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Wang J, Dong F, Tang Z, Niu L, Zhao X. Insights into the Electronic Structure Effect of SnMnO x Nanorod Catalysts for Low-Temperature Catalytic Combustion of o-Dichlorobenzene. Chem Asian J 2023; 18:e202300413. [PMID: 37358431 DOI: 10.1002/asia.202300413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 06/26/2023] [Accepted: 06/26/2023] [Indexed: 06/27/2023]
Abstract
For the catalytic combustion reaction of chlorinated volatile organic compounds (CVOCs), the redox properties and acid sites of the catalyst surface are key factors in determining the activity, selectivity, and chlorine-resistance stability. Herein, a series of SnMnOx catalysts for the catalytic combustion of CVOCs were prepared by the changing of Sn-doping way to regulate the electron valance state of Mn element, including reflux (R-SnMnOx ), co-precipitation (C-SnMnOx ) and impregnation (I-SnMnOx ). It was discovered that the R-SnMnOx catalyst had better activity and chlorine resistance than the R-MnOx , C-SnMnOx and I-SnMnOx catalyst, and we discovered that the doping ways of Sn in MnOx catalyst could regulate greatly the surface acidity, active oxygen species, the chemical state of Mnn+ species, and redox ability. Especially, the R-SnMnOx catalysts exhibit excellent water resistance, and the reasons were related to the strong interaction of Snn+ and Mnn+ , which could promote obviously the dispersion of active Mn species, form a large number of acid sites, provide the abundant lattice oxygen species, and own the excellent redox ability, which accelerate the rate of charge transfer between Snn+ and Mnn+ (Sn4+ +Mn2+ →Sn2+ +Mn4+ ) to produce the abundant active species and accelerate the rapid conversion of benzene and intermediates conversion.
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Affiliation(s)
- Jie Wang
- School of Petroleum and Chemical, Lanzhou University of Technology, Lanzhou, 730050, P. R. China
- 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
| | - Fang Dong
- 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
| | - Lei Niu
- School of Petroleum and Chemical, Lanzhou University of Technology, Lanzhou, 730050, P. R. China
| | - Xia Zhao
- School of Petroleum and Chemical, Lanzhou University of Technology, Lanzhou, 730050, P. R. China
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2
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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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3
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Fan M, Zou Q, Liu J, Chen Y, Zhu J, Shen S. Enhanced catalytic oxidation of dichloromethane by a surfactant-modified CeO2@TiO2 core–shell nanostructured catalyst. J RARE EARTH 2022. [DOI: 10.1016/j.jre.2022.06.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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4
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Li Y, Chen J, Hu Z, Lv X, Jia H. A Facile Method to Synthesize Co
3
O
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Catalyst for Efficient Chlorobenzene Combustion. ChemistrySelect 2022. [DOI: 10.1002/slct.202200481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yan Li
- College of Chemistry Fuzhou University Fuzhou Fujian 350106 P. R. China
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures and Fujian Provincial Key Laboratory of Nanomaterials Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou Fujian 350002 P. R. China
- Xiamen Institute of Rare-earth Materials Haixi Institutes Chinese Academy of Sciences Xiamen Fujian 361021 P. R. China
| | - Jing Chen
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures and Fujian Provincial Key Laboratory of Nanomaterials Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou Fujian 350002 P. R. China
- Xiamen Institute of Rare-earth Materials Haixi Institutes Chinese Academy of Sciences Xiamen Fujian 361021 P. R. China
| | - Ziying Hu
- College of Chemistry Fuzhou University Fuzhou Fujian 350106 P. R. China
