CuO-CeO2 catalysts synthesized by various methods: Comparative study of redox properties

被引：98
|
作者：
Gurbani, A. [1 ]
Ayastuy, J. L. [1 ]
Gonzalez-Marcos, M. P. [1 ]
Gutierrez-Ortiz, M. A. [1 ]
机构：
[1] Univ Pais Vasco EHU, Fac Ciencia & Tecnol, Dept Ingn Quim, Bilbao 48080, Spain
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2010年 / 35卷 / 20期
关键词：
Copper-ceria; Redox; PROX; CO oxidation; SELECTIVE CO OXIDATION; PREFERENTIAL OXIDATION; COPPER-CERIA; CUO/CEO2; CATALYSTS; COMBUSTION METHOD; CARBON-MONOXIDE; HYDROGEN; GAS; COPRECIPITATION; PERFORMANCE;
D O I：
10.1016/j.ijhydene.2010.04.045
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：
Three different preparation methods have been used to synthesize CuO-CeO2 catalysts with 7 wt.% copper loading: coprecipitation (CP), sol-gel (SG) and urea nitrate combustion (UC). All the samples have been characterized by a series of techniques such as XRD, Raman, TPR, TPD and OSC, in order to understand their different performance in CO oxidation, as a function of redox properties and catalyst structure. Among the catalysts, clearly CuCe-CP shows the lower activity because it presents the structure of a solid solution. CuCe-SG and CuCe-UC catalysts show much better performance in CO oxidation, in accordance to their higher redox capacity. (C) 2010 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：11582 / 11590
页数：9
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