Morphology and crystal-plane dependence of CeO2-TiO2 catalysts: Activity and mechanism for the selective catalytic reduction of NOx with NH3
文献类型：期刊论文
| 作者 | Luo, Wen1,2,3,4; Rong, Jing; Zhao, Wanxia1,2; Kang, Keke; Long, Lulu; Yao, Xiaojiang5
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| 刊名 | CHEMICAL ENGINEERING JOURNAL
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| 出版日期 | 2022-09-15 |
| 卷号 | 444页码:16 |
| ISSN号 | 1385-8947 |
| 关键词 | NH3-SCR reaction Morphology Crystal-plane CeO2-TiO2 catalysts Reaction mechanism |
| DOI | 10.1016/j.cej.2022.136488 |
| 通讯作者 | Yao, Xiaojiang(yaoxj@cigit.ac.cn) |
| 英文摘要 | CeO2-TiO2 catalysts with four different morphologies were successfully synthesized by a hydrothermal method and tested for selective catalytic reduction of NOx with NH3 (NH3-SCR). For the four catalysts, CeO2-TiO2 nanocubes (CT-NC) and nanorods (CT-NR) preferentially exposed {1 0 0} and {1 1 0} facets, respectively; furthermore, nanosheets (CT-NS) and nanospheres (CT-NH) mainly exposed {111} facet. Interestingly, CT-NH catalyst showed the best NH3-SCR performance and the NOx conversion exceeded 97% at 325 degrees C. Through a series of characteristic methods manifested that the short-range ordered structure of Ce-O-Ti in CT-NH catalyst provided stronger surface acidic sites to promote the high-temperature activity. Moreover, the abundant Ce3+ species and appropriate reduction ability on {111} facet of CT-NH catalyst also caused outstanding deNOx activity. Reaction mechanism study showed that the Langmuir-Hinshelwood (L-H) mechanism and Eley-Rideal (E-R) mechanism existed simultaneously on all catalysts in NH3-SCR reaction. Meaningfully, two types of E-R mechanism were present on CT-NH catalyst, while L-H mechanism was dominant. |
| 资助项目 | National Natural Science Foun-dation of China[22076180] ; National Natural Science Foun-dation of China[21876168] ; Youth Innovation Promotion Association of CAS[2019376] ; Chongqing Bayu Scholar Program[YS2020048] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCIENCE SA |
| WOS记录号 | WOS:000800389500003 |
| 源URL | [http://119.78.100.138/handle/2HOD01W0/16281]  |
| 专题 | 中国科学院重庆绿色智能技术研究院 |
| 通讯作者 | Yao, Xiaojiang |
| 作者单位 | 1.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Res Ctr Atmospher Environm, Key Lab Reservoir Aquat Environm, Chongqing 400714, Peoples R China 2.Univ Chinese Acad Sci UCAS Chongqing, Coll Resources & Environm, Chongqing Sch, Chongqing 400714, Peoples R China 3.Chongqing Jiaotong Univ, Coll River & Ocean Engn, Chongqing 400074, Peoples R China 4.Univ Chinese Acad Sci, Sch Resources & Environm, Beijing 100049, Peoples R China 5.Chinese Acad Sci, Inst Green & Intelligent Technol, Fangzheng Ave 266, Chongqing 400714, Peoples R China |
| 推荐引用方式 GB/T 7714 | Luo, Wen,Rong, Jing,Zhao, Wanxia,et al. Morphology and crystal-plane dependence of CeO2-TiO2 catalysts: Activity and mechanism for the selective catalytic reduction of NOx with NH3[J]. CHEMICAL ENGINEERING JOURNAL,2022,444:16. |
| APA | Luo, Wen,Rong, Jing,Zhao, Wanxia,Kang, Keke,Long, Lulu,&Yao, Xiaojiang.(2022).Morphology and crystal-plane dependence of CeO2-TiO2 catalysts: Activity and mechanism for the selective catalytic reduction of NOx with NH3.CHEMICAL ENGINEERING JOURNAL,444,16. |
| MLA | Luo, Wen,et al."Morphology and crystal-plane dependence of CeO2-TiO2 catalysts: Activity and mechanism for the selective catalytic reduction of NOx with NH3".CHEMICAL ENGINEERING JOURNAL 444(2022):16. |
入库方式： OAI收割
来源：重庆绿色智能技术研究院
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