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures and Fujian Provincial Key Laboratory of Nanomaterials Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou Fujian 350002 P. R. China
- Xiamen Institute of Rare-earth Materials Haixi Institutes Chinese Academy of Sciences Xiamen Fujian 361021 P. R. China
| | - Xue‐Long Lv
- Institute of Urban Environment Chinese Academy of Sciences Xiamen Fujian 361021 P. R. China
- University of Chinese Academy of Sciences P. R. China
| | - Hongpeng Jia
- Institute of Urban Environment Chinese Academy of Sciences Xiamen Fujian 361021 P. R. China
- University of Chinese Academy of Sciences P. R. China
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5
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Synthesis of manganese ore/Co3O4 composites by sol–gel method for the catalytic oxidation of gaseous chlorobenzene. JOURNAL OF SAUDI CHEMICAL SOCIETY 2021. [DOI: 10.1016/j.jscs.2021.101229] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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6
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Wang Q, Huang X, Feng Y, Zhou J, Shi H, Jin J. Interaction Mechanism Study on Simultaneous Removal of 1,2-Dichlorobenzene and NO over MnO x–CeO 2/TiO 2 Catalysts at Low Temperatures. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.0c05862] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Qiulin Wang
- School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
- Huzhou Institute of Zhejiang University, Huzhou 313000, China
| | - Xiaoniu Huang
- School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Yuheng Feng
- Thermal and Environmental Engineering Institute, Tongji University, Shanghai 200092, China
| | - Jianjian Zhou
- School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Huancong Shi
- Huzhou Institute of Zhejiang University, Huzhou 313000, China
| | - Jing Jin
- School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
- Huzhou Institute of Zhejiang University, Huzhou 313000, China
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7
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Huang Q, Xu G, Zhang K, Zhu J, Si H, Yang B, Tao T, Zhao Y, Chen M, Yang H. Improved Activity and Stability of Chlorobenzene Oxidation Over Transition Metal-Substituted Spinel-Type Catalysts Supported on Cordierite. Catal Letters 2021. [DOI: 10.1007/s10562-020-03494-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Huang Q, Si H, Yu S, Wang J, Tao T, Yang B, Zhao Y, Chen M. Fabrication of MnO x-CeO 2/cordierite catalysts doped with FeO x and CuO for preferable catalytic oxidation of chlorobenzene. ENVIRONMENTAL TECHNOLOGY 2020; 41:1664-1676. [PMID: 30379618 DOI: 10.1080/09593330.2018.1543359] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Accepted: 10/28/2018] [Indexed: 06/08/2023]
Abstract
A series of MnOx-CeO2 catalysts with MOx doping (M = Cu, Fe, Co and La) supported on cordierite were synthesized by the citric acid complex method, showing preferable catalytic oxidation of chlorobenzene. The distribution of active oxides, surface areas, as well as the structural morphology of M-MnOx-CeO2 catalysts varied with the different Mn/Ce and M/Mn molar ratios. Meanwhile, physicochemical properties of these catalysts were characterized by XRD, BET, SEM, TEM, H2-TPR and IR. More importantly, the catalytic oxidation routes were also investigated where the process was from chlorobenzene to CO2, H2O, HCl and other by-products for the FeOx-MnOx-CeO2 and CuO-MnOx-CeO2 catalysts. The CuO-MnOx-CeO2 catalysts showed a higher chlorobenzene conversion, and the measured light-off temperature T90 was approximately 400°C. However, a large amount of chloropropane as main by-products was observed. For the FeOx-MnOx-CeO2 catalysts, more carbon monoxide could be found with inadequate oxidation. Comparative analyses of two catalysts indicated that the main cause of the oxidation activities and mechanisms were different in the oxidation capacity and water absorbability of FeOx and CuO. Nevertheless, all of these catalysts did not exhibit any deactivation due to chloride with a high reaction temperature, with chloride transformed to form HCl in the off-gas stream.
