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Belkessa N, Assadi AA, Bouzaza A, Nguyen-Tri P, Amrane A, Khezami L. A review of non-thermal plasma -catalysis: The mutual influence and sources of synergetic effect for boosting volatile organic compounds removal. ENVIRONMENTAL RESEARCH 2024; 257:119333. [PMID: 38849000 DOI: 10.1016/j.envres.2024.119333] [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: 09/16/2023] [Revised: 05/16/2024] [Accepted: 06/02/2024] [Indexed: 06/09/2024]
Abstract
This review is aimed at researchers in air pollution control seeking to understand the latest advancements in volatile organic compound (VOC) removal. Implementing of plasma-catalysis technology for the removal of volatile organic compounds (VOCs) led to a significant boost in terms of degradation yield and mineralization rate with low by-product formation. The plasma-catalysis combination can be used in two distinct ways: (I) the catalyst is positioned downstream of the plasma discharge, known as the "post plasma catalysis configuration" (PPC), and (II) the catalyst is located in the plasma zone and exposed directly to the discharge, called "in plasma catalysis configuration" (IPC). Coupling these two technologies, especially for VOCs elimination has attracted the interest of many researchers in recent years. The term "synergy" is widely reported in their works and associated with the positive effect of the plasma catalysis combination. This review paper investigates the state of the art of newly published papers about catalysis, photocatalysis, non-thermal plasma, and their combination for VOC removal application. The focus is on understanding different synergy sources operating mutually between plasma and catalysis discussed and classified into two main parts: the effect of the plasma discharge on the catalyst and the effect of the catalyst on plasma discharge. This approach has the potential for application in air purification systems for industrial processes or indoor environments.
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Affiliation(s)
- Nacer Belkessa
- Univ Rennes, École Nationale Supérieure de Chimie de Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000, Rennes, France
| | - Aymen Amin Assadi
- College of Engineering, Imam Mohammad Ibn Saud Islamic University, IMSIU, Riyadh, 11432, Saudi Arabia.
| | - Abdelkrim Bouzaza
- Univ Rennes, École Nationale Supérieure de Chimie de Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000, Rennes, France
| | - Phuong Nguyen-Tri
- Laboratory of Advanced Materials for Energy and Environnent, Université Du Québec à Trois-Rivières (UQTR), 3351, Boul. des Forges, C.P. 500, Trois-Rivières, Québec, G9A 5H7, Canada
| | - Abdetif Amrane
- Univ Rennes, École Nationale Supérieure de Chimie de Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000, Rennes, France
| | - Lotfi Khezami
- Department of Chemistry, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU), P.O. Box 5701, Riyadh, 11623, Saudi Arabia
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2
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Guo H, Yin Q, Chen Y, Sun T, Liu N, Sun S, Wang M, Ma X. Heat-resistant boron-nitrogen doped lignin-derived adsorbent-catalyst for gaseous aromatic pollutants removal. CHEMOSPHERE 2024; 361:142493. [PMID: 38823426 DOI: 10.1016/j.chemosphere.2024.142493] [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: 01/15/2024] [Revised: 05/20/2024] [Accepted: 05/29/2024] [Indexed: 06/03/2024]
Abstract
Lignin-based carbon material can be utilized as carbonaceous adsorbents for the removal of toxic gaseous organic pollutants, while the poor heat-resistance limited its widely application. Here in, B-N co-doped lignin carbon (BN-C) with high thermal stability was synthesized, and the optimized BN-C (1:2) exhibited notably improved heat resistance with the decomposition temperature up to 505 °C, and excellent adsorption capacity for o-dichlorobenzene (o-DCB) (1510.0 mg/g) and toluene (947.3 mg/g), together with good cyclic stability over 10 cycles for o-dichlorobenzene. The existence of abundant hexagonal boron nitride (h-BN) with good thermal conductivity contributed to the superior heat-resistance of BN-C (1:2), and the high specific surface area (1764.5 m2/g), enriched hydroxyl functional groups and improved graphitization degree contributed to its enhanced adsorption performance. More importantly, BN-C (1:2) supported Ru could effectively remove o-DCB and toluene at wide temperature range (50-300 °C). The present work guided the development of heat-resistant lignin-derived adsorbent-catalyst for gaseous aromatic pollutants removal, which benefits both environmental protection and resource utilization.
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Affiliation(s)
- Haiwei Guo
- School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin, 300401, China.
| | - Qiqi Yin
- School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin, 300401, China
| | - Yifeng Chen
- School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin, 300401, China
| | - Tian Sun
- School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin, 300401, China
| | - Na Liu
- School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin, 300401, China
| | - Shuo Sun
- School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin, 300401, China
| | - Meiyan Wang
- School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin, 300401, China
| | - Xiaodong Ma
- School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin, 300401, China.
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Chen X, Wang X, Jia Z, Yang C, Liu Z, Wei Y, Wang M, Liang M. Weakened Mn-O bond in Mn-Ce catalysts through K doping induced oxygen activation for boosting benzene oxidation at low temperatures. J Colloid Interface Sci 2024; 666:88-100. [PMID: 38583213 DOI: 10.1016/j.jcis.2024.04.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2024] [Revised: 03/19/2024] [Accepted: 04/02/2024] [Indexed: 04/09/2024]
Abstract
K-doped Mn-Ce solid solution catalysts were synthesized using a combination of coprecipitation and hydrothermal methods, demonstrating excellent performance in benzene oxidation. The catalyst K1Ce5Mn5 exhibited comparable activity to noble metal catalysts, achieving a 90 % benzene conversion at approximately 194 ℃. Durable tests under dry and moist conditions revealed that the catalyst could maintain its activity for 50 h at 218 ℃ and 236 ℃, respectively. Characterization results indicated that the catalyst's enhanced activity resulted from the weakened Mn-O bonding caused by the introduction of K+, facilitating the activation of oxygen and its involvement in the reaction. CeOx, the main crystalline phase of Mn-Ce solid solutions, provided abundant oxygen vacancies for capturing and activating oxygen molecules for the weakened Mn-O structures. This conclusion was further supported by partial density of state analysis from density functional theory computations, revealing that the introduction of K+ weakened the orbital hybridization of Mn3d and O2p. Finally, in situ diffuse reflectance infrared Fourier-transform spectroscopy (in situ DRIFTS) studies on Ce5Mn5 and K1Ce5Mn5 catalysts suggested that the introduction of K+ promoted the conversion of adsorbed benzene. Furthermore, intermediate products were transformed more rapidly for K1Ce5Mn5 compared to Ce5Mn5.
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Affiliation(s)
- Xi Chen
- College of Environmental Science and Engineering, Taiyuan University of Technology, Jinzhong 030600, China; Shanxi Key Laboratory of Compound Air Pollutions Identification and Control, Jinzhong 030600, China; Shanxi Institute of Eco-Environmental Planning and Technology, Taiyuan 030009, China
| | - Xiaoyan Wang
- College of Environmental Science and Engineering, Taiyuan University of Technology, Jinzhong 030600, China
| | - Ziliang Jia
- College of Environmental Science and Engineering, Taiyuan University of Technology, Jinzhong 030600, China
| | - Chao Yang
- College of Environmental Science and Engineering, Taiyuan University of Technology, Jinzhong 030600, China; Shanxi Key Laboratory of Compound Air Pollutions Identification and Control, Jinzhong 030600, China
| | - Zhihong Liu
- College of Environmental Science and Engineering, Taiyuan University of Technology, Jinzhong 030600, China
| | - Yuexing Wei
- College of Environmental Science and Engineering, Taiyuan University of Technology, Jinzhong 030600, China
| | - Mengxue Wang
- College of Environmental Science and Engineering, Taiyuan University of Technology, Jinzhong 030600, China
| | - Meisheng Liang
- College of Environmental Science and Engineering, Taiyuan University of Technology, Jinzhong 030600, China; Shanxi Key Laboratory of Compound Air Pollutions Identification and Control, Jinzhong 030600, China.
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Su Y, Han B, Meng Q, Luo X, Wu Z, Weng X. Unveiling the Function of Oxygen Vacancy on Facet-Dependent CeO 2 for the Catalytic Destruction of Monochloromethane: Guidance for Industrial Catalyst Design. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024; 58:8086-8095. [PMID: 38666813 DOI: 10.1021/acs.est.4c00297] [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: 05/08/2024]
Abstract
Secondary pollution remains a critical challenge for the catalytic destruction of chlorinated volatile organic compounds (CVOCs). By employing experimental studies and theoretical calculations, we provide valuable insights into the catalytic behaviors exhibited by ceria rods, cubes, and octahedra for monochloromethane (MCM) destruction, shedding light on the elementary reactions over facet-dependent CeO2. Our findings demonstrate that CeO2 nanorods with the (110) facet exhibit the best performance in MCM destruction, and the role of vacancies is mainly to form a longer distance (4.63 Å) of frustrated Lewis pairs (FLPs) compared to the stoichiometric surface, thereby enhancing the activation of MCM molecules. Subsequent molecular orbital analysis showed that the adsorption of MCM mainly transferred electrons from the 3σ and 4π* orbitals to the Ce 4f orbitals, and the activation was mainly caused by weakening of the 3σ bonding orbitals. Furthermore, isotopic experiments and theoretical calculations demonstrated that the hydrogen chloride generated is mainly derived from methyl in MCM rather than from water, and the primary function of water is to form excess saturated H on the surface, facilitating the desorption of generated hydrogen chloride.
