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Ren D, Hao W, Li W, Liu P, Luo S, Gui K, Zuo Z. Study of S poisoning mechanism on LaMnO 3 perovskite catalyst surface based on DFT method. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:120315-120328. [PMID: 37940819 DOI: 10.1007/s11356-023-30498-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Accepted: 10/08/2023] [Indexed: 11/10/2023]
Abstract
The sulfur poisoning mechanism of low-temperature SCR de-NOx catalyst has always been one of the hot spots in academic circles. By studying the surface sulfur poisoning mechanism, low-temperature catalysts can be developed pertinently. In this paper, the mechanism of sulfur poisoning on the surface of LaMnO3 catalyst was studied by DFT method, and the adsorption process of sulfur oxides on the surface and its influence on SCR reaction process, as well as the morphology and decomposition process of ammonium sulfate on the surface were calculated. The results show that sulfur oxides will be adsorbed on the surface and occupy the adsorption site, which will adversely affect the subsequent SCR reaction. At the same time, ammonium sulfate will accumulate on the catalyst surface, which will lead to sulfur poisoning.
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Affiliation(s)
- Dongdong Ren
- School of Environmental and Municipal Engineering, Qingdao University of Technology, No. 11, Jialingjiangdong Road, Huangdao District, Qingdao, 266520, People's Republic of China
| | - Wencong Hao
- School of Environmental and Municipal Engineering, Qingdao University of Technology, No. 11, Jialingjiangdong Road, Huangdao District, Qingdao, 266520, People's Republic of China
| | - Wei Li
- Shandong Ludong Road and Bridge Co., Ltd, Dongying, 257100, People's Republic of China
| | - Pengyun Liu
- Shandong Ludong Road and Bridge Co., Ltd, Dongying, 257100, People's Republic of China
| | - Siyi Luo
- School of Environmental and Municipal Engineering, Qingdao University of Technology, No. 11, Jialingjiangdong Road, Huangdao District, Qingdao, 266520, People's Republic of China.
| | - Keting Gui
- School of Energy and Environment, Southeast University, Nanjing, 210096, People's Republic of China
| | - Zongliang Zuo
- School of Environmental and Municipal Engineering, Qingdao University of Technology, No. 11, Jialingjiangdong Road, Huangdao District, Qingdao, 266520, People's Republic of China
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Zeng Z, Xu Y, Zhang Z, Gao Z, Luo M, Yin Z, Zhang C, Xu J, Huang B, Luo F, Du Y, Yan C. Rare-earth-containing perovskite nanomaterials: design, synthesis, properties and applications. Chem Soc Rev 2020; 49:1109-1143. [PMID: 31939973 DOI: 10.1039/c9cs00330d] [Citation(s) in RCA: 96] [Impact Index Per Article: 19.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
As star material, perovskites have been widely used in the fields of optics, photovoltaics, electronics, magnetics, catalysis, sensing, etc. However, some inherent shortcomings, such as low efficiency (power conversion efficiency, external quantum efficiency, etc.) and poor stability (against water, oxygen, ultraviolet light, etc.), limit their practical applications. Downsizing the materials into nanostructures and incorporating rare earth (RE) ions are effective means to improve their properties and broaden their applications. This review will systematically summarize the key points in the design, synthesis, property improvements and application expansion of RE-containing (including both RE-based and RE-doped) halide and oxide perovskite nanomaterials (PNMs). The critical factors of incorporating RE elements into different perovskite structures and the rational design of functional materials will be discussed in detail. The advantages and disadvantages of different synthesis methods for PNMs will be reviewed. This paper will also summarize some practical experiences in selecting suitable RE elements and designing multi-functional materials according to the mechanisms and principles of REs promoting the properties of perovskites. At the end of this review, we will provide an outlook on the opportunities and challenges of RE-containing PNMs in various fields.
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Affiliation(s)
- Zhichao Zeng
- Tianjin Key Lab for Rare Earth Materials and Applications, Center for Rare Earth and Inorganic Functional Materials, School of Materials Science and Engineering & National Institute for Advanced Materials, Nankai University, Tianjin 300350, China.
| | - Yueshan Xu
- Tianjin Key Lab for Rare Earth Materials and Applications, Center for Rare Earth and Inorganic Functional Materials, School of Materials Science and Engineering & National Institute for Advanced Materials, Nankai University, Tianjin 300350, China.
| | - Zheshan Zhang
- Tianjin Key Lab for Rare Earth Materials and Applications, Center for Rare Earth and Inorganic Functional Materials, School of Materials Science and Engineering & National Institute for Advanced Materials, Nankai University, Tianjin 300350, China.
| | - Zhansheng Gao
- Tianjin Key Lab for Rare Earth Materials and Applications, Center for Rare Earth and Inorganic Functional Materials, School of Materials Science and Engineering & National Institute for Advanced Materials, Nankai University, Tianjin 300350, China.
| | - Meng Luo
- Tianjin Key Lab for Rare Earth Materials and Applications, Center for Rare Earth and Inorganic Functional Materials, School of Materials Science and Engineering & National Institute for Advanced Materials, Nankai University, Tianjin 300350, China.
| | - Zongyou Yin
- Research School of Chemistry, The Australian National University, Canberra, ACT 2601, Australia
| | - Chao Zhang
- Tianjin Key Lab for Rare Earth Materials and Applications, Center for Rare Earth and Inorganic Functional Materials, School of Materials Science and Engineering & National Institute for Advanced Materials, Nankai University, Tianjin 300350, China.
| | - Jun Xu
- Tianjin Key Lab for Rare Earth Materials and Applications, Center for Rare Earth and Inorganic Functional Materials, School of Materials Science and Engineering & National Institute for Advanced Materials, Nankai University, Tianjin 300350, China.
| | - Bolong Huang
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, China.
| | - Feng Luo
- Tianjin Key Lab for Rare Earth Materials and Applications, Center for Rare Earth and Inorganic Functional Materials, School of Materials Science and Engineering & National Institute for Advanced Materials, Nankai University, Tianjin 300350, China.
| | - Yaping Du
- Tianjin Key Lab for Rare Earth Materials and Applications, Center for Rare Earth and Inorganic Functional Materials, School of Materials Science and Engineering & National Institute for Advanced Materials, Nankai University, Tianjin 300350, China.
| | - Chunhua Yan
- Tianjin Key Lab for Rare Earth Materials and Applications, Center for Rare Earth and Inorganic Functional Materials, School of Materials Science and Engineering & National Institute for Advanced Materials, Nankai University, Tianjin 300350, China. and Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, PKU-HKU Joint Laboratory in Rare Earth Materials and Bioinorganic Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing, China and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
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