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Affiliation(s)
- 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, Nanjing, People's Republic of China
| | - Han Si
- 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, Nanjing, People's Republic of China
| | - Shukun Yu
- 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, Nanjing, People's Republic of China
| | - Jiaxiao Wang
- 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, Nanjing, People's Republic of 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, Nanjing, People's Republic of 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, Nanjing, People's Republic of China
| | - Yunxia Zhao
- 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, Nanjing, People's Republic of 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, Nanjing, People's Republic of China
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9
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Oxidative Degradation of Trichloroethylene over Fe2O3-doped Mayenite: Chlorine Poisoning Mitigation and Improved Catalytic Performance. Catalysts 2019. [DOI: 10.3390/catal9090747] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Mayenite was recently successfully employed as an active catalyst for trichloroethylene (TCE) oxidation. It was effective in promoting the conversion of TCE in less harmful products (CO2 and HCl) with high activity and selectivity. However, there is a potential limitation to the use of mayenite in the industrial degradation of chlorinated compounds—its limited operating lifespan owing to chlorine poisoning of the catalyst. To overcome this problem, in this work, mayenite-based catalysts loaded with iron (Fe/mayenite) were prepared and tested for TCE oxidation in a gaseous phase. The catalysts were characterized using different physico-chemical techniques, including XRD, ICP, N2-sorption (BET), H2-TPR analysis, SEM-EDX, XPS FESEM-EDS, and Raman. Fe/mayenite was found to be more active and stable than the pure material for TCE oxidation, maintaining the same selectivity. This result was interpreted as the synergistic effect of the metal and the oxo-anionic species present in the mayenite framework, thus promoting TCE oxidation, while avoiding catalyst deactivation.
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10
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Yang Y, Li H, Zhao H, Qu R, Zhang S, Hu W, Yu X, Zhu X, Liu S, Zheng C, Gao X. Structure and crystal phase transition effect of Sn doping on anatase TiO 2 for dichloromethane decomposition. JOURNAL OF HAZARDOUS MATERIALS 2019; 371:156-164. [PMID: 30849570 DOI: 10.1016/j.jhazmat.2019.02.103] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2018] [Revised: 01/22/2019] [Accepted: 02/27/2019] [Indexed: 06/09/2023]
Abstract
Efficient removal of chlorinated volatile organic compounds (CVOCs) has received great attention because of the considerable harm that they cause to the environment and to human health. Developing novel catalysts and exploring the catalytic activation and deconstruction mechanism of CVOCs molecule are always the focus in this field. Here, a set of Sn doped TiO2 catalysts were investigated for the decomposition of dichloromethane (DCM). Rietveld refinement of the XRD patterns showed that Sn ions can uniformly disperse into TiO2 and induce the crystal transition of anatase. Meanwhile, such decorating can induce an increase in specific surface area and affect the surface oxygen vacancy concentration of these samples, which have been demonstrated by N2 adsorption and XPS, respectively. Catalytic performance tests indicated that the Sn0.2Ti0.8O2 has the best activity for DCM decomposition, and a lower CH3Cl selectivity than that of pure TiO2. Computational results suggested the dominant surface (110) of rutile Sn0.2Ti0.8O2 is more beneficial for the adsorption/dissociation of DCM molecule than that of anatase TiO2 (101). That's because the anchoring of DCM to Sn sites and electron enrichment on the surface bridge oxygen atoms of rutile Sn0.2Ti0.8O2 (110) can promote the nucleophilic substitution process for breaking of CCl bonds.
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Affiliation(s)
- Yang Yang
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou, 310027, China
| | - Hao Li
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou, 310027, China
| | - Haitao Zhao
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou, 310027, China
| | - Ruiyang Qu
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou, 310027, China
| | - Shuo Zhang
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou, 310027, China
| | - Wenshuo Hu
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou, 310027, China
| | - Xinning Yu
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou, 310027, China
| | - Xinbo Zhu
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou, 310027, China
| | - Shaojun Liu
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou, 310027, China; School of Energy and Power, Jiangsu University of Science and Technology, Zhenjiang, 212003, China.
| | - Chenghang Zheng
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou, 310027, China
| | - Xiang Gao
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou, 310027, China.