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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
| | - Bowen Han
- 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
| | - Qingjie Meng
- School of Civil & Environmental Engineering and Geography Science, Ningbo University, Ningbo 315211, P. R. China
| | - Xueqing Luo
- ZJU-Hangzhou Global Scientific and Technological Innovation Center, Hangzhou 311200, 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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Zhou Z, Li Q, Su G, Pang J, Sun B, Meng J, Shi B. Catalytic degradation of chlorinated volatile organic compounds (CVOCs) over Ce-Mn-Ti composite oxide catalysts. J Environ Sci (China) 2024; 138:326-338. [PMID: 38135400 DOI: 10.1016/j.jes.2023.03.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 03/03/2023] [Accepted: 03/12/2023] [Indexed: 12/24/2023]
Abstract
Developing industrially moldable catalysts with harmonized redox performance and acidity is of great significance for the efficient disposal of chlorinated volatile organic compounds (CVOCs) in actual exhaust gasses. Here, commercial TiO2, typically used for molding catalysts, was chosen as the carrier to fabricate a series of Ce0.02Mn0-0.24TiOx materials with different Mn doping ratios and employed for chlorobenzene (CB) destruction. The introduction of Mn remarkedly facilitated the synergistic effect of each element via the electron transfer processes: Ce3++Mn4+/3+↔Ce4++Mn3+/2+ and Mn4+/3++Ti4+↔Mn3+/2++Ti3+. These synergistic interactions in Ce0.02Mn0.04-0.24TiOx, especially Ce0.02Mn0.16TiOx, significantly elevated the active oxygen species, oxygen vacancies and redox properties, endowing the superior catalytic oxidation of CB. When the Mn doping amount increased to 0.24, a separate Mn3O4 phase appeared, which in turn might weaken the synergistic effect. Furthermore, the acidity of Ce0.02Mn0.04-0.24TiOx was decreased with the Mn doping, regulating the balance of redox property and acidity. Notably, Ce0.02Mn0.16TiOx featured relatively abundant B-acid sites. Its coordinating redox ability and moderate acidity promoted the deep oxidation of CB and RCOOH- intermediates, as well as the rapid desorption of Cl species, thus obtaining sustainable reactivity. In comparison, CeTiOx owned the strongest acidity, however, its poor redox property was not sufficient for the timely oxidative decomposition of the easier adsorbed CB, resulting in its rapid deactivation. This finding provides a promising strategy for the construction of efficient commercial molding catalysts to decompose the industrial-scale CVOCs.
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Affiliation(s)
- Zhiwei Zhou
- Henan Institute of Advanced Technology, Zhengzhou University, Zhengzhou 450052, China; Key Laboratory of Environmental Nanotechnology and Health Effects, State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qianqian Li
- Key Laboratory of Environmental Nanotechnology and Health Effects, State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Guijin Su
- Henan Institute of Advanced Technology, Zhengzhou University, Zhengzhou 450052, China; Key Laboratory of Environmental Nanotechnology and Health Effects, State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jiaxin Pang
- Key Laboratory of Environmental Nanotechnology and Health Effects, State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Bohua Sun
- Key Laboratory of Environmental Nanotechnology and Health Effects, State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jing Meng
- Key Laboratory of Environmental Nanotechnology and Health Effects, State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Bin Shi
- Key Laboratory of Environmental Nanotechnology and Health Effects, State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
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Yang Y, Hou Y, Ding X, Tian J, Li Y, Zeng Z, Wang J, Huang Z. Unravelling the impacts of sulfur dioxide on dioxin catalytic decomposition on V 2O 5/AC catalysts. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 901:166462. [PMID: 37611722 DOI: 10.1016/j.scitotenv.2023.166462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 07/25/2023] [Accepted: 08/18/2023] [Indexed: 08/25/2023]
Abstract
Dioxins are high chlorine, toxic, and persistent organic pollutants that exert significant pressure on both human and the environment. From the analysis of current pollutant removal of the whole life cycle, such as integrated removal of NOx, SO2 and dioxins in a system, the dioxins oxidation activity as well as the distribution of oxidation products in the presence of SO2 are still a challenge. In this study, dibenzofuran (DBF) was regarded as a model dioxin compound, and V2O5/AC was used as a catalyst to investigate the impact of SO2 on degradation activity and the degradation path of DBF. Various characterization results showed that SO2 could promote the transformation of DBF to intermediates through a reaction with lattice oxygen and lower the apparent activated energy of DBF catalytic oxidation on V2O5/AC catalysts. The density functional theory (DFT) calculations confirmed that SO2 improved the oxidation ability of lattice oxygen on V2O5/AC. The ethyl hydrogen fumarate intermediate decreased and the small-molecule byproducts increased, providing further evidence that SO2 accelerates the degradation of DBF and its intermediates. However, the formation of VOSO4 would inevitably deteriorate the adsorption and oxidation abilities of V2O5/AC. A model is pioneered to describe the relationship between SO2 promotion and VOSO4 inhibition on DBF catalytic oxidation on a V2O5/AC catalyst. This study is expected to provide theoretical guidance for the collaborative abatement of multi-pollutants in flue gas.
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Affiliation(s)
- Yatao Yang
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Yaqin Hou
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China.
| | - Xiaoxiao Ding
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Jie Tian
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Yifan Li
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Zequan Zeng
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, PR China
| | - Jiancheng Wang
- State Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology, Taiyuan 030024, PR China
| | - Zhanggen Huang
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China; Dalian National Laboratory for Clean Energy, Dalian 116023, PR China.
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Zhang K, Wang W, Ding H, Pan W, Ma J, Zhao Y, Song J, Zhang Z. Catalytic Oxidation of Acetone on SmMn 2O 5: Effect of Acid Etching and Loading Treatment. Inorg Chem 2023. [PMID: 37314819 DOI: 10.1021/acs.inorgchem.3c00748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The key of catalytic oxidation technology is to develop a stable catalyst with high activity. It is still a serious challenge to achieve high conversion efficiency of acetone with an integral catalyst at low temperature. In this study, the SmMn2O5 catalyst after acid etching was used as the support, and the manganese mullite composite catalyst was prepared by loading Ag and CeO2 nanoparticles on its surface. By means of SEM, TEM, XRD, N2-BET, XPS, EPR, H2-TPR, O2-TPD, NH3-TPD, DRIFT, and other characterization methods, the related factors and mechanism analysis of acetone degradation activity of the composite catalyst were discussed. Among them, the CeO2-SmMn2O5-H catalyst has the best catalytic activity at 123 and 185 °C for T50 and T100, respectively, and shows excellent water and thermal resistance and stability. In essence, the surface and lattice defects of highly exposed Mn sites were formed by acid etching, and the dispersibility of Ag and CeO2 nanoparticles was optimized. Highly dispersed Ag and CeO2 nanoparticles have a highly synergistic effect with the support SmMn2O5, and the reactive oxygen species provided by CeO2 and the electron transfer brought by Ag further promote the decomposition of acetone on the carrier SMO-H. In the field of catalytic degradation of acetone, a new catalyst modification method of high-quality active noble metals and transition metal oxides supported by acid-etched SmMn2O5 has been developed.
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Affiliation(s)
- Kai Zhang
- College of Energy and Mechanical Engineering, Shanghai University of Electric Power, No. 1851 Hucheng Ring Road, Pudong New District, Shanghai 201306, China
| | - Wenhuan Wang
- College of Energy and Mechanical Engineering, Shanghai University of Electric Power, No. 1851 Hucheng Ring Road, Pudong New District, Shanghai 201306, China
- Shanghai Power Environmental Protection Engineering Technology Research Center, No. 2588 Changyang Road, Yangpu District, Shanghai 201306, China
- Key Laboratory of Environmental Protection Technology for Clean Power Generation in No. 2588 Changyang Road, Yangpu District, Shanghai 201306, China
- Shanghai Non-Carbon Energy Conversion and Utilization Institute, No. 200240, Shanghai 201306, China
| | - Honglei Ding
- College of Energy and Mechanical Engineering, Shanghai University of Electric Power, No. 1851 Hucheng Ring Road, Pudong New District, Shanghai 201306, China
- Shanghai Power Environmental Protection Engineering Technology Research Center, No. 2588 Changyang Road, Yangpu District, Shanghai 201306, China
- Key Laboratory of Environmental Protection Technology for Clean Power Generation in No. 2588 Changyang Road, Yangpu District, Shanghai 201306, China
- Shanghai Non-Carbon Energy Conversion and Utilization Institute, No. 200240, Shanghai 201306, China
| | - Weiguo Pan
- College of Energy and Mechanical Engineering, Shanghai University of Electric Power, No. 1851 Hucheng Ring Road, Pudong New District, Shanghai 201306, China
- Shanghai Power Environmental Protection Engineering Technology Research Center, No. 2588 Changyang Road, Yangpu District, Shanghai 201306, China
- Key Laboratory of Environmental Protection Technology for Clean Power Generation in No. 2588 Changyang Road, Yangpu District, Shanghai 201306, China
- Shanghai Non-Carbon Energy Conversion and Utilization Institute, No. 200240, Shanghai 201306, China
| | - Junchi Ma
- College of Energy and Mechanical Engineering, Shanghai University of Electric Power, No. 1851 Hucheng Ring Road, Pudong New District, Shanghai 201306, China
| | - Yuetong Zhao
- College of Energy and Mechanical Engineering, Shanghai University of Electric Power, No. 1851 Hucheng Ring Road, Pudong New District, Shanghai 201306, China
| | - Jie Song
- College of Energy and Mechanical Engineering, Shanghai University of Electric Power, No. 1851 Hucheng Ring Road, Pudong New District, Shanghai 201306, China
| | - Ziyi Zhang
- College of Energy and Mechanical Engineering, Shanghai University of Electric Power, No. 1851 Hucheng Ring Road, Pudong New District, Shanghai 201306, China
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Pan C, Wang W, Fu C, Chol Nam J, Wu F, You Z, Xu J, Li J. Promoted wet peroxide oxidation of chlorinated volatile organic compounds catalyzed by FeOCl supported on macro-microporous biomass-derived activated carbon. J Colloid Interface Sci 2023; 646:320-330. [PMID: 37201460 DOI: 10.1016/j.jcis.2023.05.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2023] [Revised: 04/23/2023] [Accepted: 05/03/2023] [Indexed: 05/20/2023]
Abstract
Chlorinated volatile organic compounds (CVOCs) are a recalcitrant class of air pollutants, and the strongly oxidizing reactive oxygen species (ROS) generated in advanced oxidation processes (AOPs) are promising to degrade them. In this study, a FeOCl-loaded biomass-derived activated carbon (BAC) has been used as an adsorbent for accumulating CVOCs and catalyst for activating H2O2 to construct a wet scrubber for the removal of airborne CVOCs. In addition to well-developed micropores, the BAC has macropores mimicking those of biostructures, which allows CVOCs to diffuse easily to its adsorption sites and catalytic sites. Probe experiments have revealed HO• to be the dominant ROS in the FeOCl/BAC + H2O2 system. The wet scrubber performs well at pH 3 and H2O2 concentrations as low as a few mM. It is capable of removing over 90% of dichloroethane, trichloroethylene, dichloromethane and chlorobenzene from air. By applying pulsed dosing or continuous dosing to replenish H2O2 to maintain its appropriate concentration, the system achieves good long-term efficiency. A dichloroethane degradation pathway is proposed based on the analysis of intermediates. This work may provide inspiration for the design of catalyst exploiting the inherent structure of biomass for catalytic wet oxidation of CVOCs or other contaminants.
