Catalytic steam reforming of methane over Ce0.9Gd0.1O2-x

被引：106

作者：

Ramírez-Cabrera, E

Atkinson, A

Chadwick, D

机构：

[1] Univ London Imperial Coll Sci Technol & Med, Dept Mat, London SW7 2AZ, England

[2] Univ London Imperial Coll Sci Technol & Med, Dept Chem Engn, London SW7 2AZ, England

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2004年 / 47卷 / 02期

基金：

英国工程与自然科学研究理事会;

关键词：

cerium oxide; steam reforming of methane; temperature-programmed techniques; fuel cells;

D O I：

10.1016/j.apcatb.2003.08.008

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：

Ce0.9Gd0.1O2-x (CGO) was found to have useful methane steam reforming activity at solid oxide fuel cell (SOFC) operating temperatures producing H-2, CO and some CO2. The turnover frequency for steam reforming at 900 degreesC and activation energy (153 +/- 10 kJ mol(-1)) are approximately equal to those for reaction between CGO and dry methane. This is consistent with a reaction mechanism controlled by the slow reaction of methane with oxygen in CGO and a facile reaction between steam and CGO to replenish the oxygen. The addition of hydrogen to the inlet stream inhibited the reforming rate. CGO was found to be extremely resistant to carbon deposition in steam reforming conditions. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：127 / 131

页数：5

共 20 条

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