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11
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He C, Cheng J, Zhang X, Douthwaite M, Pattisson S, Hao Z. Recent Advances in the Catalytic Oxidation of Volatile Organic Compounds: A Review Based on Pollutant Sorts and Sources. Chem Rev 2019; 119:4471-4568. [DOI: 10.1021/acs.chemrev.8b00408] [Citation(s) in RCA: 769] [Impact Index Per Article: 153.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Chi He
- National Engineering Laboratory for VOCs Pollution Control Material & Technology, University of Chinese Academy of Sciences, Beijing 101408, P.R. China
- Department of Environmental Science and Engineering, State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, P.R. China
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, U.K
| | - Jie Cheng
- National Engineering Laboratory for VOCs Pollution Control Material & Technology, University of Chinese Academy of Sciences, Beijing 101408, P.R. China
| | - Xin Zhang
- National Engineering Laboratory for VOCs Pollution Control Material & Technology, University of Chinese Academy of Sciences, Beijing 101408, P.R. China
| | - Mark Douthwaite
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, U.K
| | - Samuel Pattisson
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, U.K
| | - Zhengping Hao
- National Engineering Laboratory for VOCs Pollution Control Material & Technology, University of Chinese Academy of Sciences, Beijing 101408, P.R. China
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12
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Dai C, Zhou Y, Peng H, Huang S, Qin P, Zhang J, Yang Y, Luo L, Zhang X. Current progress in remediation of chlorinated volatile organic compounds: A review. J IND ENG CHEM 2018. [DOI: 10.1016/j.jiec.2017.12.049] [Citation(s) in RCA: 75] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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13
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Zhu X, Zhang S, Yu X, Zhu X, Zheng C, Gao X, Luo Z, Cen K. Controllable synthesis of hierarchical MnO x/TiO 2 composite nanofibers for complete oxidation of low-concentration acetone. JOURNAL OF HAZARDOUS MATERIALS 2017; 337:105-114. [PMID: 28511042 DOI: 10.1016/j.jhazmat.2017.03.053] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Revised: 03/19/2017] [Accepted: 03/24/2017] [Indexed: 06/07/2023]
Abstract
A novel hierarchical MnOx/TiO2 composite nanofiber was fabricated by combining the electrospinning technique and hydrothermal growth method. The synthesized nanomaterial, which comprised primary TiO2 nanofibers and secondary MnOx nanoneedles, was further investigated for complete catalytic oxidation of volatile organic compounds for the first time, and this presented high-oxidation performance on low-concentration acetone. The morphological, structural, physicochemical characterization, and catalytic performance analyses demonstrated that the highest catalytic activity was achieved from the obtained MnOx/TiO2 nanofiber catalyst with 30wt.% manganese loading. This finding can be ascribed to the synergistic effect of the specific hierarchical nanofibrous morphology, the abundant surface-adsorbed oxygen, the superior redox property, and the sufficient specific surface.
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Affiliation(s)
- Xuecheng Zhu
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, Zhejiang, China
| | - Shuo Zhang
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, Zhejiang, China
| | - Xinning Yu
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, Zhejiang, China
| | - Xinbo Zhu
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, Zhejiang, China
| | - Chenghang Zheng
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, Zhejiang, China
| | - Xiang Gao
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, Zhejiang, China.
