Reactions of adsorbed CH3 species with CO2 on Rh/SiO2 catalyst

被引：36

作者：

Rasko, J ^{[1
]}

Solymosi, F ^{[1
]}

机构：

[1] HUNGARIAN ACAD SCI,REACT KINET RES GRP,H-6701 SZEGED,HUNGARY

来源：

CATALYSIS LETTERS | 1997年 / 46卷 / 3-4期

关键词：

adsorption of CH3 on silica to give methoxy; adsorption of CH3 radicals on Rh/SiO2 catalyst; reaction of adsorbed CH3 with gaseous CO2; reaction steps in the dry reforming of methane; use of FTIR combined with mass spectrometry;

D O I：

10.1023/A:1019035022205

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：

Methyl radicals, produced by the high temperature pyrolysis of azomethane, were adsorbed on Rh/SiO2. The reaction between adsorbed CH3 and gaseous CO2 has been followed by determining the intensity changes of the asymmetric stretch of CH3 and the composition of the gas phase. It was found that adsorbed CH3 reacts with CO2 at and above 373 K. It is assumed that similar processes may also take place in the dry reforming of methane, and that they are responsible for the lack of carbon deposition on sup ported Rh catalysts.

引用

页码：153 / 157

页数：5

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