Water-gas shift activity of ceria supported Au-Re catalysts

被引：18
|
作者：
Caglayan, Burcu Selen [1 ]
Aksoylu, A. Erhan [1 ]
机构：
[1] Bogazici Univ, Dept Chem Engn, TR-34342 Istanbul, Turkey
来源：
CATALYSIS COMMUNICATIONS | 2011年 / 12卷 / 13期
关键词：
Water-gas shift; Fuel processing; Bimetallic gold catalysts; Au-Re; AU/CEO2; CATALYSTS; GOLD CATALYSTS; CO; OXIDATION; AU/FE2O3; KINETICS; PT/CEO2;
D O I：
10.1016/j.catcom.2011.04.016
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：
Au-Re/ceria, Au/ceria and Re/ceria catalysts were prepared using deposition precipitation and impregnation techniques for Au and Re addition, respectively, except the sample prepared by sequential impregnation. Catalysts were characterized by HRTEM-EDS, SEM-EDS, XPS and XRD. WGS activity tests on the samples were performed in the temperature range 200-450 degrees C. The effects of Re incorporation, metal addition sequence, space velocity and H(2)O/CO ratio on the catalytic performance were investigated. The novel Au-Re/ceria catalysts showed high activity in WGS reaction, especially at high H(2)O/CO ratios, led by the presence of catalytically active and steam tolerant sites formed on the bimetallic catalysts. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：1206 / 1211
页数：6
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