| | - Zhongyang Luo
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, Zhejiang, China
| | - Kefa Cen
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, Zhejiang, China
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Wan Y, Xie X, Chen X. Catalytic Combustion of Vinyl Chloride Emission over a TiO2–MnOx Catalyst. PROGRESS IN REACTION KINETICS AND MECHANISM 2017. [DOI: 10.3184/146867817x14821527549257] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
TiO2–MnO x catalyst samples with different Ti/(Ti + Mn) molar ratios (2:3, 3:4, 4:5, 5:6, 6:7 and 1) prepared by the citric acid (CA) sol-gel method were studied in the catalytic combustion of vinyl chloride (VC) emission. The effects of preparation conditions and operation parameters on the catalytic performance of TiO2–MnO x were investigated. The catalyst samples were characterised by N2 adsorption, X-ray diffraction (XRD) and H2-temperature programmed reduction (H2-TPR). In the catalytic combustion of VC over TiO2–MnO x, products containing HCl, CO2, and H2O were obtained and there were no by-products such as chlorohydrocarbons and chlorine. The TiO2–MnO x catalyst with the molar ratio of CA/Mn/Ti = 0.30:0.20:0.80 showed the best catalytic performance and had better operating flexibility over the ranges of gas hourly space velocity (GHSV) of 15000–100000 h−1 and VC concentration of 0.05–2.00%. The temperatures at 50% conversion (140 °C) and at 99% conversion (220 °C) were achieved at a VC concentration of 0.1% and GHSV of 15000 h−1. XRD characterisation indicated that only the characteristic diffraction peaks of TiO2 with the anatase structure appeared and no characteristic diffraction peaks of MnO x species appeared for the TiO2–MnO x catalyst. XRD and H2-TPR results indicated that Mn ions were incorporated into the TiO2 lattice to form a Ti–Mn–O solid solution, which enhanced the reactivity of active oxygen species on the catalyst surface and thereby promoted the catalyst activity.
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Affiliation(s)
- Yiling Wan
- College of Sciences, Guangdong Ocean University, Guangdong Zhanjiang 524088, P.R. China
| | - Xiangyu Xie
- College of Sciences, Guangdong Ocean University, Guangdong Zhanjiang 524088, P.R. China
| | - Xiaojun Chen
- Dongguan Renkang Hospital, Guangdong Dongguan 523952, P.R. China
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Wang T, Zhang X, Liu H, Guo Y, Zhang Y, Wang Y, Sun B. A Comparison of NO Reduction Over Mn–Cu/ZSM5 and Mn–Cu/MWCNTs Catalysts Assisted by Plasma at Ambient Temperature. CATALYSIS SURVEYS FROM ASIA 2017. [DOI: 10.1007/s10563-017-9228-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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16
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Zhao R, Jin D, Yang H, Lu S, Potter PM, Du C, Peng Y, Li X, Yan J. Low-Temperature Catalytic Decomposition of 130 Tetra- to Octa-PCDD/Fs Congeners over CuO X and MnO X Modified V 2O 5/TiO 2-CNTs with the Assistance of O 3. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2016; 50:11424-11432. [PMID: 27668311 DOI: 10.1021/acs.est.6b02977] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
In this study, a reliable and steady PCDD/F generation system was utilized to investigate the performance of catalysts, in which 130 congeners of tetra- to octapolychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) vapors were studied under simulated flue gas with/without O3. TiO2 and carbon nanotubes (CNTs) supported vanadium oxides (VOX/TiO2-CNTs) modified with MnOX and CuOX, which were reported to be beneficial to the decomposition of model molecules, were found to have a negative effect on the removal of real PCDD/Fs in the simulated flue gas without O3. Moreover, the addition of MnOX presented different effects depending on whether CuOX existed in catalysts or not, which was also contrary to its effects on the degradation of model molecules. In an O3-containing atmosphere, low chlorination level PCDD/Fs congeners were removed well over VOX-MnOX/TiO2-CNTs, while high chlorination level PCDD/Fs congeners were removed well over VOX-CuOX/TiO2-CNTs. Fortunately, all PCDD/Fs congeners decomposed well over VOX-MnOX-CuOX/TiO2-CNTs. Finally, the effects of tetra- to octachlorination level for the adsorption and degradation behaviors of PCDD/Fs congeners were also investigated.
