Copper-ceria sheets catalysts: Effect of copper species on catalytic activity in CO oxidation reaction
文献类型：期刊论文
| 作者 | Du, LY; Wang, WW; Yan, H; Wang, X; Jin, Z; Song, QS; Si, R; Jia, CJ |
| 刊名 | JOURNAL OF RARE EARTHS
 |
| 出版日期 | 2017 |
| 卷号 | 35期号:12页码:1186-1196 |
| 关键词 | CARBON-MONOXIDE PREFERENTIAL OXIDATION SELECTIVE OXIDATION CUO-CEO2 CATALYSTS CUO/CEO2 CATALYSTS OXIDE CATALYSTS SHAPE GOLD CUO IDENTIFICATION |
| ISSN号 | 1002-0721 |
| DOI | 10.1016/j.jre.2017.04.005 |
| 文献子类 | 期刊论文 |
| 英文摘要 | Copper-ceria sheets catalysts with different loadings of copper (2 wt.%, 5 wt.% and 10 wt.%) supported on ceria nanosheets were synthesized via a deposition-precipitation (DP) method. The prepared catalysts were systematically characterized with various structural and textural detections including X-ray diffraction (XRD), Raman spectra, transmission electron microscopy (TEM), X-ray absorption fine structure (XAFS), and temperature-programmed reduction by hydrogen (H-2-TPR), and tested for the CO oxidation reaction. Notably, the sample containing 5 wt.% of Cu exhibited the best catalytic performance as a result of the highest number of active CuO species on the catalyst surface. Further increase of copper content strongly affects the dispersion of copper and thus leads to the formation of less active bulk CuO phase, which was verified by XRD and H-2-TPR analysis. Moreover, on the basis of in-situ diffuse reflectance infrared Fourier transform spectroscopy (in-situ DRIFTS) results, the surface Cu+ species, which are derived from the reduction of Cu2+, are likely to play a crucial role in the catalyzing CO oxidation. Consequently, the superior catalytic performance of the copper-ceria sheets is mainly attributed to the highly dispersed CuOx cluster rather than Cu-[O-x]-Ce structure, while the bulk CuO phase is adverse to the catalytic activity of CO oxidation. (c) 2017 Published by Elsevier B.V. on behalf of Chinese Society of Rare Earths. |
| 语种 | 英语 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/30888]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 作者单位 | 1.Shandong Univ, Sch Chem & Chem Engn, Key Lab Special Aggregated Mat, Key Lab Colloid & Interface Chem, Jinan 250100, Shandong, Peoples R China 2.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China |
| 推荐引用方式 GB/T 7714 | Du, LY,Wang, WW,Yan, H,et al. Copper-ceria sheets catalysts: Effect of copper species on catalytic activity in CO oxidation reaction[J]. JOURNAL OF RARE EARTHS,2017,35(12):1186-1196. |
| APA | Du, LY.,Wang, WW.,Yan, H.,Wang, X.,Jin, Z.,...&Jia, CJ.(2017).Copper-ceria sheets catalysts: Effect of copper species on catalytic activity in CO oxidation reaction.JOURNAL OF RARE EARTHS,35(12),1186-1196. |
| MLA | Du, LY,et al."Copper-ceria sheets catalysts: Effect of copper species on catalytic activity in CO oxidation reaction".JOURNAL OF RARE EARTHS 35.12(2017):1186-1196. |
入库方式： OAI收割
来源：上海应用物理研究所
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