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Affiliation(s)
- Cong Pan
- School of Resource and Environmental Sciences, Hubei Key Lab of Bioresource and Environmental Biotechnology, Wuhan University, Wuhan 430079, China
| | - Wenyu Wang
- School of Resource and Environmental Sciences, Hubei Key Lab of Bioresource and Environmental Biotechnology, Wuhan University, Wuhan 430079, China
| | - Chenchong Fu
- School of Resource and Environmental Sciences, Hubei Key Lab of Bioresource and Environmental Biotechnology, Wuhan University, Wuhan 430079, China
| | - Jong Chol Nam
- School of Resource and Environmental Sciences, Hubei Key Lab of Bioresource and Environmental Biotechnology, Wuhan University, Wuhan 430079, China
| | - Feng Wu
- School of Resource and Environmental Sciences, Hubei Key Lab of Bioresource and Environmental Biotechnology, Wuhan University, Wuhan 430079, China
| | - Zhixiong You
- School of Resource and Environmental Sciences, Hubei Key Lab of Bioresource and Environmental Biotechnology, Wuhan University, Wuhan 430079, China
| | - Jing Xu
- State Key Laboratory of Water Resources Engineering and Management, Wuhan University, Wuhan, Hubei, 430072, P.R. China.
| | - Jinjun Li
- School of Resource and Environmental Sciences, Hubei Key Lab of Bioresource and Environmental Biotechnology, Wuhan University, Wuhan 430079, China.
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Yan X, Zhao L, Huang Y, Zhang J, Jiang S. Three-dimensional porous CuO-modified CeO 2-Al 2O 3 catalysts with chlorine resistance for simultaneous catalytic oxidation of chlorobenzene and mercury: Cu-Ce interaction and structure. JOURNAL OF HAZARDOUS MATERIALS 2023; 455:131585. [PMID: 37163894 DOI: 10.1016/j.jhazmat.2023.131585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 05/03/2023] [Accepted: 05/04/2023] [Indexed: 05/12/2023]
Abstract
Chlorine poisoning effects are still challenging to develop efficient catalysts for applications in chlorobenzene (CB) and mercury (Hg0) oxidation. Herein, three-dimensional porous CuO-modified CeO2-Al2O3 catalysts with macroporous framework and mesoporous walls prepared via a dual template method were employed to study simultaneous oxidation of CB and Hg0. CuO-modified CeO2-Al2O3 catalysts with three-dimensional porous structure exhibited outstanding activity and stability for simultaneous catalytic oxidation of CB and Hg0. The results demonstrated that the addition of CuO into CeO2-Al2O3 can simultaneously enhance the acid sites and redox properties through the electronic inductive effect between CuO and CeO2 (Cu2++Ce3+↔Cu++Ce4+). Importantly, the synergistic effect between Cu and Ce species can induce abundant oxygen vacancies formation, produce more reactive oxygen species and facilitate oxygen migration, which is beneficial for the deep oxidation of chlorinated intermediates. Moreover, macroporous framework and mesoporous nanostructure dramatically improved the specific surface area for enhancing the contact efficiency between reactants and active sites, leading to a remarkable decrease of byproducts deposition. CB and Hg0 had function of mutual promotion in this reaction system. In tune with the experimental results, the possible mechanistic pathways for simultaneous catalytic oxidation of CB and Hg0 were proposed.
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Affiliation(s)
- Xin Yan
- College of Environmental and Resources, Xiangtan University, Xiangtan 411105, PR China; Hunan Provincial Environmental Protection of Engineering Technology Center of Air Complex Pollution Control (XTU), Xiangtan 411105, PR China
| | - Lingkui Zhao
- College of Environmental and Resources, Xiangtan University, Xiangtan 411105, PR China; Hunan Provincial Environmental Protection of Engineering Technology Center of Air Complex Pollution Control (XTU), Xiangtan 411105, PR China.
| | - Yan Huang
- College of Environmental and Resources, Xiangtan University, Xiangtan 411105, PR China; Hunan Provincial Environmental Protection of Engineering Technology Center of Air Complex Pollution Control (XTU), Xiangtan 411105, PR China
| | - Junfeng Zhang
- College of Environmental and Resources, Xiangtan University, Xiangtan 411105, PR China; Hunan Provincial Environmental Protection of Engineering Technology Center of Air Complex Pollution Control (XTU), Xiangtan 411105, PR China
| | - Su Jiang
- College of Environmental and Resources, Xiangtan University, Xiangtan 411105, PR China; Hunan Provincial Environmental Protection of Engineering Technology Center of Air Complex Pollution Control (XTU), Xiangtan 411105, PR China
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10
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Jia H, Xing Y, Zhang L, Zhang W, Wang J, Zhang H, Su W. Progress of catalytic oxidation of typical chlorined volatile organic compounds (CVOCs): A review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 865:161063. [PMID: 36586676 DOI: 10.1016/j.scitotenv.2022.161063] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 11/27/2022] [Accepted: 12/16/2022] [Indexed: 06/17/2023]
Abstract
Chlorinated volatile organic compounds (CVOCs) are still a part of the current atmospheric environmental problems that cannot be ignored, but unlike conventional VOCs, the presence of Cl causes various catalyst deactivations in the catalytic process. In this paper, we focus on six common CVOCs and discuss various behavioral mechanisms of the whole catalytic process from six aspects: catalyst selection, factors affecting the catalytic effect, changes in catalytic behavior in the presence of different gases, catalyst poisoning deactivation behavior, degradation products and degradation mechanisms to provide guidance for further development of low-temperature and efficient CVOCs catalysts.
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Affiliation(s)
- Haoqi Jia
- College of Environmental and Resource Sciences, Shanxi University, Taiyuan 030006, PR China
| | - Yi Xing
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, PR China; Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, University of Science and Technology Beijing, Beijing 100083, PR China
| | - Liguo Zhang
- College of Environmental and Resource Sciences, Shanxi University, Taiyuan 030006, PR China
| | - Wenbo Zhang
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, PR China
| | - Jiaqing Wang
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, PR China
| | - Hui Zhang
- Sinosteel Maanshan Mine Research Institute Co. LTD, Anhui 243071, PR China
| | - Wei Su
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, PR China; Guangdong Province Engineering Laboratory for Air Pollution Control, Guangzhou 510530, PR China.
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11
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Zhao Z, Ma S, Gao B, Bi F, Qiao R, Yang Y, Wu M, Zhang X. A systematic review of intermediates and their characterization methods in VOCs degradation by different catalytic technologies. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
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12
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Gu M, Huang Q, Xu L, Zhu J, Sun Y, Tao T, Yang B, Chen M, Yang H. Improved activity and stability for chlorobenzene oxidation over ternary Cu-Mn-O-Ce solid solution supported on cordierite. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:37535-37546. [PMID: 36574117 DOI: 10.1007/s11356-022-24988-1] [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: 10/19/2022] [Accepted: 12/22/2022] [Indexed: 06/18/2023]
Abstract
A series of CuMnOx/CeO2/cordierite and CuMnCeOx/cordierite catalysts prepared by a complex method with citric acid were investigated for the performance of chlorobenzene (CB) oxidation. The effects of the molar ratio of Mn/Cu, transition metal oxide loading, calcination temperature and time were investigated as the main investigation factor for the performance. Meanwhile, XRD, SEM, BET, H2-TPR, O2-TPD and XPS were conducted to characterize the physicochemical properties of these catalysts. The results demonstrated that CuMnOx/CeO2/cordierite catalysts prepared by step-by-step synthesis with the Cu/Mn molar ratio of 5:2 exhibited a high activity (T90 = 350 °C), owing to the incorporation of CuO and MnOx for forming CuMn2O4 spinel oxide supported on CeO2 surface. More importantly, CuMnCeOx/cordierite catalysts prepared by one-step exhibited the highest oxidation activity (T90 < 300 °C) attributed to the low H2 reduction temperature and desorption energy of surface oxygen, and the formed Cu-Mn-O-Ce solid solution and CeO2 promoted the high dispersion of CuMnOx in the supported catalysts. In addition, the possible oxidation mechanism was described to demonstrate the by-products generation and oxygen transfer of CuMnCeOx catalysts.
