Oxidation of CH4 and CO2 reforming of CH4 over Rh/ZrO2 catalysts with different metal dispersions

被引：2
|
作者：
Ito, S [1 ]
Nagashima, K [1 ]
Araki, R [1 ]
Yarimizu, T [1 ]
Kameoka, S [1 ]
Kunimori, K [1 ]
机构：
[1] Univ Tsukuba, Inst Mat Sci, Tsukuba, Ibaraki 3058573, Japan
来源：
NIPPON KAGAKU KAISHI | 2000年 / 08期
关键词：
D O I：
10.1246/nikkashi.2000.561
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Oxidation of CH4 under lean condition ((8) over bar 00 ppm) and CO2 reforming of CH4 were carried out using Rh/ZrO2 catalysts with different metal dispersions. It was found that both reactions showed a similar structure-sensitive behavior: The TOF decreased with increasing of Rh dispersion. It is suggested that the rate determining step is dissociative adsorption of CH4 or both reactions, and strong Rh-O bonds in smaller Rh crystallites may lead to a suppression of the dissociative adsorption of CH4 on the Rh surface.
引用
收藏
页码：561 / 566
页数：6
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