期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 38, 期 27, 页码 11847-11852出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2013.07.001
关键词
CuO/CeO2 catalyst; Nb2O5; Water-gas shift; Mobile electronic carriers; Surface basicity
资金
- Department of Science of the People's Republic of China [20771025]
- Technology Development Program of Fuzhou University [2011-XY-5]
A series of CuO/CeO2 catalysts doping with Nb2O5 were fabricated by co-precipitation method. It is found that the introduction of Nb5+ will result in the substitution of Ce4+ with Nb5+, thus creating mobile electronic carriers in the as-prepared catalysts. The characterization results correlating with the catalytic activity evaluation disclose that the catalyst added with 1 wt. % Nb2O5 shows the most mobile electronic carries, certain amount of weak, medium basic sites and enhanced reducibility and chemical adsorption of CO, thus the best catalytic activity for water gas shift reaction. However, excessive Nb2O5 addition prevents the incorporation of Cu2+ into CeO2 lattice and partially covers the surface of CuO and CeO2, resulting in weaken their reducibility and interaction between them, thus leading to inferior catalytic performance. Copyright (C) 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据