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Affiliation(s)
- Mingyang Gu
- Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technologies, Jiangsu Key Laboratory of Atmospheric Environmental Monitoring & Pollution Control, School of Environmental Science & Engineering, Nanjing University of Information Science & Technology, No. 219 Ningliu Road, Nanjing, 210044, China
| | - Qiong Huang
- Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technologies, Jiangsu Key Laboratory of Atmospheric Environmental Monitoring & Pollution Control, School of Environmental Science & Engineering, Nanjing University of Information Science & Technology, No. 219 Ningliu Road, Nanjing, 210044, China.
| | - Lirui Xu
- Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technologies, Jiangsu Key Laboratory of Atmospheric Environmental Monitoring & Pollution Control, School of Environmental Science & Engineering, Nanjing University of Information Science & Technology, No. 219 Ningliu Road, Nanjing, 210044, China
| | - Jie Zhu
- Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technologies, Jiangsu Key Laboratory of Atmospheric Environmental Monitoring & Pollution Control, School of Environmental Science & Engineering, Nanjing University of Information Science & Technology, No. 219 Ningliu Road, Nanjing, 210044, China
| | - Yueyin Sun
- Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technologies, Jiangsu Key Laboratory of Atmospheric Environmental Monitoring & Pollution Control, School of Environmental Science & Engineering, Nanjing University of Information Science & Technology, No. 219 Ningliu Road, Nanjing, 210044, China
| | - Tao Tao
- Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technologies, Jiangsu Key Laboratory of Atmospheric Environmental Monitoring & Pollution Control, School of Environmental Science & Engineering, Nanjing University of Information Science & Technology, No. 219 Ningliu Road, Nanjing, 210044, China
| | - Bo Yang
- Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technologies, Jiangsu Key Laboratory of Atmospheric Environmental Monitoring & Pollution Control, School of Environmental Science & Engineering, Nanjing University of Information Science & Technology, No. 219 Ningliu Road, Nanjing, 210044, China
| | - Mindong Chen
- Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technologies, Jiangsu Key Laboratory of Atmospheric Environmental Monitoring & Pollution Control, School of Environmental Science & Engineering, Nanjing University of Information Science & Technology, No. 219 Ningliu Road, Nanjing, 210044, China
| | - Hong Yang
- Department of Geography and Environmental Science, University of Reading, Whiteknights, Reading, RG6 6AB, UK
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13
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Zhao Y, Xi C, Gao S, Wang Y, Wang H, Sun P, Wu Z. Ru-based monolithic catalysts for the catalytic oxidation of chlorinated volatile organic compounds. RSC Adv 2023; 13:7037-7044. [PMID: 36874937 PMCID: PMC9977393 DOI: 10.1039/d2ra07823f] [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: 12/08/2022] [Accepted: 02/16/2023] [Indexed: 03/05/2023] Open
Abstract
A series of cordierite monolithic catalysts with Ru species supported on different available low-cost carriers were prepared and investigated for the elimination of CVOCs. The results suggest that the monolithic catalyst with Ru species supported on anatase TiO2 carrier with abundant acidic sites exhibited the desired catalytic activity for DCM oxidation with the T 90% value of 368 °C. In addition, a pseudo-boehmite sol used as binder was introduced into the preparation of the monolithic catalysts to further improve the adhesion between the powder catalysts and cordierite honeycomb carrier. The results suggest that although the T 50% and T 90% of the Ru/TiO2/PB/Cor shifted to higher temperature of 376 and 428 °C, the weight loss of the coating for the Ru/TiO2/PB/Cor catalyst was improved and decreased to 6.5 wt%. Also, the as-obtained Ru/TiO2/PB/Cor catalyst exhibited ideal catalytic properties for the abatement of ethyl acetate and ethanol, indicating that the catalyst can meet the demand for the treatment of actual multi-component industrial gas.
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Affiliation(s)
- Yemin Zhao
- Department of Environmental Engineering, Zhejiang University Hangzhou 310058 P. R. China.,Zhejiang Tianlan Environmental Protection Technology Co., Ltd. Hangzhou 311202 China .,Zhejiang Provincial Engineering Research Center of Industrial Boiler & Furnace Flue Gas Pollution Control 866 Yuhangtang Road Hangzhou 310058 P. R. China
| | - Chao Xi
- Zhejiang Tianlan Environmental Protection Technology Co., Ltd. Hangzhou 311202 China .,Zhejiang Provincial Engineering Research Center of Industrial Boiler & Furnace Flue Gas Pollution Control 866 Yuhangtang Road Hangzhou 310058 P. R. China
| | - Shan Gao
- Zhejiang Tianlan Environmental Protection Technology Co., Ltd. Hangzhou 311202 China .,Zhejiang Provincial Engineering Research Center of Industrial Boiler & Furnace Flue Gas Pollution Control 866 Yuhangtang Road Hangzhou 310058 P. R. China
| | - Yuejun Wang
- Zhejiang Tianlan Environmental Protection Technology Co., Ltd. Hangzhou 311202 China .,Zhejiang Provincial Engineering Research Center of Industrial Boiler & Furnace Flue Gas Pollution Control 866 Yuhangtang Road Hangzhou 310058 P. R. China
| | - Haiqiang Wang
- Department of Environmental Engineering, Zhejiang University Hangzhou 310058 P. R. China.,Zhejiang Provincial Engineering Research Center of Industrial Boiler & Furnace Flue Gas Pollution Control 866 Yuhangtang Road Hangzhou 310058 P. R. China
| | - Pengfei Sun
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University Hangzhou 310018 China
| | - Zhongbiao Wu
- Department of Environmental Engineering, Zhejiang University Hangzhou 310058 P. R. China.,Zhejiang Provincial Engineering Research Center of Industrial Boiler & Furnace Flue Gas Pollution Control 866 Yuhangtang Road Hangzhou 310058 P. R. China
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14
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Liang W, Zhu Y, Ren S, Shi X. Enhanced catalytic elimination of chlorobenzene over Ru/TiO2 modified with SnO2—Synergistic performance of oxidation and acidity. Chem Phys 2023. [DOI: 10.1016/j.chemphys.2022.111787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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15
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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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16
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Catalytic reduction of NO and oxidation of dichloroethane over α-MnO2 catalysts: properties-reactivity relationship. ARAB J CHEM 2023. [DOI: 10.1016/j.arabjc.2023.104587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
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17
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Duan X, Zhao T, Niu B, Wei Z, Li G, Zhang Z, Cheng J, Hao Z. Simultaneously Constructing Active Sites and Regulating Mn-O Strength of Ru-Substituted Perovskite for Efficient Oxidation and Hydrolysis Oxidation of Chlorobenzene. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2205054. [PMID: 36437038 PMCID: PMC9875690 DOI: 10.1002/advs.202205054] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 10/28/2022] [Indexed: 06/16/2023]
Abstract
Chlorinated volatile organic compounds (CVOCs) are a class of hazardous pollutants that severely threaten environmental safety and human health. Although the catalytic oxidation technique for CVOCs elimination is effective, enhancing the catalytic efficiency and simultaneously inhibiting the production of organic byproducts is still of great challenge. Herein, Ru-substituted LaMn(Ru)O3+ δ perovskite with Ru-O-Mn structure and weakened Mn-O bond strength has been developed for catalytic oxidation of chlorobenzene (CB). The formed Ru-O-Mn structure serves as favorable sites for CB adsorption and activation, while the weakening of Mn-O bond strength facilitates the formation of active oxygen species and improves oxygen mobility and catalyst reducibility. Therefore, LaMn(Ru)O3+ δ exhibits superior low-temperature activity with the temperature of 90% CB conversion decreasing by over 90 °C compared with pristine perovskite, and the deep oxidation of chlorinated byproducts produced in low temperature is also accelerated. Furthermore, the introduction of water vapor into reaction system triggers the process of hydrolysis oxidation that promotes CB destruction and inhibits the generation of chlorinated byproducts, due to the higher-activity *OOH species generated from the dissociated H2 O reacting with adsorbed oxygen. This work can provide a unique, high-efficiency, and facile strategy for CVOCs degradation and environmental improvement.
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Affiliation(s)
- Xiaoxiao Duan
- National Engineering Laboratory for VOCs Pollution Control Material & TechnologyResearch Center for Environmental Material and Pollution Control TechnologyUniversity of Chinese Academy of SciencesBeijing101408P. R. China
| | - Ting Zhao
- National Engineering Laboratory for VOCs Pollution Control Material & TechnologyResearch Center for Environmental Material and Pollution Control TechnologyUniversity of Chinese Academy of SciencesBeijing101408P. R. China
| | - Ben Niu
- National Engineering Laboratory for VOCs Pollution Control Material & TechnologyResearch Center for Environmental Material and Pollution Control TechnologyUniversity of Chinese Academy of SciencesBeijing101408P. R. China
| | - Zheng Wei
- National Engineering Laboratory for VOCs Pollution Control Material & TechnologyResearch Center for Environmental Material and Pollution Control TechnologyUniversity of Chinese Academy of SciencesBeijing101408P. R. China
| | - Ganggang Li
- National Engineering Laboratory for VOCs Pollution Control Material & TechnologyResearch Center for Environmental Material and Pollution Control TechnologyUniversity of Chinese Academy of SciencesBeijing101408P. R. China
| | - Zhongshen Zhang
- National Engineering Laboratory for VOCs Pollution Control Material & TechnologyResearch Center for Environmental Material and Pollution Control TechnologyUniversity of Chinese Academy of SciencesBeijing101408P. R. China
| | - Jie Cheng
- National Engineering Laboratory for VOCs Pollution Control Material & TechnologyResearch Center for Environmental Material and Pollution Control TechnologyUniversity of Chinese Academy of SciencesBeijing101408P. R. China
| | - Zhengping Hao
- National Engineering Laboratory for VOCs Pollution Control Material & TechnologyResearch Center for Environmental Material and Pollution Control TechnologyUniversity of Chinese Academy of SciencesBeijing101408P. R. China
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18
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Zhang X, Xu Z, Jiang M, Chen S, Han Z, Liu Y, Liu Y. Enhanced activity of CuOy/TNTs doped by CeOx for catalytic ozonation of 1,2-dichloroethane at normal temperatures: performance and catalytic mechanism. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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19
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Heterobimetallic CoCeO derived from cobalt partially-substituted Ce-UiO-66 for chlorobenzene efficient catalytic destruction. J RARE EARTH 2023. [DOI: 10.1016/j.jre.2023.01.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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20
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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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21
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Sun B, Li Q, Su G, Meng B, Wu M, Zhang Q, Meng J, Shi B. Insights into Chlorobenzene Catalytic Oxidation over Noble Metal Loading {001}-TiO 2: The Role of NaBH 4 and Subnanometer Ru Undergoing Stable Ru 0↔Ru 4+ Circulation. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:16292-16302. [PMID: 36168671 DOI: 10.1021/acs.est.2c05981] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Catalytic combustion of ubiquitous chlorinated volatile organic compounds (CVOCs) encounters bottlenecks regarding catalyst deactivation by chlorine poisoning and generation of toxic polychlorinated byproducts. Herein, Ru, Pd, and Rh were loaded on {001}-TiO2 for thermal catalytic oxidation of chlorobenzene (CB), with Ru/{001}-TiO2 representing superior reactivity, CO2 selectivity, and stability in the 1000 min on-stream test. Interestingly, both acid sites and reactive active oxygen species (ROS) were remarkably promoted via adding NaBH4. But merely enhancing these active sites of the catalyst in CVOC treatment is insufficient. Continuous deep oxidation of CB with effective Cl desorption is also a core issue successfully tackled through the steady Ru0↔Ru4+ circulation. This circulation was facilitated by the observed higher subnanometer Ru dispersion on {001}-TiO2 than the other two noble metals that was supported by single atom stability DFT calculation. Nearly 88 degradation products in off-gas were detected, with Ru/{001}-TiO2 producing the lowest polychlorinated benzene byproducts. An effective and sustainable CB degradation mechanism boosted by the cooperation of NaBH4 enhanced active sites and Ru circulation was proposed accordingly. Insights gained from this study open a new avenue to the rational design of promising catalysts for the treatment of CVOCs.