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Affiliation(s)
| | | | | | | | - Phillip M Potter
- Department of Chemistry, Louisiana State University , Baton Rouge, Louisiana 70803, United States of America
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Yu MF, Li WW, Li XD, Lin XQ, Chen T, Yan JH. Development of new transition metal oxide catalysts for the destruction of PCDD/Fs. CHEMOSPHERE 2016; 156:383-391. [PMID: 27186687 DOI: 10.1016/j.chemosphere.2016.05.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Revised: 03/19/2016] [Accepted: 05/03/2016] [Indexed: 06/05/2023]
Abstract
Various transition metal oxide and vanadium-containing multi-metallic oxide catalysts were developed for the destruction of PCDD/Fs (polychlorinated dibenzo-p-dioxins and furans). A stable PCDD/Fs generating system was installed to support the catalytic destruction tests in this study. Nano-titania supported vanadium catalyst (VOx/TiO2) showed the highest activity, followed by CeOx, MnOx, WOx and finally MoOx. Multi-metallic oxide catalysts, prepared by doping WOx, MoOx, MnOx and CeOx into VOx/TiO2 catalysts, showed different activities on the decomposition of PCDD/Fs. The highest destruction efficiency of 92.5% was observed from the destruction test over VOxCeOx/TiO2 catalyst. However, the addition of WOx and MoOx even played a negative role in multi-metallic VOx/TiO2 catalysts. Characterizations of transition metal oxides and multi-metallic VOx/TiO2 catalysts were also investigated with XRD and TPR. After the catalysts were used, the conversion from high valent metals to low valence states was observed by XPS.
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Affiliation(s)
- Ming-Feng Yu
- State Key Laboratory of Clean Energy Utilization, Institute for Thermal Power Engineering, Zhejiang University, Hangzhou, 310027, PR China.
| | - Wen-Wei Li
- State Key Laboratory of Clean Energy Utilization, Institute for Thermal Power Engineering, Zhejiang University, Hangzhou, 310027, PR China
| | - Xiao-Dong Li
- State Key Laboratory of Clean Energy Utilization, Institute for Thermal Power Engineering, Zhejiang University, Hangzhou, 310027, PR China.
| | - Xiao-Qing Lin
- State Key Laboratory of Clean Energy Utilization, Institute for Thermal Power Engineering, Zhejiang University, Hangzhou, 310027, PR China
| | - Tong Chen
- State Key Laboratory of Clean Energy Utilization, Institute for Thermal Power Engineering, Zhejiang University, Hangzhou, 310027, PR China
| | - Jian-Hua Yan
- State Key Laboratory of Clean Energy Utilization, Institute for Thermal Power Engineering, Zhejiang University, Hangzhou, 310027, PR China
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Mandal S, Maity S, Saha S, Banerjee B. MnOx supported on a TiO2@SBA-15 nanoreactor used as an efficient catalyst for one-pot synthesis of imine by oxidative coupling of benzyl alcohol and aniline under atmospheric air. RSC Adv 2016. [DOI: 10.1039/c6ra14941c] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Mesoporous silica (SBA-15) encapsulated TiO2 nanoreactor used as support for MnOx and it (MnOx/TiO2@SBA-15) acts as catalyst for the one-pot synthesis of imine by oxidative coupling between benzyl alcohol & aniline in the presence of atmospheric air.
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Affiliation(s)
- Sandip Mandal
- Research Group of Gasification and Liquefaction
- CSIR – Central Institute of Mining and Fuel Research (DC)
- Dhanbad-828108
- India
| | - Sudip Maity
- Research Group of Gasification and Liquefaction
- CSIR – Central Institute of Mining and Fuel Research (DC)
- Dhanbad-828108
- India
| | - Sujan Saha
- Research Group of Gasification and Liquefaction
- CSIR – Central Institute of Mining and Fuel Research (DC)
- Dhanbad-828108
- India
| | - Biplab Banerjee
- Department of Material Science
- Indian Association for Cultivation of Science
- Kolkata-700032
- India
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Jin D, Ren Z, Ma Z, liu F, Yang H. Low temperature chlorobenzene catalytic oxidation over MnOx/CNTs with the assistance of ozone. RSC Adv 2015. [DOI: 10.1039/c4ra16687f] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
O3 promotes chlorobenzene catalytic oxidation over p-type MnOx/CNTs between 80–240 °C. A CB complete oxidation of 95% is achieved below 120 °C. The reaction follows the L–H mechanism with apparent activation energy of 15.0 kJ mol−1.
