Doping effect of cations (Zr4+, Al3+, and Si4+) on MnOx/CeO2 nano-rod catalyst for NH3-SCR reaction at low temperature
文献类型：期刊论文
| 作者 | Yao, Xiaojiang1 ; Cao, Jun1; Chen, Li1; Kang, Keke1; Chen, Yang1; Tian, Mi1; Yang, Fumo2,3
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| 刊名 | CHINESE JOURNAL OF CATALYSIS
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| 出版日期 | 2019-05-01 |
| 卷号 | 40期号:5页码:733-743 |
| 关键词 | MnOx/CeO2 nano-rod catalyst Doping effect Oxygen vacancy Surface acidity Low-temperature NH3-SCR reaction |
| ISSN号 | 0253-9837 |
| DOI | 10.1016/S1872-2067(18)63204-8 |
| 通讯作者 | Yao, Xiaojiang(yaoxj@cigit.ac.cn) |
| 英文摘要 | Thermally stable Zr4+, AP(3+), and Si4+ cations were incorporated into the lattice of CeO2 nano-rods (i.e., CeO2-NR) in order to improve the specific surface area. The undoped and Zr4+, Al3+, and Si4+ doped nano-rods were used as supports to prepare MnOx/CeO2-NR, MnOx/CZ-NR, MnOx/CA-NR, and MnOx/CS-NR catalysts, respectively. The prepared supports and catalysts were comprehensively characterized by transmission electron microscopy (TEM), high-resolution TEM, X-ray diffraction, Raman and N-2-physisorption analyses, hydrogen temperature-programmed reduction, ammonia temperature-programmed desorption, in situ diffuse reflectance infrared Fourier-transform spectroscopic analysis of the NH3 adsorption, and X-ray photoelectron spectroscopy. Moreover, the catalytic performance and H2O+SO2 tolerance of these samples were evaluated through NH3-selective catalytic reduction (NH3-SCR) in the absence or presence of H2O and SO2. The obtained results show that the MnOx/CS-NR catalyst exhibits the highest NOx conversion and the lowest N2O concentration, which result from the largest number of oxygen vacancies and acid sites, the highest Mn4+ content, and the lowest redox ability. The MnOx/CS-NR catalyst also presents excellent resistance to H2O and SO2. All of these phenomena suggest that Si4+ is the optimal dopant for the MnOx/CeO2-NR catalyst. (C) 2019, Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved. |
| 资助项目 | National Natural Science Foundation of China[21876168] ; National Natural Science Foundation of China[21507130] ; Youth Innovation Promotion Association of CAS[2019376] ; Chongqing Science & Technology Commission[cstc2016jcyjA0070] ; Chongqing Science & Technology Commission[cstckjcxljrc13] |
| WOS研究方向 | Chemistry ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000465053600014 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://119.78.100.138/handle/2HOD01W0/7755]  |
| 专题 | 大气环境研究中心 |
| 通讯作者 | Yao, Xiaojiang |
| 作者单位 | 1.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Key Lab Reservoir Aquat Environm, Res Ctr Atmospher Environm, Chongqing 400714, Peoples R China 2.Sichuan Univ, Sch Architecture & Environm, Natl Engn Res Ctr Flue Gas Desulfurizat, Chengdu 610065, Sichuan, Peoples R China 3.Chinese Acad Sci, Inst Urban Environm, Ctr Excellence Reg Atmospher Environm, Xiamen 361021, Fujian, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yao, Xiaojiang,Cao, Jun,Chen, Li,et al. Doping effect of cations (Zr4+, Al3+, and Si4+) on MnOx/CeO2 nano-rod catalyst for NH3-SCR reaction at low temperature[J]. CHINESE JOURNAL OF CATALYSIS,2019,40(5):733-743. |
| APA | Yao, Xiaojiang.,Cao, Jun.,Chen, Li.,Kang, Keke.,Chen, Yang.,...&Yang, Fumo.(2019).Doping effect of cations (Zr4+, Al3+, and Si4+) on MnOx/CeO2 nano-rod catalyst for NH3-SCR reaction at low temperature.CHINESE JOURNAL OF CATALYSIS,40(5),733-743. |
| MLA | Yao, Xiaojiang,et al."Doping effect of cations (Zr4+, Al3+, and Si4+) on MnOx/CeO2 nano-rod catalyst for NH3-SCR reaction at low temperature".CHINESE JOURNAL OF CATALYSIS 40.5(2019):733-743. |
入库方式： OAI收割
来源：重庆绿色智能技术研究院
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