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Affiliation(s)
- Bohua Sun
- Key Laboratory of Environmental Nanotechnology and Health Effects, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, China
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qianqian Li
- Key Laboratory of Environmental Nanotechnology and Health Effects, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, China
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Guijin Su
- Key Laboratory of Environmental Nanotechnology and Health Effects, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, China
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Bowen Meng
- Key Laboratory of Environmental Nanotechnology and Health Effects, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, China
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, China
| | - Mingge Wu
- Key Laboratory of Environmental Nanotechnology and Health Effects, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, China
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qifan Zhang
- Key Laboratory of Environmental Nanotechnology and Health Effects, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, China
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jing Meng
- Key Laboratory of Environmental Nanotechnology and Health Effects, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, China
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Bin Shi
- Key Laboratory of Environmental Nanotechnology and Health Effects, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, China
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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22
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Song Z, Peng Y, Zhao X, Liu H, Gao C, Si W, Li J. Roles of Ru on the V 2O 5–WO 3/TiO 2 Catalyst for the Simultaneous Purification of NO x and Chlorobenzene: A Dechlorination Promoter and a Redox Inductor. ACS Catal 2022. [DOI: 10.1021/acscatal.2c03782] [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]
Affiliation(s)
- Zijian Song
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Yue Peng
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Xiaoguang Zhao
- Sinopec Research Institute of Petroleum Processing, Beijing 100083, China
| | - Hao Liu
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Chuan Gao
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Wenzhe Si
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Junhua Li
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
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23
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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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24
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Du Y, Xiao G, Guo Z, Lin B, Fu M, Ye D, Hu Y. A high-performance and stable Cu/Beta for adsorption-catalytic oxidation in-situ destruction of low concentration toluene. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 833:155288. [PMID: 35429572 DOI: 10.1016/j.scitotenv.2022.155288] [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] [Received: 03/19/2022] [Revised: 04/02/2022] [Accepted: 04/11/2022] [Indexed: 06/14/2023]
Abstract
Finding a cost-effective treatment to remove of low concentrations of volatile organic compounds (VOCs) is still a challenge. In this study, a Cu/Beta material was developed for in situ adsorption-catalytic oxidation of low concentrations of toluene. The results showed that the addition of Cu enhanced the adsorption and catalytic oxidation of toluene by Beta zeolite. Cu7/Beta with a Cu+ ratio of close to 50% performed best. The high adsorption of Cu7/Beta was mainly attributed to the abundant Cu+ species and the micro-mesoporous structure of the Beta zeolite, and the high catalytic oxidation was attributed to the lattice oxygen in the uniformly dispersed CuO. Finally, the adsorption intermediates and reaction pathways in the catalytic oxidation of toluene were clarified using XPS and DRIFTS spectra. This work provides new strategies for the development of efficient and stable adsorption-catalytic oxidation in situ destruction materials.
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Affiliation(s)
- Yueying Du
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China
| | - Gaofei Xiao
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China
| | - Ziyang Guo
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China
| | - Beilong Lin
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China
| | - Mingli Fu
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China; Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, Guangzhou 510006, PR China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou 510006, PR China
| | - Daiqi Ye
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China; Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, Guangzhou 510006, PR China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou 510006, PR China
| | - Yun Hu
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China; Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, Guangzhou 510006, PR China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou 510006, PR China.
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25
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Jiang T, Wang X, Chen J, Zhang J, Mai Y. Rod‐Like MnO
x
Catalyst Derived from Mn‐MOF‐74 for Chlorobenzene Oxidation at Low Temperature. ChemistrySelect 2022. [DOI: 10.1002/slct.202201409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Tingting Jiang
- Guangdong Provincial Key Laboratory of Industrial Surfactant Institute of Chemical Engineering Guangdong Academy of Science Guangzhou 510665 China
| | - Xi Wang
- Guangdong Provincial Key Laboratory of Industrial Surfactant Institute of Chemical Engineering Guangdong Academy of Science Guangzhou 510665 China
| | - Jiazhi Chen
- Guangdong Provincial Key Laboratory of Industrial Surfactant Institute of Chemical Engineering Guangdong Academy of Science Guangzhou 510665 China
| | - Junjie Zhang
- Guangdong Provincial Key Laboratory of Industrial Surfactant Institute of Chemical Engineering Guangdong Academy of Science Guangzhou 510665 China
| | - Yuliang Mai
- Guangdong Provincial Key Laboratory of Industrial Surfactant Institute of Chemical Engineering Guangdong Academy of Science Guangzhou 510665 China
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26
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Zhuang Y, Xu Z, Zhang X, Jiang M, Liu P, Chen S, Liu Y, Han Z. Vacuum-treated MnxCe1-xO2 nanorods for catalytic ozonation of 1,2-dichloroethane. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121191] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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27
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Zhang K, Ding H, Pan W, Mu X, Qiu K, Ma J, Zhao Y, Song J, Zhang Z. Research Progress of a Composite Metal Oxide Catalyst for VOC Degradation. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:9220-9236. [PMID: 35580211 DOI: 10.1021/acs.est.2c02772] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Volatile organic compounds (VOCs) are atmospheric pollutants that have been of concern for researchers in recent years because they are toxic, difficult to remove, and widely sourced and easily cause damage to the environment and human body. Most scholars use low-temperature plasma biological treatment, catalytic oxidation, adsorption, condensation, and recovery techniques to treat then effectively. Among them, catalytic oxidation technology has the advantages of a high catalytic efficiency, low energy consumption, high safety factor, high treatment efficiency, and less secondary pollution; it is currently widely used for VOC degradation technology. In this paper, the catalytic oxidation technology for the degradation of multiple types of VOCs as well as the development of a single metal oxide catalyst have been briefly introduced. We also focus on the research progress of composite metal oxide catalysts for the removal of VOCs by comparing and analyzing the metal component ratio, preparation method, and types of precursors and the catalysts' influence on the catalytic performance. In addition, the reason for catalyst deactivation and a correlation between the chemical state of the catalyst and the electron distribution are discussed. Development of a composite metal oxide catalyst for the catalytic oxidation of VOCs has been proposed.
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Affiliation(s)
- Kai Zhang
- College of Energy and Mechanical Engineering, Shanghai University of Electric Power, No. 2588 Changyang Road, Yangpu District, Shanghai 201306, China
| | - Honglei Ding
- College of Energy and Mechanical Engineering, Shanghai University of Electric Power, No. 2588 Changyang Road, Yangpu District, Shanghai 201306, China
- Shanghai Power Environmental Protection Engineering Technology Research Center, No. 2588 Changyang Road, Yangpu District, Shanghai 201306, China
- Key Laboratory of Environmental Protection Technology for Clean Power Generation, No. 2588 Changyang Road, Yangpu District, Shanghai 201306, China
| | - Weiguo Pan
- College of Energy and Mechanical Engineering, Shanghai University of Electric Power, No. 2588 Changyang Road, Yangpu District, Shanghai 201306, China
- Shanghai Power Environmental Protection Engineering Technology Research Center, No. 2588 Changyang Road, Yangpu District, Shanghai 201306, China
- Key Laboratory of Environmental Protection Technology for Clean Power Generation, No. 2588 Changyang Road, Yangpu District, Shanghai 201306, China
| | - Xiaotian Mu
- College of Energy and Mechanical Engineering, Shanghai University of Electric Power, No. 2588 Changyang Road, Yangpu District, Shanghai 201306, China
| | - Kaina Qiu
- College of Energy and Mechanical Engineering, Shanghai University of Electric Power, No. 2588 Changyang Road, Yangpu District, Shanghai 201306, China
| | - Junchi Ma
- College of Energy and Mechanical Engineering, Shanghai University of Electric Power, No. 2588 Changyang Road, Yangpu District, Shanghai 201306, China
| | - Yuetong Zhao
- College of Energy and Mechanical Engineering, Shanghai University of Electric Power, No. 2588 Changyang Road, Yangpu District, Shanghai 201306, China
| | - Jie Song
- College of Energy and Mechanical Engineering, Shanghai University of Electric Power, No. 2588 Changyang Road, Yangpu District, Shanghai 201306, China
| | - Ziyi Zhang
- College of Energy and Mechanical Engineering, Shanghai University of Electric Power, No. 2588 Changyang Road, Yangpu District, Shanghai 201306, China
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28
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Qin Y, Gu J, Cai W, Wang Z. Catalytic oxidation of chlorobenzene and PCDD/Fs over V 2O 5-WO 3/TiO 2: insights into the component effect and reaction mechanism. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:42809-42821. [PMID: 35088283 DOI: 10.1007/s11356-022-18768-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Accepted: 01/17/2022] [Indexed: 06/14/2023]
Abstract
In this work, titania supported catalysts (V-W/Ti) with different vanadium-tungsten contents were prepared and evaluated in the catalytic oxidation of chlorobenzene, which was used as the model compound of dioxins. The results showed that V2O5 is the main active component for chlorobenzene oxidation, and doping of WO3 affects the valence distributions of vanadium, contributing a bimetallic synergistic effect. The catalysts were investigated by XRD, SEM-EDS mapping, Raman, and XPS, and the changes in V element valence state and chlorine content on fresh and used catalysts were observed by XPS. Moreover, in situ FTIR studies and chlorine balance were also conducted, the addition of WO3 is helpful to the breakage of C-Cl, and a reaction mechanism for the catalytic oxidation of chlorobenzene was proposed. 3 V-5 W/Ti catalyst with better catalytic activity was selected for catalytic oxidation of PCDD/Fs using a lab scale PCDD/Fs generating and decomposing system. The degradation efficiency was 66.5% at 200 °C and 62.2% at 300 °C, which indicated that the low reaction temperature of 200 °C was conducive to the catalytic degradation of PCDDs, while the high temperature of 300 °C was facilitated the degradation of PCDFs.
