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Wang Y, Xu W, Liu H, Chen W, Zhu T. Catalytic removal of gaseous pollutant NO using CO: Catalyst structure and reaction mechanism. ENVIRONMENTAL RESEARCH 2024; 246:118037. [PMID: 38160964 DOI: 10.1016/j.envres.2023.118037] [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: 10/24/2023] [Revised: 12/07/2023] [Accepted: 12/22/2023] [Indexed: 01/03/2024]
Abstract
Carbon monoxide (CO) has recently been considered an ideal reducing agent to replace NH3 in selective catalytic reduction of NOx (NH3-SCR). This shift is particularly relevant in diesel engines, coal-fired industry, the iron and steel industry, of which generate substantial amounts of CO due to incomplete combustion. Developing high-performance catalysts remain a critical challenge for commercializing this technology. The active sites on catalyst surface play a crucial role in the various microscopic reaction steps of this reaction. This work provides a comprehensive overview and insights into the reaction mechanism of active sites on transition metal- and noble metal-based catalysts, including the types of intermediates and active sites, as well as the conversion mechanism of active molecules or atoms. In addition, the effects of factors such as O2, SO2, and alkali metals, on NO reduction by CO were discussed, and the prospects for catalyst design are proposed. It is hoped to provide theoretical guidance for the rational design of efficient CO selective catalytic denitration materials based on the structure-activity relations.
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Affiliation(s)
- Yixi Wang
- CAS Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Innovation Academy for Green Manufacture, Chinese Academy of Sciences, Beijing, 100190, China
| | - Wenqing Xu
- CAS Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Innovation Academy for Green Manufacture, Chinese Academy of Sciences, Beijing, 100190, China; Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China.
| | - Huixian Liu
- CAS Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Innovation Academy for Green Manufacture, Chinese Academy of Sciences, Beijing, 100190, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Wanrong Chen
- CAS Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Innovation Academy for Green Manufacture, Chinese Academy of Sciences, Beijing, 100190, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Tingyu Zhu
- CAS Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Innovation Academy for Green Manufacture, Chinese Academy of Sciences, Beijing, 100190, China; Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China.
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Li Z, Hong R, Zhang Z, Wang H, Wu X, Wu Z. Single-Atom Catalysts in Environmental Engineering: Progress, Outlook and Challenges. Molecules 2023; 28:molecules28093865. [PMID: 37175275 PMCID: PMC10180131 DOI: 10.3390/molecules28093865] [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: 04/13/2023] [Revised: 04/25/2023] [Accepted: 04/27/2023] [Indexed: 05/15/2023] Open
Abstract
Recently, single-atom catalysts (SACs) have attracted wide attention in the field of environmental engineering. Compared with their nanoparticle counterparts, SACs possess high atomic efficiency, unique catalytic activity, and selectivity. This review summarizes recent studies on the environmental remediation applications of SACs in (1) gaseous: volatile organic compounds (VOCs) treatment, NOx reduction, CO2 reduction, and CO oxidation; (2) aqueous: Fenton-like advanced oxidation processes (AOPs), hydrodehalogenation, and nitrate/nitrite reduction. We present the treatment activities and reaction mechanisms of various SACs and propose challenges and future opportunities. We believe that this review will provide constructive inspiration and direction for future SAC research in environmental engineering.
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Affiliation(s)
- Zhe Li
- Department of Environmental Engineering, Zhejiang University, Hangzhou 310058, China
| | - Rongrong Hong
- Department of Environmental Engineering, Zhejiang University, Hangzhou 310058, China
| | - Zhuoyi Zhang
- Department of Environmental Engineering, Zhejiang University, Hangzhou 310058, China
| | - Haiqiang Wang
- Department of Environmental Engineering, Zhejiang University, Hangzhou 310058, China
| | - Xuanhao Wu
- Department of Environmental Engineering, Zhejiang University, Hangzhou 310058, China
| | - Zhongbiao Wu
- Department of Environmental Engineering, Zhejiang University, Hangzhou 310058, China
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Ji Y, Chen X, Liu S, Song S, Xu W, Jiang R, Chen W, Li H, Zhu T, Li Z, Zhong Z, Wang D, Xu G, Su F. Tailoring the Electronic Structure of Single Ag Atoms in Ag/WO 3 for Efficient NO Reduction by CO in the Presence of O 2. ACS Catal 2023. [DOI: 10.1021/acscatal.2c05048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Yongjun Ji
- School of Light Industry, Beijing Technology and Business University, Beijing 100048, China
| | - Xiaoli Chen
- School of Light Industry, Beijing Technology and Business University, Beijing 100048, China
| | - Shaomian Liu
- Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Shaojia Song
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China
| | - Wenqing Xu
- Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Ruihuan Jiang
- Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
- College of Chemistry and Chemical Engineering, Qiqihaer University, Qiqihaer 161006, Heilongjiang Province, China
| | - Wenxing Chen
- Energy & Catalysis Center, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Huifang Li
- Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Tingyu Zhu
- Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Zhenxing Li
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China
| | - Ziyi Zhong
- Department of Chemical Engineering, Guangdong Technion-Israel Institute of Technology (GTIIT), 241 Daxue Road, Shantou 515063, China
- Technion-Israel Institute of Technology (IIT), Haifa 32000, Israel
| | - Dingsheng Wang
- Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Guangwen Xu
- Institute of Industrial Chemistry and Energy Technology, Shenyang University of Chemical Technology, Shenyang 110142, China
| | - Fabing Su
- Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
- Institute of Industrial Chemistry and Energy Technology, Shenyang University of Chemical Technology, Shenyang 110142, China
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