Metal oxide catalysts for DME steam reforming:: Ga2O3 and Ga2O3-Al2O3 catalysts with and without copper

被引：67

作者：

Mathew, T ^{[1
]}

Yamada, Y ^{[1
]}

Ueda, A ^{[1
]}

Shioyama, H ^{[1
]}

Kobayashi, T ^{[1
]}

机构：

[1] Natl Inst Adv Ind Sci & Technol, New Energy Carrier Res Grp, Res Inst Ubiquitous Energy Devices, Ikeda, Osaka 5638577, Japan

来源：

APPLIED CATALYSIS A-GENERAL | 2005年 / 286卷 / 01期

关键词：

fuel cells; DME steam reforming; Ga2O3-Al2O3; mixed oxides;

D O I：

10.1016/j.apcata.2005.02.030

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：

The steam reforming of dimethyl ether (DME) was performed on Cu/GaxAl10-xO15 and GaxAl10-xO15 catalysts (where `x' varies from 0 to 10). The presence of Ga2O3 in Al2O3 significantly affects the catalytic performance with respect to the DME conversion and the H, yield. It was found that the activity increases with the Ga2O3 concentration for GaxAl10-xO15. The DME steam reforming activity on Cu/GaxAl10-xO15 showed an improvement in the stability and H-2 yield as the Ga2O3 concentration increased. A correlation between the XPS results and the DME steam reforming activity for Cu/Ga(x)A(10-x)O(15) reveals that the heterogeneity of the surface is important for achieving a high H-2 yield. The specific interaction between Ga2O3 and Cu plays a decisive role in the distribution of Cu, which makes Cu/GaxAl10-xO15 active and stable for the reaction. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：11 / 22

页数：12

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