Superior Oxidative Dehydrogenation Performance toward NH3 Determines the Excellent Low-Temperature NH3-SCR Activity of Mn-Based Catalysts
文献类型：期刊论文
| 作者 | He, Guangzhi; Gao, Meng; Peng, Yue; Yu, Yunbo; Shan, Wenpo; He, Hong
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| 刊名 | ENVIRONMENTAL SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2021-05-18 |
| 卷号 | 55期号:10页码:6995-7003 |
| ISSN号 | 0013-936X |
| 英文摘要 | Mn-based oxides exhibit outstanding low-temperature activity for the selective catalytic reduction of NOx with NH3 (NH3-SCR) compared with other catalysts. However, the underlying principle responsible for the excellent low-temperature activity is not yet clear. Here, the atomic-level mechanism and activity-limiting factor in the NH3-SCR process over Mn-, Fe-, and Ce-based oxide catalysts are elucidated by a combination of first-principles calculations and experimental measurements. We found that the superior oxidative dehydrogenation performance toward NH3 of Mn-based catalysts reduces the energy barriers for the activation of NH3 and the formation of the key intermediate NH2NO, which is the rate-determining step in NH3-SCR over these oxide catalysts. The findings of this study advance the understanding of the working principle of Mn-based SCR catalysts and provide a fundamental basis for the development of future generation SCR catalysts with excellent low-temperature activity. |
| WOS研究方向 | Engineering, Environmental ; Environmental Sciences |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/46075]  |
| 专题 | 生态环境研究中心_水污染控制实验室 |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Tsinghua Univ, Sch Environm, State Key Joint Lab Environm Simulat & Pollut Con, Natl Engn Lab Multi Flue Gas Pollut Control Techn, B 3.Chinese Acad Sci, Ctr Excellence Reg Atmospher Environm, Inst Urban Environm, Beijing 100085, Peoples R China 4.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100085, Peoples R China 5.Chinese Acad Sci, Ctr Excellence Reg Atmospher Environm, Inst Urban Environm, Xiamen 361021, Peoples R China |
| 推荐引用方式 GB/T 7714 | He, Guangzhi,Gao, Meng,Peng, Yue,et al. Superior Oxidative Dehydrogenation Performance toward NH3 Determines the Excellent Low-Temperature NH3-SCR Activity of Mn-Based Catalysts[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2021,55(10):6995-7003. |
| APA | He, Guangzhi,Gao, Meng,Peng, Yue,Yu, Yunbo,Shan, Wenpo,&He, Hong.(2021).Superior Oxidative Dehydrogenation Performance toward NH3 Determines the Excellent Low-Temperature NH3-SCR Activity of Mn-Based Catalysts.ENVIRONMENTAL SCIENCE & TECHNOLOGY,55(10),6995-7003. |
| MLA | He, Guangzhi,et al."Superior Oxidative Dehydrogenation Performance toward NH3 Determines the Excellent Low-Temperature NH3-SCR Activity of Mn-Based Catalysts".ENVIRONMENTAL SCIENCE & TECHNOLOGY 55.10(2021):6995-7003. |
入库方式： OAI收割
来源：生态环境研究中心
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