A theoretical and experimental XAS study of monolayer dispersive supported CuO/gamma-Al2O3 catalysts
文献类型：期刊论文
| 作者 | Chen DL(陈栋梁) ; Wu ZY(吴自玉); Chen, DL; Wu, ZY
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| 刊名 | RADIATION PHYSICS AND CHEMISTRY
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| 出版日期 | 2006 |
| 卷号 | 75期号:11页码:1921-1925 |
| 关键词 | monolayer dispersion Cuo/gamma-Al2O3 catalysts XAS MS calculation |
| 通讯作者 | CAS, Beijing Synchrotron Radiat Facil, Inst High Energy Phys, Beijing 100049, Peoples R China |
| 英文摘要 | The local structures of supported CuO/gamma-Al2O3 monolayer dispersive catalysts with different CuO loadings have been investigated by EXAFS and multiple scattering XANES simulations. The EXAFS results show that the first nearest neighbors around the Cu atoms in the CuO/gamma-Al2O3 catalysts are similar to that of the polycrystalline CuO powder, which is independent of the CuO loadings. Moreover, the Cu K-XANES FEFF8 calculations for CuO reveal that the monolayer-dispersed CuO species are of small distorted (CUO4)(m)(n+) clusters, which is mainly composed of a distorted CuO6 octahedron incorporated in the surface octahedral vacant sites of the gamma-Al2O3 support. We consider that the CuO species for the CuO/gamma-Al2O3 catalysts with loadings of 0.4 and 0.8 mmol/100m(2) are distorted (CuO4)(m)(n+) clusters composed mainly of a distorted CuO6 octahedron incorporated in the surface octahedral vacant sites of the gamma-Al2O3 support after calcinations at high temperature in air for a few hours. On the contrary, for the CuO/gamma-Al2O3 with loading of 1.2mmol/100m(2), the local structure of Cu atoms in CuO/y-Al2O3 is similar to that of polycrystalline CuO powder. (c) 2006 Elsevier Ltd. All rights reserved. |
| 学科主题 | Chemistry; Nuclear Science & Technology; Physics |
| 类目[WOS] | Chemistry, Physical ; Nuclear Science & Technology ; Physics, Atomic, Molecular & Chemical |
| 研究领域[WOS] | Chemistry ; Nuclear Science & Technology ; Physics |
| 原文出处 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000242185600092 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/239581]  |
| 专题 | 高能物理研究所_多学科研究中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Chen DL,Wu ZY,Chen, DL,et al. A theoretical and experimental XAS study of monolayer dispersive supported CuO/gamma-Al2O3 catalysts[J]. RADIATION PHYSICS AND CHEMISTRY,2006,75(11):1921-1925. |
| APA | 陈栋梁,吴自玉,Chen, DL,&Wu, ZY.(2006).A theoretical and experimental XAS study of monolayer dispersive supported CuO/gamma-Al2O3 catalysts.RADIATION PHYSICS AND CHEMISTRY,75(11),1921-1925. |
| MLA | 陈栋梁,et al."A theoretical and experimental XAS study of monolayer dispersive supported CuO/gamma-Al2O3 catalysts".RADIATION PHYSICS AND CHEMISTRY 75.11(2006):1921-1925. |
入库方式： OAI收割
来源：高能物理研究所
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