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Jiang D, Wang Y, Zhou Y, Li Z, Li S, Zhang S, Chen S, Sun Z. Performance of sintering dust-modified metal oxides catalyst in SCR-NH3 technique. RESEARCH ON CHEMICAL INTERMEDIATES 2023. [DOI: 10.1007/s11164-023-04995-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/17/2023]
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2
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Wang S, Ye D, Liu X, Wang H, Ma W, Liu H. Mn-Cr mixed oxide adsorbents with high SO2 resistance for elemental mercury removal from coal-fired flue gas. J IND ENG CHEM 2023. [DOI: 10.1016/j.jiec.2023.03.041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
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3
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Chen Z, Liao Y, Chen Y, Ma X. In situ DRIFTS FT-IR and DFT study on Fe-V-W/Ti removal of NO x and VOCs. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:81571-81582. [PMID: 35737261 DOI: 10.1007/s11356-022-21244-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Accepted: 05/30/2022] [Indexed: 06/15/2023]
Abstract
Nitrogen oxides (NOX) and volatile organic compounds (VOCs) are generated during the coal-fired power plant's combustion. They can be simultaneously removed in SCR (selective catalytic reduction) region. Herein, the performance of V-W/Ti and Fe-V-W/Ti synthesized by wet impregnation in removing NOX and VOCs was evaluated. XPS (X-ray photoelectron spectroscopy) result indicated that a redox cycle of Fe2+ + V5+ ⇌ Fe3+ + V4+ could form electron vacancy through electron transfer. Besides, the mechanisms of NH3-SCR and VOCs catalytic oxidation were explored with in situ DRIFTS experience and DFT calculation. On Fe-V-W/Ti, in situ DRIFTS study found more absorption sites of NH3, and different intermediates during simultaneously removal process. DFT calculation demonstrated that absorption energy of O2 was decreased and O = O bond was lengthened with Fe doped. Both V-W/Ti and Fe-V-W/Ti followed the L-H mechanism and shared a common NH3-SCR pathway: [Formula: see text]. However, the bidentate nitrate and monodentate nitrate were also revealed on Fe-V-W/Ti, which combined with NH4+ and decomposed into N2 and H2O, or N2O and H2O, respectively. The detected NH2 species combined with NO on the Fe-V-W/Ti, following the E-R mechanism. As for VOCs, the intermediates of benzene and toluene were revealed by in situ DRIFTS study, and detailed Mars-van Krevelen mechanism was discovered.
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Affiliation(s)
- Zhuofan Chen
- School of Electric Power, South China University of Technology, No. 381, Wushan Road, Tianhe District, Guangzhou, 510640, China
- Guangdong Province Key Laboratory of Efficient and Clean Energy Utilization, Guangzhou, 510640, China
- Guangdong Province Engineering Research Center of High Efficient and Low Pollution Energy Conversion, Guangzhou, 510640, Guangdong, China
| | - Yanfen Liao
- School of Electric Power, South China University of Technology, No. 381, Wushan Road, Tianhe District, Guangzhou, 510640, China.
- Guangdong Province Key Laboratory of Efficient and Clean Energy Utilization, Guangzhou, 510640, China.
- Guangdong Province Engineering Research Center of High Efficient and Low Pollution Energy Conversion, Guangzhou, 510640, Guangdong, China.
| | - Yin Chen
- School of Electric Power, South China University of Technology, No. 381, Wushan Road, Tianhe District, Guangzhou, 510640, China
- Guangdong Province Key Laboratory of Efficient and Clean Energy Utilization, Guangzhou, 510640, China
- Guangdong Province Engineering Research Center of High Efficient and Low Pollution Energy Conversion, Guangzhou, 510640, Guangdong, China
| | - Xiaoqian Ma
- School of Electric Power, South China University of Technology, No. 381, Wushan Road, Tianhe District, Guangzhou, 510640, China
- Guangdong Province Key Laboratory of Efficient and Clean Energy Utilization, Guangzhou, 510640, China
- Guangdong Province Engineering Research Center of High Efficient and Low Pollution Energy Conversion, Guangzhou, 510640, Guangdong, China
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Xu J, Zhang Y, Zou X, Tang T, Zhang Q, Guo F, Liu H. Recent advances and perspectives in the resistance of SO 2 and H 2O of cerium-based catalysts for NO x selective catalytic reduction with ammonia. NEW J CHEM 2022. [DOI: 10.1039/d1nj04825b] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
This review emphasizes the aspects related to cerium-based catalysts at different levels: metal modification, preparation methods, structures, and reaction mechanisms.
