Influence of different impregnation modes on the properties of CuO–CeO2/γ-Al2O3 catalysts for NO reduction by CO
文献类型：期刊论文
| 作者 | Sun, Jingfang3; Ge, Chengyan1; Yao, Xiaojiang4 ; Zou, Weixin3; Hong, Xi2; Tang, Changjin3; Dong, Lin3
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| 刊名 | Applied Surface Science
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| 出版日期 | 2017 |
| 卷号 | 426页码:279-286 |
| ISSN号 | 01694332 |
| DOI | 10.1016/j.apsusc.2017.07.069 |
| 英文摘要 | A series of ceria modified CuO/γ-Al2O3 (CuO-CeO2/γ-Al2O3) catalysts were prepared via stepwise impregnation (CuCeAl-SI) and co-impregnation (CuCeAl-CI) method and tested in the model reaction of NO reduction by CO. It was found that the influence of impregnation modes on the catalytic properties of CuCeAl samples mainly lies on the control of ceria particle sizes and modulation of the distribution of various copper species. In both impregnation modes, ceria was mainly spread on γ-Al2O3 as small particles while copper species were highly dispersed. A quantitative estimation of copper species was tentatively provided via a combined surface acid leaching experiment and H2-TPR characterization for the first time. The results showed that for CuCeAl-CI catalyst, about 55% and 25% copper species were dispersed on γ-Al2O3 and nanosized ceria, respectively, while about 20% was migrated into ceria lattice during the calcination process. In contrast, in CuCeAl-SI sample, the corresponding values changed to about 25%, 70% and 5%, respectively. The synergistic effect between copper species and ceria can promote the improvement of catalytic performance, which results in higher activity of CuCeAl-SI than that of CuCeAl-CI catalyst. © 2017 Elsevier B.V. |
| 语种 | 英语 |
| 源URL | [http://119.78.100.138/handle/2HOD01W0/9886]  |
| 专题 | 中国科学院重庆绿色智能技术研究院 |
| 作者单位 | 1.School of Chemistry and Chemical Engineering, Yancheng Institute of Technology, Yancheng; 224051, China; 2.School of Environmental Sciences and Engineering, Nanjing Tech University, Nanjing; 211816, China 3.Jiangsu Key Laboratory of Vehicle Emissions Control, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing; 210093, China; 4.Research Center for Atmospheric Environment, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing; 400714, China; |
| 推荐引用方式 GB/T 7714 | Sun, Jingfang,Ge, Chengyan,Yao, Xiaojiang,et al. Influence of different impregnation modes on the properties of CuO–CeO2/γ-Al2O3 catalysts for NO reduction by CO[J]. Applied Surface Science,2017,426:279-286. |
| APA | Sun, Jingfang.,Ge, Chengyan.,Yao, Xiaojiang.,Zou, Weixin.,Hong, Xi.,...&Dong, Lin.(2017).Influence of different impregnation modes on the properties of CuO–CeO2/γ-Al2O3 catalysts for NO reduction by CO.Applied Surface Science,426,279-286. |
| MLA | Sun, Jingfang,et al."Influence of different impregnation modes on the properties of CuO–CeO2/γ-Al2O3 catalysts for NO reduction by CO".Applied Surface Science 426(2017):279-286. |
入库方式： OAI收割
来源：重庆绿色智能技术研究院
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