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Xiong Z, Zhu Y, Liu J, Du Y, Zhou F, Jin J, Yang Q, Lu W. The influence of H 2O or/and O 2 introduction during the low-temperature gas-phase sulfation of organic COS + CS 2 on the conversion and deposition of sulfur-containing species in the sulfated CeO 2-OS catalyst for NH 3-SCR. NANOSCALE 2024; 16:1223-1237. [PMID: 38115815 DOI: 10.1039/d3nr04686a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2023]
Abstract
Herein, the typical components of blast furnace gas, including H2O and O2, were introduced to improve the NH3-SCR activity of the sulfated CeO2-OS catalyst during the gas-phase sulfation of organic COS + CS2 at 50 °C. The characterization results demonstrate that the introduction of O2 or H2O during gas-phase sulfation enhances the conversion of organic COS + CS2 on a cubic fluorite CeO2 surface and reduces the formation of sulfur and sulfates in the catalyst, but decreases the BET surface area and pore volume of the sulfated CeO2-OS catalyst. However, the introduction of O2 or H2O during the gas-phase sulfation increases the molar ratios of Ce3+/(Ce3+ + Ce4+) and Oβ/(Oα + Oβ + Oγ) on the sulfated CeO2-OS catalyst surface, thus promoting the formation of surface oxygen vacancies and chemisorbed oxygen, and these properties of the catalyst are further enhanced by the co-existence of O2 and H2O. Furthermore, the reduction of sulfates formed under the action of O2 or H2O decreases the weak acid sites of the sulfated CeO2-OS catalyst, but the few and highly dispersive sulfates present stronger reducibility, and the proportion of medium-strong acid sites of the catalyst increases. These factors help to improve the NH3-SCR activity of the sulfated CeO2-OS catalyst. Thus, there exists a synergistic effect of H2O and O2 introduction during gas-phase sulfation on the physical-chemical properties and catalytic performance of the sulfated CeO2-OS catalyst by organic COS + CS2 at 50 °C.
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Affiliation(s)
- Zhibo Xiong
- School of Energy and Power Engineering, University of Shanghai for Science & Technology, Shanghai, 200093, China.
| | - Yafei Zhu
- School of Energy and Power Engineering, University of Shanghai for Science & Technology, Shanghai, 200093, China.
| | - Jiaxing Liu
- School of Energy and Power Engineering, University of Shanghai for Science & Technology, Shanghai, 200093, China.
| | - Yanping Du
- School of Engineering, Lancaster University, Lancaster, LA1 4YW, UK
| | - Fei Zhou
- Jiangsu Guoxin Jingjiang Power Co. Ltd., Jingjiang 214500, Jiangsu, China
| | - Jing Jin
- School of Energy and Power Engineering, University of Shanghai for Science & Technology, Shanghai, 200093, China.
| | - Qiguo Yang
- School of Energy and Power Engineering, University of Shanghai for Science & Technology, Shanghai, 200093, China.
| | - Wei Lu
- School of Energy and Power Engineering, University of Shanghai for Science & Technology, Shanghai, 200093, China.
