The synergistic effect of the structural precursors of Cu/ZnO/Al2O3 catalysts for water-gas shift reaction

被引：31
作者：
Fu, Wei [1 ]
Bao, Zhenghong [1 ]
Ding, Weizhong [1 ]
Chou, Kuochih [1 ,2 ]
Li, Qian [1 ]
机构：
[1] Shanghai Univ, Shanghai Key Lab Modern Met & Mat Proc, Shanghai 200072, Peoples R China
[2] Univ Sci & Technol Beijing, Dept Phys Chem, Beijing 100083, Peoples R China
来源：
CATALYSIS COMMUNICATIONS | 2011年 / 12卷 / 06期
基金：
国家高技术研究发展计划(863计划);
关键词：
Water-gas shift reaction; Synergistic action; Structural precursor; Hydrotalcite; Aurichalcite; OXIDE CATALYSTS; CARBON-MONOXIDE; ZNO CATALYSTS; ZINC-OXIDE; COPPER; CU; HYDROTALCITE; METAL; REDUCTION; HYDROGEN;
D O I：
10.1016/j.catcom.2010.11.017
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The Cu/ZnO/Al2O3 catalysts (Cu/Zn = 1, Al = 4-24 mol%) prepared by co-precipitation were investigated for low-temperature water-gas shift reaction (WGSR) in H-2-rich feed gas and characterized by means of XRD, DSC and TPR. The synergistic effect of the structural precursors was detected in catalyst containing Al level of 12 mol%, in which CO conversion reaches to 97.5% at 513 K. It suggests that aurichalcite has been partially intercalated into the hydrotalcite and assimilated the surrounding structure during precipitation, which eventually enhances the interaction between the active centers and supports of the catalyst. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：505 / 509
页数：5
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