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题名:
CO oxidation over Au/ZrLa-doped CeO2 catalysts: Synergistic effect of zirconium and lanthanum
作者: Yang, Q; Du, LY; Wang, X; Jia, CJ; Si, R
刊名: CHINESE JOURNAL OF CATALYSIS
出版日期: 2016
卷号: 37, 期号:8, 页码:1331-1339
关键词: Gold catalyst ; Doped ceria ; Oxygen vacancy ; Carbon monoxide oxidation ; Metal-support interaction
DOI: 10.1016/S1872-2067(15)61113-5
通讯作者: Yang, Q (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China.
文章类型: 期刊论文
英文摘要: The physicochemical properties of nanosized Au catalysts supported on doped CeO2 and their catalytic performance for the CO oxidation reaction were investigated. The Au/Zr-doped CeO2 catalyst is much more active than undoped Au/CeO2, while Au/ZrLa-doped CeO2 shows the highest activity. Characterization of the catalysts by X-ray diffraction, transmission electron microscopy (TEM), high-resolution TEM, and the X-ray absorption fine structure technique shows high homogeneity of the oxide supports and well-dispersed nanosized Au nanoparticles. Raman spectroscopy, X-ray photoelectron spectroscopy, and H-2-tempeature-programmed reduction show that the surface oxygen species are the main factor for the catalytic activity in the CO oxidation reaction, while the supported Au species can improve the redox properties and create oxygen vacancy sites on the support. The oxidation state of Au is not the main factor governing the activity of Au/doped-CeO2 catalysts. Additionally, the synergistic effect of Zr and La is discussed. (C) 2016, Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.
收录类别: SCI
语种: 英语
WOS记录号: WOS:000381326900018
ISSN号: 0253-9837
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.sinap.ac.cn/handle/331007/26450
Appears in Collections:中科院上海应用物理研究所2011-2017年_期刊论文

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Recommended Citation:
Yang, Q,Du, LY,Wang, X,et al. CO oxidation over Au/ZrLa-doped CeO2 catalysts: Synergistic effect of zirconium and lanthanum[J]. CHINESE JOURNAL OF CATALYSIS,2016-01-01,37(8):1331-1339.
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