Preparation of a mesoporous ceria-zirconia supported Ni-Fe catalyst for the high temperature water-gas shift reaction

被引：32
|
作者：
Watanabe, Keita [2 ]
Miyao, Toshihiro [1 ]
Higashiyama, Kazutoshi [1 ]
Yamashita, Hisao [1 ]
Watanabe, Masahiro [1 ]
机构：
[1] Univ Yamanashi, Fuel Cell Nanomat Ctr, Kofu, Yamanashi 4000021, Japan
[2] Univ Yamanashi, Interdisciplinary Grad Sch Med & Engn, Kofu, Yamanashi 4008510, Japan
来源：
CATALYSIS COMMUNICATIONS | 2011年 / 12卷 / 11期
关键词：
Ceria-zirconia; Ni-Fe; Water-gas shift; Hard-template method; Hydrogen production; PEFC; CARBON-MONOXIDE; OXIDATION;
D O I：
10.1016/j.catcom.2011.03.003
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：
A Ni-Fe/ceria-zirconia catalyst with ordered mesostructure was prepared by the hard-template method employing mesoporous silica (KIT-6) as a template to impart its highly ordered structure to the ceria-zirconia mixed oxide support. Catalytic activities of the Ni-Fe/CeO(2)-ZrO(2) catalyst for the water-gas shift reaction were superior to those of a commercial Fe-Cr-based catalyst. The ordered structure of Ni-Fe/CeO(2)-ZrO(2) catalyst became more stable compared to one prepared without zirconia due to structural stabilization of the mixed oxide by added zirconia in the framework. Alloying of Ni and Fe and enhanced mobility of lattice oxygen in the oxide support may promote its catalytic activity and selectivity for the water-gas shift reaction. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：976 / 979
页数：4
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