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Affiliation(s)
- Junqiang Xu
- School of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing, 400454, China
| | - Yanrong Zhang
- School of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing, 400454, China
| | - Xianlin Zou
- School of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing, 400454, China
| | - Tian Tang
- School of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing, 400454, China
| | - Qiang Zhang
- School of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing, 400454, China
| | - Fang Guo
- School of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing, 400454, China
| | - Honghui Liu
- SPIC Yuanda Environmental Protection of Catalyst Co., Ltd, Chongqing, 401336, China
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Xing Y, Guo Z, Su W, Zhang H, Chen J, Tian J, Yuan J, Di Wu. Vanadium-bearing steel slag catalysts for the selective catalytic reduction of NO x by NH 3. NEW J CHEM 2022. [DOI: 10.1039/d2nj02419e] [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
In this paper, denitration catalysts were prepared by different modification methods using vanadium-bearing steel slag as raw material.
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Affiliation(s)
- Yi Xing
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
- Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, University of Science and Technology Beijing, Beijing 100083, China
| | - Zefeng Guo
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Wei Su
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
- Key Laboratory of Knowledge Automation for Industrial Processes, Ministry of Education, Beijing 100083, China
| | - Hui Zhang
- Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
| | - Jing Chen
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Jinglei Tian
- HBIS Group Research Institute, Shijiazhuang 050000, China
| | - Jichao Yuan
- Environmental Protection Department, HBIS Group Chengsteel Company, Chengde 067102, China
| | - Di Wu
- Iron Making Department, HBIS Group Chengsteel Company, Chengde 067002, China
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Yang R, Fan Y, Ye R, Tang Y, Cao X, Yin Z, Zeng Z. MnO 2 -Based Materials for Environmental Applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2004862. [PMID: 33448089 DOI: 10.1002/adma.202004862] [Citation(s) in RCA: 124] [Impact Index Per Article: 41.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 08/31/2020] [Indexed: 06/12/2023]
Abstract
Manganese dioxide (MnO2 ) is a promising photo-thermo-electric-responsive semiconductor material for environmental applications, owing to its various favorable properties. However, the unsatisfactory environmental purification efficiency of this material has limited its further applications. Fortunately, in the last few years, significant efforts have been undertaken for improving the environmental purification efficiency of this material and understanding its underlying mechanism. Here, the aim is to summarize the recent experimental and computational research progress in the modification of MnO2 single species by morphology control, structure construction, facet engineering, and element doping. Moreover, the design and fabrication of MnO2 -based composites via the construction of homojunctions and MnO2 /semiconductor/conductor binary/ternary heterojunctions is discussed. Their applications in environmental purification systems, either as an adsorbent material for removing heavy metals, dyes, and microwave (MW) pollution, or as a thermal catalyst, photocatalyst, and electrocatalyst for the degradation of pollutants (water and gas, organic and inorganic) are also highlighted. Finally, the research gaps are summarized and a perspective on the challenges and the direction of future research in nanostructured MnO2 -based materials in the field of environmental applications is presented. Therefore, basic guidance for rational design and fabrication of high-efficiency MnO2 -based materials for comprehensive environmental applications is provided.
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Affiliation(s)
- Ruijie Yang
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, 999077, P. R. China
| | - Yingying Fan
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, 999077, P. R. China
| | - Ruquan Ye
- Department of Chemistry, State Key Lab of Marine Pollution, City University of Hong Kong, Hong Kong, 999077, P. R. China
| | - Yuxin Tang
- College of Chemical Engineering, Fuzhou University, Fuzhou, 350116, P. R. China
| | - Xiehong Cao
- College of Materials Science and Engineering, Zhejiang University of Technology, 18 Chaowang Road, Hangzhou, Zhejiang, 310014, P. R. China
| | - Zongyou Yin
- Research School of Chemistry, Australian National University, Canberra, ACT, 2601, Australia
| | - Zhiyuan Zeng
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, 999077, P. R. China
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Li X, Han Z, Shi Q, Wang X, Wu X, Gao Y, Li C, Liu G. Characterization of WMnCeTiO x catalysts prepared by different methods for the selective reduction of NO with NH 3. NEW J CHEM 2021. [DOI: 10.1039/d1nj03891e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
WMnCeTiOx(CP) catalysts showed excellent NH3-SCR activity and better SO2 tolerance.