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Affiliation(s)
- Dongdong Jin
- State Key Laboratory of Silicon Materials
- Department of Materials Science and Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Zhiyuan Ren
- Foreign Economic Cooperation Office
- Ministry of Environmental Protection China
- Beijing 100035
- China
| | - Zhaoxia Ma
- State Key Laboratory of Silicon Materials
- Department of Materials Science and Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Fu liu
- State Key Laboratory of Silicon Materials
- Department of Materials Science and Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Hangsheng Yang
- State Key Laboratory of Silicon Materials
- Department of Materials Science and Engineering
- Zhejiang University
- Hangzhou 310027
- China
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Mao D, He F, Zhao P, Liu S. Enhancement of resistance to chlorine poisoning of Sn-modified MnCeLa catalysts for chlorobenzene oxidation at low temperature. RSC Adv 2015. [DOI: 10.1039/c4ra15059g] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The Sn-modified MnCeLa catalysts show significantly higher resistance to chlorine poisoning than MnCeLa catalysts at different temperatures.
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Affiliation(s)
- Dou Mao
- Key Laboratory for Green Chemical Process of Ministry of Education
- School of Chemistry and Environmental Engineering
- Wuhan Institute of Technology
- Wuhan 430074
- China
| | - Fei He
- Key Laboratory for Green Chemical Process of Ministry of Education
- School of Chemistry and Environmental Engineering
- Wuhan Institute of Technology
- Wuhan 430074
- China
| | - Pei Zhao
- Key Laboratory for Green Chemical Process of Ministry of Education
- School of Chemistry and Environmental Engineering
- Wuhan Institute of Technology
- Wuhan 430074
- China
| | - Shantang Liu
- Key Laboratory for Green Chemical Process of Ministry of Education
- School of Chemistry and Environmental Engineering
- Wuhan Institute of Technology
- Wuhan 430074
- China
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Lee HK, Sakemi D, Selyanchyn R, Lee CG, Lee SW. Titania nanocoating on MnCO3 microspheres via liquid-phase deposition for fabrication of template-assisted core-shell- and hollow-structured composites. ACS APPLIED MATERIALS & INTERFACES 2014; 6:57-64. [PMID: 24320871 DOI: 10.1021/am404052p] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A novel class of core-shell- and hollow-structured MnCO3/TiO2 composites was synthesized by titania nanocoating on MnCO3 microspheres via two-step liquid-phase deposition at room temperature. Morphological change from core-shell to hollow microparticles was possible in the prepared samples by controlling prereaction time of MnCO3 and [NH4]2TiF6. Upon the prereaction process, the core of the core-shell MnCO3/TiO2 became highly porous, and a honeycomb-like surface that resembled the orientation of self-assembled MnCO3 nanocrystals was developed. The MnCO3 core was completely removed after 6 h prereaction. Calcination at 600 °C resulted in the transformation of both core-shell- and hollow-structured composites to Mn2O3/TiO2 anatase microspheres that retained their original morphologies. X-ray diffraction, field-emission scanning electron microscopy, Fourier transform infrared spectroscopy, transmission electron microscopy, and electron probe microanalysis were employed for microsphere characterization. As the first trial for application of the synthesized materials, solid-extraction of organics from aqueous media was examined using methylene blue (MB). Both types of Mn2O3/TiO2 composites showed very fast adsorption of MB with high extraction values of 5.2 and 6.4 μmol g(-1) for the core-shell and hollow structures, respectively. Current work provides a new approach for facile fabrication of titania-metal oxide nanocomposites with unique morphological features and promising application possibilities.