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Affiliation(s)
- Yu Qin
- State Key Laboratory of Solid Waste Reuse for Building Materials, Beijing Building Materials Academy of Science Research, Beijing, 100041, China.
| | - Jun Gu
- State Key Laboratory of Solid Waste Reuse for Building Materials, Beijing Building Materials Academy of Science Research, Beijing, 100041, China
| | - Wentao Cai
- State Key Laboratory of Solid Waste Reuse for Building Materials, Beijing Building Materials Academy of Science Research, Beijing, 100041, China
| | - Zhaojia Wang
- State Key Laboratory of Solid Waste Reuse for Building Materials, Beijing Building Materials Academy of Science Research, Beijing, 100041, China
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29
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Yang S, Li X, Ma J, Guo H, Chen Y, Chen Z, Ren G, Ma X. Atomically dispersed Ru catalysts for polychlorinated aromatic hydrocarbon oxidation. NANOSCALE 2022; 14:7849-7855. [PMID: 35583071 DOI: 10.1039/d2nr00955b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The development of cost-efficient catalysts with good catalytic activity is an urgent task for polychlorinated aromatic hydrocarbon (PCAH) oxidation. Herein, atomically dispersed Ru catalysts (denoted as Ru ADCs) proved by aberration corrected high-angle annular dark-field scanning transmission electron microscopy and X-ray absorption spectroscopy were synthesized for PCAH oxidation. The oxidation results showed that 0.2 Ru ADCs exhibited enhanced catalytic activity (T50% < 250 °C, T90% < 300 °C) compared with the T90% > 300 °C on 0.2 Ru nanoparticles (NPs). Besides, 0.2 Ru ADCs demonstrated high CO2 yield with >60% CO2 ratio, along with good stability (>80% conversion for 800 mins). The better performance of 0.2 Ru ADCs was verified by kinetic experiments, in which, the apparent activation energy associated with 0.2 Ru ADCs (50.8 kJ mol-1) was significantly lower compared with that with 0.2 Ru NPs (80.0 kJ mol-1). The superior oxidation activity of 0.2 Ru ADCs was also applied to toluene oxidation. H2 temperature-programmed reduction ensured the stronger interaction of Ru species with the supports in Ru ADCs than that in Ru NPs, thus inhibiting Ru species aggregation and favoring their higher dispersion ensured by CO temperature-programmed desorption. The present work provides a potential strategy to maximize the usage of noble metal catalysts for PCAH oxidation.
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Affiliation(s)
- Shuai Yang
- Tianjin Key Laboratory of Clean Energy and Pollutant Control, School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China.
| | - Xinyang Li
- Tianjin Key Laboratory of Clean Energy and Pollutant Control, School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China.
| | - Jiawen Ma
- Tianjin Key Laboratory of Clean Energy and Pollutant Control, School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China.
| | - Haiwei Guo
- Tianjin Key Laboratory of Clean Energy and Pollutant Control, School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China.
| | - Yifeng Chen
- Tianjin Key Laboratory of Clean Energy and Pollutant Control, School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China.
| | - Zhao Chen
- Tianjin Key Laboratory of Clean Energy and Pollutant Control, School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China.
| | - Gengbo Ren
- Tianjin Key Laboratory of Clean Energy and Pollutant Control, School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China.
| | - Xiaodong Ma
- Tianjin Key Laboratory of Clean Energy and Pollutant Control, School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China.
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30
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Humayun M, Wang C, Luo W. Recent Progress in the Synthesis and Applications of Composite Photocatalysts: A Critical Review. SMALL METHODS 2022; 6:e2101395. [PMID: 35174987 DOI: 10.1002/smtd.202101395] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Indexed: 06/14/2023]
Abstract
Photocatalysis is an advanced technique that transforms solar energy into sustainable fuels and oxidizes pollutants via the aid of semiconductor photocatalysts. The main scientific and technological challenges for effective photocatalysis are the stability, robustness, and efficiency of semiconductor photocatalysts. For practical applications, researchers are trying to develop highly efficient and stable photocatalysts. Since the literature is highly scattered, it is urgent to write a critical review that summarizes the state-of-the-art progress in the design of a variety of semiconductor composite photocatalysts for energy and environmental applications. Herein, a comprehensive review is presented that summarizes an overview, history, mechanism, advantages, and challenges of semiconductor photocatalysis. Further, the recent advancements in the design of heterostructure photocatalysts including alloy quantum dots based composites, carbon based composites including carbon nanotubes, carbon quantum dots, graphitic carbon nitride, and graphene, covalent-organic frameworks based composites, metal based composites including metal carbides, metal halide perovskites, metal nitrides, metal oxides, metal phosphides, and metal sulfides, metal-organic frameworks based composites, plasmonic materials based composites and single atom based composites for CO2 conversion, H2 evolution, and pollutants oxidation are discussed elaborately. Finally, perspectives for further improvement in the design of composite materials for efficient photocatalysis are provided.
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Affiliation(s)
- Muhammad Humayun
- School of Optical and Electronic Information, Wuhan National Laboratory for Optoelectronics, Engineering Research Center for Functional Ceramics of the Ministry of Education, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
| | - Chundong Wang
- School of Optical and Electronic Information, Wuhan National Laboratory for Optoelectronics, Engineering Research Center for Functional Ceramics of the Ministry of Education, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
| | - Wei Luo
- School of Optical and Electronic Information, Wuhan National Laboratory for Optoelectronics, Engineering Research Center for Functional Ceramics of the Ministry of Education, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
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31
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Application of multilayer perceptron network and random forest models for modelling the adsorption of chlorobenzene on a modified bentonite by intercalation with hexadecyltrimethyl ammonium (HDTMA). REACTION KINETICS MECHANISMS AND CATALYSIS 2022. [DOI: 10.1007/s11144-021-02121-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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32
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Fang R, Huang J, Huang X, Luo X, Sun Y, Dong F, Huang H. Reheat treatment under vacuum induces pre-calcined α-MnO 2 with oxygen vacancy as efficient catalysts for toluene oxidation. CHEMOSPHERE 2022; 289:133081. [PMID: 34843838 DOI: 10.1016/j.chemosphere.2021.133081] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 11/12/2021] [Accepted: 11/24/2021] [Indexed: 06/13/2023]
Abstract
Engineering α-MnO2 with abundant oxygen vacancies is efficient to enhance its catalytic activity towards toluene oxidation. A simple and facile method was introduced to fabricate oxygen vacancies on α-MnO2 surface by reheating the pre-calcined samples under vacuum condition. The reheat treatment especially at 180 °C is beneficial for the formation of oxygen vacancies on α-MnO2 surface, enhancing the oxidation of toluene. The toluene conversion is up to 100% at 270 °C, which is 30 °C lower than that of α-MnO2 without reheat treatment. The apparent activation energy (16.8 kJ mol-1) of MnO2-180 catalyst is lowest among these catalysts, which is essential for accelerating the oxidation of toluene. In-situ DRIFTS results indicate that the MnO2-180 sample promotes the formation of benzaldehyde and the occurrence of ring-opening reaction, thus effectively improving the catalytic performance for toluene oxidation. A possible catalytic oxidation mechanism of toluene over α-MnO2 catalysts after reheat treatment was proposed.
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Affiliation(s)
- Ruimei Fang
- College of Environment and Resources, Chongqing Technology and Business University, Chongqing, 400067, China.
| | - Jing Huang
- College of Environment and Resources, Chongqing Technology and Business University, Chongqing, 400067, China
| | - Xinyue Huang
- College of Environment and Resources, Chongqing Technology and Business University, Chongqing, 400067, China; Yangtze Delta Region Institute (Huzhou) & School of Resources and Environment, University of Electronic Science and Technology of China, Huzhou, 313000, China
| | - Xiao'ai Luo
- College of Environment and Resources, Chongqing Technology and Business University, Chongqing, 400067, China; Yangtze Delta Region Institute (Huzhou) & Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Huzhou, 313000, China
| | - Yanjuan Sun
- College of Environment and Resources, Chongqing Technology and Business University, Chongqing, 400067, China; Yangtze Delta Region Institute (Huzhou) & School of Resources and Environment, University of Electronic Science and Technology of China, Huzhou, 313000, China.
| | - Fan Dong
- College of Environment and Resources, Chongqing Technology and Business University, Chongqing, 400067, China; Yangtze Delta Region Institute (Huzhou) & Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Huzhou, 313000, China
| | - Haibao Huang
- School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou, 510006, China
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33
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Yu S, Niu X, Song Z, Huang X, Peng Y, Li J. Improvement of Al 2O 3 on the multi-pollutant control performance of NO x and chlorobenzene in vanadia-based catalysts. CHEMOSPHERE 2022; 289:133156. [PMID: 34864012 DOI: 10.1016/j.chemosphere.2021.133156] [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: 09/17/2021] [Revised: 11/23/2021] [Accepted: 12/02/2021] [Indexed: 06/13/2023]
Abstract
We compared the influences of Al2O3 and SiO2 on a traditional V2O5-MoO3/TiO2 for the simultaneous removal of NOx and chlorobenzene (CB). The Al2O3 doping catalyst considerably broadens the active temperature window with higher NOx reduction and CB oxidation efficiencies than the SiO2 doping one and the V2O5-MoO3/TiO2. Furthermore, its resistance to SO2 was preserved and the quantities of polychlorinated byproducts also decreased. The increase in activity at low temperatures could be due to the promotion of vanadia reducibility via interactions between V2O5 and Al2O3. Moreover, the high temperature activity could be due to the additional surface acidities provided by Al2O3, in which the Lewis acid sites played the predominant role in both NH3 adsorptions and CB de-chlorination compared to the Brønsted acid sites. Finally, we proposed that Al2O3 is an effective addition for vanadia-based catalyst in NOx and CB simultaneous removal from stationary sources.
