CO oxidation over Au/ZrLa-doped CeO2 catalysts: Synergistic effect of zirconium and lanthanum
Yang, Q; Du, LY; Wang, X; Jia, CJ; Si, R; Yang, Q (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China.
2016
发表期刊CHINESE JOURNAL OF CATALYSIS
ISSN0253-9837
卷号37期号:8页码:1331-1339
文章类型期刊论文
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.
关键词Gold Catalyst Doped Ceria Oxygen Vacancy Carbon Monoxide Oxidation Metal-support Interaction
DOI10.1016/S1872-2067(15)61113-5
收录类别SCI
语种英语
WOS记录号WOS:000381326900018
引用统计
文献类型期刊论文
条目标识符http://ir.sinap.ac.cn/handle/331007/26450
专题中科院上海应用物理研究所2011-2018年
通讯作者Yang, Q (reprint author), 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
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,2016,37(8):1331-1339.
APA Yang, Q,Du, LY,Wang, X,Jia, CJ,Si, R,&Yang, Q .(2016).CO oxidation over Au/ZrLa-doped CeO2 catalysts: Synergistic effect of zirconium and lanthanum.CHINESE JOURNAL OF CATALYSIS,37(8),1331-1339.
MLA Yang, Q,et al."CO oxidation over Au/ZrLa-doped CeO2 catalysts: Synergistic effect of zirconium and lanthanum".CHINESE JOURNAL OF CATALYSIS 37.8(2016):1331-1339.
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