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Affiliation(s)
- Hack-Keun Lee
- Graduate School of Environmental Engineering, The University of Kitakyushu , Kitakyushu 808-0135, Japan
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State of the art in catalytic oxidation of chlorinated volatile organic compounds. CHEMICAL PAPERS 2014. [DOI: 10.2478/s11696-013-0505-7] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
AbstractChlorine-containing organic compounds (Cl-VOC) require special attention due to their distinct toxicity, high stability and persistence in the environment. Removal of Cl-VOC by catalytic oxidation over a wide variety of catalysts has been presented in literature. This paper reviews the state of the art in this subject, including different model compounds, nature of catalysts, and oxidation activity. Catalyst selectivity (CO2 vs. CO and HCl vs. Cl2), by-products formation and the causes of deactivation are also analyzed as the most important factors in the catalyst selection for practical applications.
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Ozone Promotion of Monochlorobenzene Catalytic Oxidation Over Carbon Nanotubes-Supported Copper Oxide at High Temperature. Catal Letters 2013. [DOI: 10.1007/s10562-013-1059-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Abstract
Amorphous phase MnOx/TiO2 catalysts were prepared by two different methods, their catalytic activities for low temperature selective catalytic reduction (SCR) of NOx with NH3 in the presence of excess oxygen were investigated. The catalysts were characterized by XRD, XPS and HRTEM. The results showed that the catalyst prepared by soft template method had better catalytic active than those prepared by sol-gel method, its catalytic property could reach 98.2% at 200°C. From the microstructure characterization, it could be known that the catalyst prepared by soft template had the shape of nanorod, this shape was contributed to the dispersion of the manganese oxides and possessed higher surface lattice oxygen concentration. Furthermore, narrow slit-shaped pores associated with rod-like particles could provide efficient transport pathways to reactant molecules and products. Due to these, the catalyst performed catalytic active very well.
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Dispersion–precipitation synthesis of nanorod Mn3O4 with high reducibility and the catalytic complete oxidation of air pollutants. CATAL COMMUN 2013. [DOI: 10.1016/j.catcom.2012.11.013] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Li Q, Yang H, Nie A, Fan X, Zhang X. Catalytic Reduction of NO with NH3 over V2O5-MnOX/TiO2-Carbon Nanotube Composites. Catal Letters 2011. [DOI: 10.1007/s10562-011-0622-2] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Wang HC, Liang HS, Chang MB. Chlorobenzene oxidation using ozone over iron oxide and manganese oxide catalysts. JOURNAL OF HAZARDOUS MATERIALS 2011; 186:1781-1787. [PMID: 21227575 DOI: 10.1016/j.jhazmat.2010.12.070] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2010] [Revised: 12/11/2010] [Accepted: 12/15/2010] [Indexed: 05/30/2023]
Abstract
A low-temperature catalytic oxidation of chlorobenzene (CB) has been performed at temperatures of 60-210°C using ozone (O(3)) over iron oxide and manganese oxide, respectively. In the absence of ozone, CB conversion achieved with these two catalysts at 200°C was below 10%. However, addition of 1200 ppm ozone results in a remarkable increase in CB conversion and the conversion reaches 91.7% at 150°C for iron oxide, while 81.5% conversion is achieved with manganese oxide at 90°C. The activation energy of manganese oxide (48 kJ mol(-1)) is higher than that of iron oxide (43 kJ mol(-1)) without ozone. However, as ozone is added, the activation energy is significantly reduced to 20.0 kJ mol(-1) for iron oxide. CO and CO(2) are the only carbon-containing products detected in the effluent gas stream. For the long-term test, no obvious deactivation was found in iron oxide and ozone. However, in the case of manganese oxide and ozone, 3% reduction of CB conversion was observed. Slight deactivation might be attributed to a small amount of reaction byproducts (carboxylic acid species) and residual chloride (MnCl(2)) being deposited on the active sites of the catalysts.
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Affiliation(s)
- Hou Chuan Wang
- Graduate Institute of Environmental Engineering, National Central University, Chung-Li, Taoyuan County 320, Taiwan
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