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Affiliation(s)
- Shixuan Yu
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, 100084, PR China; Key Laboratory of Regional Environment and Eco-Remediation, Ministry of Education, Shenyang University, Shenyang, 110044, China
| | - Xiaowei Niu
- Key Laboratory of Regional Environment and Eco-Remediation, Ministry of Education, Shenyang University, Shenyang, 110044, China.
| | - Zijian Song
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, 100084, PR China
| | - Xu Huang
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, 100084, PR China
| | - Yue Peng
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, 100084, PR China.
| | - Junhua Li
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, 100084, PR China
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34
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Fu Y, Yin Z, Qin L, Huang D, Yi H, Liu X, Liu S, Zhang M, Li B, Li L, Wang W, Zhou X, Li Y, Zeng G, Lai C. Recent progress of noble metals with tailored features in catalytic oxidation for organic pollutants degradation. JOURNAL OF HAZARDOUS MATERIALS 2022; 422:126950. [PMID: 34449327 DOI: 10.1016/j.jhazmat.2021.126950] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 08/10/2021] [Accepted: 08/16/2021] [Indexed: 05/23/2023]
Abstract
With the increasing serious water pollutions, an increasing interest has given for the nanocomposites as environmental catalysts. To date, noble metals-based nanocomposites have been extensively studied by researchers in environmental catalysis. In detail, serving as key functional parts, noble metals are usually combined with other nanomaterials for rationally designing nanocomposites, which exhibit enhanced catalytic properties in pollutants removal. Noble metals in the nanocomposites possess tailored properties, thus playing different important roles in catalytic oxidation reactions for pollutants removal. To motivate the research and elaborate the progress of noble metals, this review (i) summarizes advanced characterization techniques and rising technology of theoretical calculation for evaluating noble metal, and (ii) classifies the roles according to their disparate mechanism in different catalytic oxidation reactions. Meanwhile, the enhanced mechanism and influence factors are discussed. (iii) The conclusions, facing challenges and perspectives are proposed for further development of noble metals-based nanocomposites as environmental catalysts.
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Affiliation(s)
- Yukui Fu
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, PR China
| | - Zhuo Yin
- Department of Urology, Second Xiangya Hospital, Central South University, Changsha 410011, PR China
| | - Lei Qin
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, PR China
| | - Danlian Huang
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, PR China
| | - Huan Yi
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, PR China
| | - Xigui Liu
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, PR China
| | - Shiyu Liu
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, PR China
| | - Mingming Zhang
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, PR China
| | - Bisheng Li
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, PR China
| | - Ling Li
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, PR China
| | - Wenjun Wang
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, PR China
| | - Xuerong Zhou
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, PR China
| | - Yixia Li
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, PR China
| | - Guangming Zeng
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, PR China; Department of Urology, Second Xiangya Hospital, Central South University, Changsha 410011, PR China.
| | - Cui Lai
- College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, PR China.
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35
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Noble-Metal-Based Catalytic Oxidation Technology Trends for Volatile Organic Compound (VOC) Removal. Catalysts 2022. [DOI: 10.3390/catal12010063] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Volatile organic compounds (VOCs) are toxic and are considered the most important sources for the formation of photochemical smog, secondary organic aerosols (SOAs), and ozone. These can also greatly affect the environment and human health. For this reason, VOCs are removed by applying various technologies or reused after recovery. Catalytic oxidation for VOCs removal is widely applied in the industry and is regarded as an efficient and economical method compared to other VOCs removal technologies. Currently, a large amount of VOCs are generated in industries with solvent-based processes, and the ratio of aromatic compounds is high. This paper covers recent catalytic developments in VOC combustion over noble-metal-based catalysts. In addition, this report introduces recent trends in the development of the catalytic mechanisms of VOC combustion and the deactivation of catalysts, such as coke formation, poisoning, sintering, and catalyst regeneration. Since VOC oxidation by noble metal catalysts depends on the support of and mixing catalysts, an appropriate catalyst should be used according to reaction characteristics. Moreover, noble metal catalysts are used together with non-noble metals and play a role in the activity of other catalysts. Therefore, further elucidation of their function and catalytic mechanism in VOC removal is required.
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36
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Duan Y, Liu P, Lin F, He Y, Zhu Y, Wang Z. Catalytic ozonation of dichloromethane at low temperature and even room temperature on Mn-loaded catalysts. RSC Adv 2022; 12:33429-33439. [PMID: 36425204 PMCID: PMC9679731 DOI: 10.1039/d2ra05828f] [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: 09/15/2022] [Accepted: 11/14/2022] [Indexed: 11/23/2022] Open
Abstract
Five Mn-loaded catalysts were synthesized on γ-Al2O3, TiO2, ZrO2, nano γ-Al2O3 and nanoZrO2 supports. The catalytic ozonation of DCM (dichloromethane) was evaluated under industrial conditions (i.e., temperature, O3 input, H2O and SO2 content). According to results, >90% DCM conversion without O3 residue was achieved for all samples at 120 °C and an O3/DCM ratio of 6. At 20–120 °C, the highest Mn3+ content, abundant surface oxygen species and more weak acid sites led to the best performance of Mn/nanoAl2O3 (M/A-II). At 20 °C and 120 °C, 80% and 95% DCM can be degraded respectively on M/A-II at 20 °C with matched surface oxygen species and acidity. An O3/DCM ratio of 6 was optimal for performance and economy. For the effects of complex exhaust, both H2O and SO2 deactivated M/A-II. The H2O-induced deactivation was recoverable and also removed surface-deposited chlorine-containing species, enhancing the HCl selectivity. Finally, the Cl equilibrium of the reaction was comprehensively analyzed. The collaboration of abundant surface oxygen species and weak acid sites at low temperatures ensures the best functioning of M/A-II.![]()
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Affiliation(s)
- Yaxin Duan
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, P. R. China
| | - Peixi Liu
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, P. R. China
| | - Fawei Lin
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, P. R. China
| | - Yong He
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, P. R. China
| | - Yanqun Zhu
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, P. R. China
| | - Zhihua Wang
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, P. R. China
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Hu D, Li W, Yin K, Huang B. Promoting effect of Ru-doped Mn/TiO2 catalysts for catalytic oxidation of chlorobenzene. NEW J CHEM 2022. [DOI: 10.1039/d2nj01070d] [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
Mn/TiO2 catalysts were synthesized using deposition-precipitation method. Ru-doped Mn/TiO2 catalysts were prepared by incipient-wetness impregnation method. To investigate the effect of Ru and Mn species, the catalytic performances of Mn/TiO2...
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38
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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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Guo H, Chen Y, Yang S, Li R, Zhang X, Dong Q, Li X, Ma X. Lignin-based adsorbent-catalyst with high capacity and stability for polychlorinated aromatics removal. BIORESOURCE TECHNOLOGY 2021; 337:125453. [PMID: 34320738 DOI: 10.1016/j.biortech.2021.125453] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2021] [Revised: 06/17/2021] [Accepted: 06/19/2021] [Indexed: 06/13/2023]
Abstract
The utilization of lignin as carbonaceous material for pollution adsorption provides an alternative way for lignocellulose valorization. Here in, lignin-based adsorbents (i.e., LC-A, LC-B, and LC-C) were prepared and used for the removal of o-DCB (a toxic gaseous pollutant). LC-B exhibited the best adsorption capacity (718.2 mg/g) when comparing with LC-A (93.1 mg/g), LC-C (10.2 mg/g), and activated carbon (72.7 mg/g). LC-B also demonstrated excellent recycling stability with the adsorption capacity of 710.8 mg/g after five runs. More importantly, LC-B supported Ru adsorbent catalyst could effectively remove o-DCB with removal rate >80% under a wide range of temperature (50-300°C). The excellent performance of lignin-based adsorbents could be attributed to its abundant pore structure, high specific surface area (1618.55 m2/g), enhanced graphitization degree as well as the abundant hydroxyl functional groups. The present work provided a cost-effective strategy for pollution control by lignin-based material.
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Affiliation(s)
- Haiwei Guo
- School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China.
| | - Yifeng Chen
- School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China
| | - Shuai Yang
- School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China
| | - Ruiling Li
- School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China
| | - Xinyi Zhang
- School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China
| | - Qixuan Dong
- School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China
| | - Xinyang Li
- School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China
| | - Xiaodong Ma
- School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China
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41
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Ying Q, Liu Y, Li H, Zhang Y, Wu Z. A comparative study of the dichloromethane catalytic combustion over ruthenium-based catalysts: Unveiling the roles of acid types in dissociative adsorption and by-products formation. J Colloid Interface Sci 2021; 605:537-546. [PMID: 34340038 DOI: 10.1016/j.jcis.2021.07.095] [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: 06/14/2021] [Revised: 07/14/2021] [Accepted: 07/18/2021] [Indexed: 01/19/2023]
Abstract
Herein, a comparative investigation of the Ru-based catalysts with different kinds of supports (TiO2, Al2O3, HZSM-5 SiO2/Al2O3 = 27 and 130, respectively) for catalytic combustion of dichloromethane (DCM) has been performed. The characterization results showed that the C-Cl bond of DCM was cleaved on both the Brønsted and Lewis acid sites of the catalysts. However, the Lewis acid sites were more active than the Brønsted acid sites. The relatively strong Lewis acidity of Ru/TiO2 improved the dissociative adsorption of DCM, accounting for its superior activity. The yield of toxic by-products was strongly associated with the acid types of the catalysts. The Cl species deposited on TiO2 and Al2O3 supports interacted strongly with the Lewis acid sites, thereby promoting the electrophilic chlorination reactions and yielding more polychlorinated by-products, especially highly toxic dibenzo-p-dioxins and dibenzofurans (PCDD/Fs). However, the Cl deposits on Ru/HZSM-5 (SiO2/Al2O3 = 27) with abundant Brønsted acid sites, mainly existed as hydrogen-bonded Cl species, with good mobility and less propensity for chlorinating carbonaceous matter. Moreover, Ru/HZSM-5 (SiO2/Al2O3 = 130) yielded the highest polychlorinated by-products and PCDD/Fs because of its poor redox ability and high surface area. Overall, this study provides valuable insights into the CVOCs catalytic combustion catalysts development.
