Activity promotion of anti-sintering AuGMgGa(2)O(4) using ceria in the water gas shift reaction and catalytic combustion reactions

	Activity promotion of anti-sintering AuGMgGa(2)O(4) using ceria in the water gas shift reaction and catalytic combustion reactions
	Zhang, Jing-Cai 2,3; Ren, Guo-Qing 1,2; Pei, Guang-Xian 1,2; Li, Wei-Zhen 2,3
刊名	CHINESE JOURNAL OF CATALYSIS
	2019-04-01
卷号	40 期号:4 页码:600-608
关键词	Gold nanocatalyst CeO2 promoter Magnesium gallate spinel Water gas shift Catalytic combustion
ISSN号	0253-9837
通讯作者	Li, Wei-Zhen(weizhenli@dicp.ac.cn)
英文摘要	Heterogeneous gold nanocatalysts have both inspired researchers with their unique catalytic performance and frustrated them due to the contradictions observed in their activities and stabilities. A recent breakthrough has shown that gold nanoparticles (NPs) can retain their catalytically active size over a MgGa2O4 spinet support upon sintering at high temperatures. Herein, we report the catalytic activity of anti-sintering AuGMgGa(2)O(4) for use in water gas shift reaction (WGSR) and catalytic combustion reactions, and the promoting effect of ceria. Upon adding ceria to 800 degrees C-aged AuGMgGa(2)O(4), the CO conversion in the WGSR was increased from similar to 1.5% to similar to 34.0% at 450 degrees C, and the "light-off" temperatures (T-50) for methane combustion and CO oxidation were decreased by similar to 80 and similar to 100 degrees C, respectively. Characterizations using XRD, HAADF-STEM, EDS mapping, H-2-TPR, XPS, and DRIFTS confirmed the proximate contact of Au with ceria and their significant synergistic effect, which thereby combined the benefits of ceria toward the dissociation of H2O or O-2 and the Au NPs toward activating CO or CH4. These results show that this stepwise stabilization-activation strategy is efficient for rationally constructing stable and active gold nanocatalysts, which may open up possibilities for the wide application of gold nanocatalysts at elevated temperatures. (C) 2019, Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.
资助项目	National Key R&D Program of China[2016YFA0202801] ; National Natural Science Foundation of China[21403213] ; National Natural Science Foundation of China[21673226] ; Transformational Technologies for Clean Energy and Demonstration Strategic Priority Research Program of the Chinese Academy of Sciences[XDA21040200] ; Hundred Talents Programme of the Chinese Academy of Sciences
WOS关键词	TEMPERATURE CO OXIDATION ; GOLD CATALYSTS ; SUPPORT ; CEO2 ; PERFORMANCE ; ACTIVATION ; CEO2-TIO2 ; OXIDE ; AU ; IR
WOS研究方向	Chemistry ; Engineering
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000463466100013
资助机构	National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Transformational Technologies for Clean Energy and Demonstration Strategic Priority Research Program of the Chinese Academy of Sciences ; Transformational Technologies for Clean Energy and Demonstration Strategic Priority Research Program of the Chinese Academy of Sciences ; Hundred Talents Programme of the Chinese Academy of Sciences ; Hundred Talents Programme of the Chinese Academy of Sciences ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Transformational Technologies for Clean Energy and Demonstration Strategic Priority Research Program of the Chinese Academy of Sciences ; Transformational Technologies for Clean Energy and Demonstration Strategic Priority Research Program of the Chinese Academy of Sciences ; Hundred Talents Programme of the Chinese Academy of Sciences ; Hundred Talents Programme of the Chinese Academy of Sciences ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Transformational Technologies for Clean Energy and Demonstration Strategic Priority Research Program of the Chinese Academy of Sciences ; Transformational Technologies for Clean Energy and Demonstration Strategic Priority Research Program of the Chinese Academy of Sciences ; Hundred Talents Programme of the Chinese Academy of Sciences ; Hundred Talents Programme of the Chinese Academy of Sciences ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Transformational Technologies for Clean Energy and Demonstration Strategic Priority Research Program of the Chinese Academy of Sciences ; Transformational Technologies for Clean Energy and Demonstration Strategic Priority Research Program of the Chinese Academy of Sciences ; Hundred Talents Programme of the Chinese Academy of Sciences ; Hundred Talents Programme of the Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/165632]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
通讯作者	Li, Wei-Zhen
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Liaoning, Peoples R China 3.Chinese Acad Sci, Dalian Natl Lab Clean Energy, Dalian 116023, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Jing-Cai,Ren, Guo-Qing,Pei, Guang-Xian,et al. Activity promotion of anti-sintering AuGMgGa(2)O(4) using ceria in the water gas shift reaction and catalytic combustion reactions[J]. CHINESE JOURNAL OF CATALYSIS,2019,40(4):600-608.
APA	Zhang, Jing-Cai,Ren, Guo-Qing,Pei, Guang-Xian,&Li, Wei-Zhen.(2019).Activity promotion of anti-sintering AuGMgGa(2)O(4) using ceria in the water gas shift reaction and catalytic combustion reactions.CHINESE JOURNAL OF CATALYSIS,40(4),600-608.
MLA	Zhang, Jing-Cai,et al."Activity promotion of anti-sintering AuGMgGa(2)O(4) using ceria in the water gas shift reaction and catalytic combustion reactions".CHINESE JOURNAL OF CATALYSIS 40.4(2019):600-608.