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Yuan L, Hu P, Hu B, Han J, Ma S, Yang F, Volinsky AA. Metallic and non-metallic components and morphology of iron-based catalytic effects for selective catalytic reduction performance: A systematic review. MOLECULAR CATALYSIS 2023. [DOI: 10.1016/j.mcat.2023.113113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
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3
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Chen W, Zou R, Wang X. Toward an Atomic-Level Understanding of the Catalytic Mechanism of Selective Catalytic Reduction of NO x with NH 3. ACS Catal 2022. [DOI: 10.1021/acscatal.2c03508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Weibin Chen
- School of Materials Science and Engineering, Peking University, Beijing100871, People’s Republic of China
| | - Ruqiang Zou
- School of Materials Science and Engineering, Peking University, Beijing100871, People’s Republic of China
| | - Xidong Wang
- School of Materials Science and Engineering, Peking University, Beijing100871, People’s Republic of China
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Deng D, Deng S, He D, Wang Z, Chen Z, Ji Y, Yan G, Hou G, Liu L, He H. A comparative study of hydrothermal aging effect on cerium and lanthanum doped Cu/SSZ-13 catalysts for NH3-SCR. J RARE EARTH 2021. [DOI: 10.1016/j.jre.2020.08.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Zeng Y, Haw K, Wang Y, Zhang S, Wang Z, Zhong Q, Kawi S. Recent Progress of CeO
2
−TiO
2
Based Catalysts for Selective Catalytic Reduction of NO
x
by NH
3. ChemCatChem 2020. [DOI: 10.1002/cctc.202001307] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Yiqing Zeng
- School of Chemical Engineering Nanjing University of Science and Technology Nanjing 210094 P.R. China
- Department of Chemical and Biomolecular Engineering National University of Singapore Singapore 117582 Singapore
| | - Kok‐Giap Haw
- Department of Chemical and Biomolecular Engineering National University of Singapore Singapore 117582 Singapore
| | - Yanan Wang
- School of Chemical Engineering Nanjing University of Science and Technology Nanjing 210094 P.R. China
| | - Shule Zhang
- School of Chemical Engineering Nanjing University of Science and Technology Nanjing 210094 P.R. China
| | - Zhigang Wang
- Department of Chemical and Biomolecular Engineering National University of Singapore Singapore 117582 Singapore
| | - Qin Zhong
- School of Chemical Engineering Nanjing University of Science and Technology Nanjing 210094 P.R. China
| | - Sibudjing Kawi
- Department of Chemical and Biomolecular Engineering National University of Singapore Singapore 117582 Singapore
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Song Z, Xing Y, Zhang T, Zhao J, Wang J, Mao Y, Zhao B, Zhang X, Zhao M, Ma Z. Effectively promoted catalytic activity by adjusting calcination temperature of Ce‐Fe‐O
x
catalyst for NH
3
‐SCR. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.5446] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Zhongxian Song
- Faculty of Environmental and Municipal Engineering, Henan Key Laboratory of Water Pollution Control and Rehabilitation TechnologyHenan University of Urban Construction Pingdingshan 467000 People's Republic of China
| | - Yun Xing
- College of Environmental and Safety EngineeringShenyang University of Chemical Technology Shenyang 110142 People's Republic of China
| | - Tingji Zhang
- College of Environmental and Safety EngineeringShenyang University of Chemical Technology Shenyang 110142 People's Republic of China
| | - Jinggang Zhao
- College of Environmental and Safety EngineeringShenyang University of Chemical Technology Shenyang 110142 People's Republic of China
| | - Junkai Wang
- College of Environmental and Safety EngineeringShenyang University of Chemical Technology Shenyang 110142 People's Republic of China
| | - Yanli Mao
- Faculty of Environmental and Municipal Engineering, Henan Key Laboratory of Water Pollution Control and Rehabilitation TechnologyHenan University of Urban Construction Pingdingshan 467000 People's Republic of China
| | - Baolin Zhao
- Faculty of Environmental and Municipal Engineering, Henan Key Laboratory of Water Pollution Control and Rehabilitation TechnologyHenan University of Urban Construction Pingdingshan 467000 People's Republic of China
| | - Xuejun Zhang
- College of Environmental and Safety EngineeringShenyang University of Chemical Technology Shenyang 110142 People's Republic of China
| | - Min Zhao
- College of Environmental and Safety EngineeringShenyang University of Chemical Technology Shenyang 110142 People's Republic of China
| | - Ziang Ma
- College of Environmental and Safety EngineeringShenyang University of Chemical Technology Shenyang 110142 People's Republic of China
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The promotional effect of SO42− on N2 selectivity for selective catalytic oxidation of ammonia over RuO2/ZrO2 catalyst. RESEARCH ON CHEMICAL INTERMEDIATES 2019. [DOI: 10.1007/s11164-019-03991-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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Zhang X, Wang J, Song Z, Zhao H, Xing Y, Zhao M, Zhao J, Ma Z, Zhang P, Tsubaki N. Promotion of surface acidity and surface species of doped Fe and SO42- over CeO2 catalytic for NH3-SCR reaction. MOLECULAR CATALYSIS 2019. [DOI: 10.1016/j.mcat.2018.11.002] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Liu N, Wang J, Wang F, Liu J. Promoting effect of tantalum and antimony additives on deNO performance of Ce3Ta3SbO for NH3-SCR reaction and DRIFT studies. J RARE EARTH 2018. [DOI: 10.1016/j.jre.2017.12.009] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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