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Affiliation(s)
- Qingji Ying
- Department of Environmental Engineering, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, PR China
| | - Yue Liu
- Department of Environmental Engineering, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, PR China.
| | - Haoyang Li
- Department of Environmental Engineering, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, PR China
| | - Yaoyu Zhang
- Department of Environmental Engineering, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, PR China
| | - Zhongbiao Wu
- Department of Environmental Engineering, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, PR China; Zhejiang Provincial Engineering Research Center of Industrial Boiler & Furnace Flue Gas Pollution Control, 866 Yuhangtang Road, Hangzhou 310058, PR China
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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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43
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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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Wang L, Li G, Wu P, Shen K, Zhang Y, Zhang S, Xiao R. Promoting effect of Pd modification on the M/TiO2 (M = V, Ce, Mn) catalyst for catalytic oxidation of dichloromethane (DCM). Chem Eng Sci 2021. [DOI: 10.1016/j.ces.2020.116405] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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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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Feng X, Luo F, Chen Y, Lin D, Luo Y, Xiao L, Liu X, Sun X, Qian Q, Chen Q. Boosting total oxidation of propane over CeO 2@Co 3O 4 nanofiber catalysts prepared by multifluidic coaxial electrospinning with continuous grain boundary and fast lattice oxygen mobility. JOURNAL OF HAZARDOUS MATERIALS 2021; 406:124695. [PMID: 33310339 DOI: 10.1016/j.jhazmat.2020.124695] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2020] [Revised: 11/14/2020] [Accepted: 11/25/2020] [Indexed: 06/12/2023]
Abstract
A one-dimensional (1D) core-shell of Co-Ce oxide has been prepared by multifluidic coaxial electrospinning method and evaluated for the total oxidation of propane (C3H8). Activity and morphological characterizations show that the CeO2@Co3O4 nanofiber catalyst, of which the core is CeO2 and the shell is Co3O4, exhibits excellent oxidation activity. The exposed Co3O4 grown on the outside of the fibers can rapidly react with C3H8 while CeO2 with high oxygen storage capacity in the inside is conductive to the enhanced oxidation rate. Besides, the continuous grain boundary provides a fast mass transfer channel for lattice oxygen, and rich oxygen vacancies favor the mobility of active oxygen species. In situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTs) confirms that the CeO2@Co3O4 catalyst have a faster rate of C3H8 adsorption and better oxidation activity with respect to the counterpart using a single-needle electrospinning method. Moreover, the CeO2@Co3O4 catalyst displays excellent thermal stability, and strong resistance against 5 vol% H2O and 5 vol% CO2 at both 300 and 400 °C. Our strategy can give some new insights into morphological engineering to promote active oxygen mobility via the construction of one-dimensional core-shell of metal oxides for catalytic oxidation of VOCs.
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Affiliation(s)
- Xiaoshan Feng
- Digital Fujian Internet-of-Things Laboratory of Environmental Monitoring, Fujian Normal University, Fuzhou 350007, China
| | - Fenqiang Luo
- Digital Fujian Internet-of-Things Laboratory of Environmental Monitoring, Fujian Normal University, Fuzhou 350007, China
| | - Yinye Chen
- Digital Fujian Internet-of-Things Laboratory of Environmental Monitoring, Fujian Normal University, Fuzhou 350007, China
| | - Daifeng Lin
- Digital Fujian Internet-of-Things Laboratory of Environmental Monitoring, Fujian Normal University, Fuzhou 350007, China
| | - Yongjin Luo
- Digital Fujian Internet-of-Things Laboratory of Environmental Monitoring, Fujian Normal University, Fuzhou 350007, China.
| | - Liren Xiao
- Digital Fujian Internet-of-Things Laboratory of Environmental Monitoring, Fujian Normal University, Fuzhou 350007, China
| | - Xinping Liu
- Digital Fujian Internet-of-Things Laboratory of Environmental Monitoring, Fujian Normal University, Fuzhou 350007, China
| | - Xiaoli Sun
- Digital Fujian Internet-of-Things Laboratory of Environmental Monitoring, Fujian Normal University, Fuzhou 350007, China
| | - Qingrong Qian
- Digital Fujian Internet-of-Things Laboratory of Environmental Monitoring, Fujian Normal University, Fuzhou 350007, China
| | - Qinghua Chen
- Digital Fujian Internet-of-Things Laboratory of Environmental Monitoring, Fujian Normal University, Fuzhou 350007, China; Fuqing Branch of Fujian Normal University, Fuqing 350300, China.
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47
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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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48
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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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49
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Zeng Y, Haw KG, Wang Z, Wang Y, Zhang S, Hongmanorom P, Zhong Q, Kawi S. Double redox process to synthesize CuO-CeO 2 catalysts with strong Cu-Ce interaction for efficient toluene oxidation. JOURNAL OF HAZARDOUS MATERIALS 2021; 404:124088. [PMID: 33053474 DOI: 10.1016/j.jhazmat.2020.124088] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2020] [Revised: 09/06/2020] [Accepted: 09/22/2020] [Indexed: 06/11/2023]
Abstract
In this study, a novel double redox (DR) method was developed to synthesize highly active CuO-CeO2 (CuCe-DR) catalyst for catalytic oxidative decomposition of toluene. Compare with CuCe-C catalyst prepared by co-precipitation method, CuCe-DR catalyst exhibits a higher Ce3+ ion and incorporated Cu2+ ion concentration, and has a stronger Cu-Ce interaction. Ce3+ and incorporated Cu2+ ions can induce the formation of oxygen vacancies, and thus increasing the amount of surface chemisorbed oxygen on CuCe-DR catalyst. The strong Cu-Ce interaction can promote the electron transfer between CuO and CeO2, which improves the redox properties of CuCe-DR catalyst. Although CuCe-DR catalyst has a lower toluene adsorption capacity, CuCe-DR exhibits much higher toluene oxidation performance than CuCe-C at the temperature below 300 °C. Moreover, CuCe-DR shows higher stability than CuCe-C during 100 h long-term test due to its high oxygen mobility which inhibits coking. Finally, the possible reaction pathways and promotional mechanism on CuCe-DR in toluene oxidation are proposed. We expect this study to shed more light on the nature of the surface active site(s) of CuCe catalyst for VOCs oxidation and the development of novel redox preparation method for the synthesis highly-active catalysts.
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Affiliation(s)
- Yiqing Zeng
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, PR China; Department of Chemica`l and Biomolecular Engineering, National University of Singapore 117576 Singapore
| | - Kok-Giap Haw
- Department of Chemica`l and Biomolecular Engineering, National University of Singapore 117576 Singapore
| | - Zhigang Wang
- Department of Chemica`l and Biomolecular Engineering, National University of Singapore 117576 Singapore
| | - Yanan Wang
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, PR China
| | - Shule Zhang
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, PR China.
| | - Plaifa Hongmanorom
- Department of Chemica`l and Biomolecular Engineering, National University of Singapore 117576 Singapore
| | - Qin Zhong
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, PR China.
| | - Sibudjing Kawi
- Department of Chemica`l and Biomolecular Engineering, National University of Singapore 117576 Singapore.
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Li N, Xing X, Cheng J, Zhang Z, Hao Z. Influence of oxygen and water content on the formation of polychlorinated organic by-products from catalytic degradation of 1,2-dichlorobenzene over a Pd/ZSM-5 catalyst. JOURNAL OF HAZARDOUS MATERIALS 2021; 403:123952. [PMID: 33264996 DOI: 10.1016/j.jhazmat.2020.123952] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 08/30/2020] [Accepted: 09/03/2020] [Indexed: 06/12/2023]
Abstract
Understanding the generation and influence mechanism of polychlorinated organic by-products during the catalytic degradation of chlorinated volatile organic compounds (CVOCs) is essential to the safe and environmentally friendly treatment of those pollutants. In this study, a systematic investigation of the catalytic oxidation of 1,2-dichlorobenzene (1,2-DCB) was conducted using various oxygen and water contents over a Pd/ZSM-5(25) catalyst. It was found that decreasing the oxygen content and increasing the water content resulted in the improvement of the 1,2-DCB catalytic activity, while the amount and variety of polychlorinated organic by-products decreased. More importantly, when water was the sole oxidant, the Pd/ZSM-5(25) catalyst also demonstrated high activity towards 1,2-DCB catalytic degradation. Only chlorobenzene and 1,3-dichlorobenzene were detected as by-products. X-ray photoelectron spectra (XPS) and UV-vis DRS spectra results indicated that the polychlorinated organic by-products were suppressed mainly due to inhibition of the chlorination of the palladium species by regulating the oxygen and water content in the reaction atmosphere. Similar surface species were formed under aerobic and anaerobic atmospheres via the study of the in situ FTIR spectra. We therefore proposed that 1,2-DCB undergoes similar catalytic degradation reaction mechanisms under both aerobic and anaerobic conditions.
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Affiliation(s)
- Na Li
- National Engineering Laboratory for VOCs Pollution Control Material & Technology, Research Center for Environmental Material and Pollution Control Technology, University of Chinese Academy of Sciences, Beijing 101408, PR China; Key Laboratory of Environmental Nanotechnology and Health Effects, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, PR China
| | - Xin Xing
- National Engineering Laboratory for VOCs Pollution Control Material & Technology, Research Center for Environmental Material and Pollution Control Technology, University of Chinese Academy of Sciences, Beijing 101408, PR China; Key Laboratory of Environmental Nanotechnology and Health Effects, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, PR China
| | - Jie Cheng
- National Engineering Laboratory for VOCs Pollution Control Material & Technology, Research Center for Environmental Material and Pollution Control Technology, University of Chinese Academy of Sciences, Beijing 101408, PR China.
| | - Zhongshen Zhang
- National Engineering Laboratory for VOCs Pollution Control Material & Technology, Research Center for Environmental Material and Pollution Control Technology, University of Chinese Academy of Sciences, Beijing 101408, PR China
| | - Zhengping Hao
- National Engineering Laboratory for VOCs Pollution Control Material & Technology, Research Center for Environmental Material and Pollution Control Technology, University of Chinese Academy of Sciences, Beijing 101408, PR China; Key Laboratory of Environmental Nanotechnology and Health Effects, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, PR China
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