Academy of Sciences
- Xiamen
- China
| | - Songcai Cai
- CAS Center for Excellence in Regional Atmospheric Environment
- and Key Laboratory of Urban Pollutant Conversion
- Institute of Urban Environment, Chinese Academy of Sciences
- Xiamen
- China
| | - Jin Chen
- CAS Center for Excellence in Regional Atmospheric Environment
- and Key Laboratory of Urban Pollutant Conversion
- Institute of Urban Environment, Chinese Academy of Sciences
- Xiamen
- China
| | - Dongxu Yan
- CAS Center for Excellence in Regional Atmospheric Environment
- and Key Laboratory of Urban Pollutant Conversion
- Institute of Urban Environment, Chinese Academy of Sciences
- Xiamen
- China
| | - Mingzhu Jiang
- CAS Center for Excellence in Regional Atmospheric Environment
- and Key Laboratory of Urban Pollutant Conversion
- Institute of Urban Environment, Chinese Academy of Sciences
- Xiamen
- China
| | - Jing Chen
- University of Chinese Academy of Sciences
- Beijing
- China
- Xiamen Institute of Rare-earth Materials
- Haixi Institutes
| | - Hongpeng Jia
- CAS Center for Excellence in Regional Atmospheric Environment
- and Key Laboratory of Urban Pollutant Conversion
- Institute of Urban Environment, Chinese Academy of Sciences
- Xiamen
- China
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50
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Ying Q, Liu Y, Zhang Y, Wu Z. In situ sulfation of Cu/TiO 2 catalysts for catalytic combustion of dichloromethane. Catal Sci Technol 2021. [DOI: 10.1039/d0cy02326d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein, a facile in situ sulfation strategy was employed for modifying Cu/TiO2 catalysts using CuSO4 as the precursor to enhance the performance of dichloromethane (DCM) catalytic combustion.
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Affiliation(s)
- Qingji Ying
- Department of Environmental Engineering
- Zhejiang University
- Hangzhou
- P. R. China
| | - Yue Liu
- Department of Environmental Engineering
- Zhejiang University
- Hangzhou
- P. R. China
| | - Yaoyu Zhang
- Department of Environmental Engineering
- Zhejiang University
- Hangzhou
- P. R. China
| | - Zhongbiao Wu
- Department of Environmental Engineering
- Zhejiang University
- Hangzhou
- P. R. China
- Zhejiang Provincial Engineering Research Center of Industrial Boiler & Furnace Flue Gas Pollution Control
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