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Affiliation(s)
- Xiaodi Li
- School of Resources and Environmental Sciences, XinJiang University, Wulumuqi, 830000, China
| | - Zhitao Han
- Marine Engineering College, Dalian Maritime University, No. 1, Linghai Road, Dalian 116026, China
- Liaoning Research Center for Marine Internal Combustion Engine Energy-Saving, Dalian 116026, China
| | - Qingdong Shi
- School of Resources and Environmental Sciences, XinJiang University, Wulumuqi, 830000, China
| | - Xinxin Wang
- Marine Engineering College, Dalian Maritime University, No. 1, Linghai Road, Dalian 116026, China
| | - Xitian Wu
- Marine Engineering College, Dalian Maritime University, No. 1, Linghai Road, Dalian 116026, China
| | - Yu Gao
- Marine Engineering College, Dalian Maritime University, No. 1, Linghai Road, Dalian 116026, China
| | - Chenglong Li
- Marine Engineering College, Dalian Maritime University, No. 1, Linghai Road, Dalian 116026, China
| | - Gang Liu
- Marine Engineering College, Dalian Maritime University, No. 1, Linghai Road, Dalian 116026, China
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Hou H, Zhou J, Ji M, Yue Y, Qian G, Zhang J. Mechanochemical activation of titanium slag for effective selective catalytic reduction of nitric oxide. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 743:140733. [PMID: 32673916 DOI: 10.1016/j.scitotenv.2020.140733] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Revised: 06/30/2020] [Accepted: 07/02/2020] [Indexed: 06/11/2023]
Abstract
Ti-bearing blast furnace slag was usually recycled by acid leaching. For the first time, a catalyst was synthesized from the slag by wet ball-milling. During this process, no waste was produced. When the activated slag was used in selective catalytic reduction of nitric oxide (NO), 80.5 ± 1.2% of NO (990 ppm) was removed at 350 °C. The catalyst steadily removed 91.0 ± 1.3% of NO for 900 min at 400 °C. On the contrary, the slag without activation showed almost no catalytic activity at these temperatures. The enhanced activity was mainly attributed to the following characterizations. After wet ball-milling, specific surface area of the slag was increased from 2.595 to 26.497 m2/g; surface acid sites were amplified by 15 times; Fe/Ti ratio on surface was enhanced from 0.20 to 1.10. At the same time, surface Fe2+/Fe3+ was regulated from 0.43 to 0.53. The above enhanced properties were attributed to the mechanochemical activation, which dissolved and re-deposited active species on particle surface as well as reinforced the effect between Fe and Ti species. The main result of this work put forward a green method for the direct utilization of industrial waste without generating by-products.
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Affiliation(s)
- Hao Hou
- SHU Center of Green Urban Mining & Industry Ecology, School of Environmental and Chemical Engineering, Shanghai University, No. 381 Nanchen Road., Shanghai 200444, PR China
| | - Jizhi Zhou
- School of Economics, Shanghai University, No. 333 Nanchen Road., Shanghai 200444, PR China.
| | - Meiting Ji
- SHU Center of Green Urban Mining & Industry Ecology, School of Environmental and Chemical Engineering, Shanghai University, No. 381 Nanchen Road., Shanghai 200444, PR China
| | - Yang Yue
- MGI of Shanghai University, Xiapu Town, Xiangdong District, Pingxiang City, Jiangxi 337022, PR China
| | - Guangren Qian
- SHU Center of Green Urban Mining & Industry Ecology, School of Environmental and Chemical Engineering, Shanghai University, No. 381 Nanchen Road., Shanghai 200444, PR China; MGI of Shanghai University, Xiapu Town, Xiangdong District, Pingxiang City, Jiangxi 337022, PR China,.
| | - Jia Zhang
- SHU Center of Green Urban Mining & Industry Ecology, School of Environmental and Chemical Engineering, Shanghai University, No. 381 Nanchen Road., Shanghai 200444, PR China; MGI of Shanghai University, Xiapu Town, Xiangdong District, Pingxiang City, Jiangxi 337022, PR China,.
