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题名: Support effect of zinc tin oxide on gold catalyst for CO oxidation reaction
作者: Li, W; Du, LY; Jia, CJ; Si, R
刊名: CHINESE JOURNAL OF CATALYSIS
出版日期: 2016
卷号: 37, 期号:10, 页码:1702-1711
关键词: Gold catalyst ; Zinc tin oxide ; Carbon monoxide oxidation ; X-ray absorption fine structure ; Structure-activity relationship
DOI: 10.1016/S1872-2067(16)62468-3
通讯作者: Si, R (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, Key Lab Interfacial Phys & Technol, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China. ; Jia, CJ (reprint author), Shandong Univ, Sch Chem & Chem Engn, Key Lab Special Aggregated Mat, Key Lab Colloid & Interface Chem, Jinan 250100, Shandong, Peoples R China.
文章类型: 期刊论文
英文摘要: Nanostructured gold catalyst supported on metal oxide is highly active for the CO oxidation reaction. In this work, a new type of oxide support, zinc tin oxide, has been used to deposit 0.7 wt% Au via a deposition-precipitation method. The textural properties of Zn2SnO4 support have been tuned by varying the molar ratio between base (N2H4 center dot H2O) and metal ion (Zn2+) to be 4/1, 8/1 and 16/1. The catalytic tests for CO oxidation reaction revealed that the reactivity on Au-Zn2SnO4 with N2H4 center dot H2O/Zn2+ = 8/1 was the highest, while the reactivity on Au-Zn2SnO4 with N2H4 center dot H2O/Zn2+ = 16/1 was almost identical to that of the pure support. Both fresh and used catalysts have been characterized by multiple techniques including nitrogen adsorption-desorption, X-ray diffraction, transmission electron microscopy, high-angle annular dark-field scanning transmission electron microscopy, X-ray photoelectron spectroscopy, X-ray adsorption fine structure, and temperature-programmed reduction by hydrogen. These demonstrated that the textural properties, especially pore volume and pore size distribution, of Zn2SnO4 play crucial roles in the averaged size of gold nanoparticles, and thus determine the catalytic activity of Au-Zn2SnO4 for CO oxidation. (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:000386865300015
ISSN号: 0253-9837
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.sinap.ac.cn/handle/331007/26641
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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