A kinetic study of methanol decomposition catalyzed over plate-type palladium catalyst

被引：21

作者：

Shiizaki, S ^{[1
]}

Nagashima, I

Matsumura, Y

Haruta, M

机构：

[1] Kawasaki Heavy Ind Ltd, Akashi Tech Inst, Akashi, Hyogo 6738666, Japan

[2] AIST, Osaka Natl Res Inst, Osaka 5638577, Japan

来源：

CATALYSIS LETTERS | 1998年 / 56卷 / 04期

关键词：

reaction rate; reaction mechanism; methanol decomposition; palladium;

D O I：

10.1023/A:1019077616888

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：

A kinetic study of the catalytic methanol decomposition to carbon monoxide and hydrogen has been carried out in the pressure range of methanol up to 8 atm at 200 and 250 degrees C over a palladium catalyst supported on an oxidized aluminum plate. The reaction pathway can be proposed as (i) dissociative adsorption of methanol to methoxyl groups and hydrogen adsorbed on palladium sites, (ii) decomposition of the methoxyl groups to carbon monoxide and hydrogen adsorbed, and (iii) desorption of the surface carbon monoxide and hydrogen species. It is suggested that the second step is rate-determining and the surface hydrogen species enhance the decomposition of the methoxyl groups.

引用

页码：227 / 230

页数：4

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