Catalytic methanol decomposition over palladium deposited on mesoporous cerium oxide

被引：28

作者：

Kapoor, MP

Ichihashi, Y

Kuraoka, K

Shen, WJ

Matsumura, Y ^{[1
]}

机构：

[1] Res Inst Innovat Technol Earth, Kizu, Kyoto 6190292, Japan

[2] Natl Inst Adv Ind Sci & Technol, Osaka 5638577, Japan

来源：

CATALYSIS LETTERS | 2003年 / 88卷 / 1-2期

关键词：

mesoporous cerium oxide; catalyst support; cationic palladium species; methanol decomposition; EXAFS;

D O I：

10.1023/A:1023547219003

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：

Ultrafine palladium particles can be deposited on mesoporous cerium oxide by a deposition-precipitation method. After reduction with hydrogen at 300degreesC, palladium on the mesoporous compound is cationic with a valence close to +1 whereas the particles have a metallic structure. The catalytic activity in selective methanol decomposition to hydrogen and carbon monoxide at 180degreesC is significantly higher than that of palladium supported on non-porous cerium oxide, suggesting that the mesoporous structure is advantageous to the reaction. When the palladium content is high, part of mesopores are probably choked with large palladium particles, which will cause saturation of the activity.

引用

页码：83 / 87

页数：5

共 19 条

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