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Lü X, Li H, Du X, Wang X, Lan M, Wu J, Zhu J, Sun J, Jiang F. Simultaneous catalytic reduction of SO 2 and NO from flue gas using H 2S as a reductant at low temperatures. REACT CHEM ENG 2020. [DOI: 10.1039/c9re00347a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
High-efficiency simultaneous removal of NO and SO2 in flue gas can be realized by catalytic reduction with H2S on CeO2–AT catalyst in the low temperature range of 240 to 280 °C.
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Affiliation(s)
- Xianghong Lü
- MOE Key Laboratory of Theoretical Chemistry of Environment
- School of Environment
- South China Normal University
- Guangzhou
- China
| | - Hao Li
- MOE Key Laboratory of Theoretical Chemistry of Environment
- School of Environment
- South China Normal University
- Guangzhou
- China
| | - Xiaohui Du
- MOE Key Laboratory of Theoretical Chemistry of Environment
- School of Environment
- South China Normal University
- Guangzhou
- China
| | - Xue Wang
- MOE Key Laboratory of Theoretical Chemistry of Environment
- School of Environment
- South China Normal University
- Guangzhou
- China
| | - Minyi Lan
- MOE Key Laboratory of Theoretical Chemistry of Environment
- School of Environment
- South China Normal University
- Guangzhou
- China
| | - Jianlin Wu
- MOE Key Laboratory of Theoretical Chemistry of Environment
- School of Environment
- South China Normal University
- Guangzhou
- China
| | - Jin Zhu
- MOE Key Laboratory of Theoretical Chemistry of Environment
- School of Environment
- South China Normal University
- Guangzhou
- China
| | - Jianliang Sun
- MOE Key Laboratory of Theoretical Chemistry of Environment
- School of Environment
- South China Normal University
- Guangzhou
- China
| | - Feng Jiang
- School of Environmental Science & Engineering
- Sun Yat-sen University
- Guangzhou
- China
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10
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Li G, Mao D, Chao M, Li G, Yu J, Guo X. Significantly enhanced Pb resistance of a Co-modified Mn–Ce–O x/TiO 2 catalyst for low-temperature NH 3-SCR of NO x. Catal Sci Technol 2020. [DOI: 10.1039/d0cy01066a] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Co modification can significantly improve the performance for low-temperature NH3-SCR of NOx and the Pb resistance of the Mn–Ce–Ox/TiO2 catalyst.
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Affiliation(s)
- Gehua Li
- School of Chemical and Environmental Engineering
- Shanghai Institute of Technology
- Shanghai 201418
- PR China
| | - Dongsen Mao
- School of Chemical and Environmental Engineering
- Shanghai Institute of Technology
- Shanghai 201418
- PR China
| | - Mengxi Chao
- School of Chemical and Environmental Engineering
- Shanghai Institute of Technology
- Shanghai 201418
- PR China
| | - Gang Li
- School of Chemical and Environmental Engineering
- Shanghai Institute of Technology
- Shanghai 201418
- PR China
| | - Jun Yu
- School of Chemical and Environmental Engineering
- Shanghai Institute of Technology
- Shanghai 201418
- PR China
| | - Xiaoming Guo
- School of Chemical and Environmental Engineering
- Shanghai Institute of Technology
- Shanghai 201418
- PR China
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Liu K, Yu Q, Wang B, Han Z, San J, Qin Q. Novel efficient U–Cu/CSAC catalyst for selective reduction of NO at low temperatures: preparation, characterization, evaluation and mechanism. NEW J CHEM 2019. [DOI: 10.1039/c9nj02740h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Highly dispersed Cu0 nanoparticles and amorphous Cu2O supported on coconut shell-based activated carbon showed excellent LTU-SCR activity at low temperatures.
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Affiliation(s)
- Kaijie Liu
- School of Metallurgy
- Northeastern University
- Liaoning
- P. R. China
| | - Qingbo Yu
- School of Metallurgy
- Northeastern University
- Liaoning
- P. R. China
| | - Baolan Wang
- School of Metallurgy
- Northeastern University
- Liaoning
- P. R. China
| | - Zhicheng Han
- School of Metallurgy
- Northeastern University
- Liaoning
- P. R. China
| | - Junbo San
- School of Metallurgy
- Northeastern University
- Liaoning
- P. R. China
| | - Qin Qin
- School of Metallurgy
- Northeastern University
- Liaoning
- P. R. China
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