THE IMPORTANCE OF WATER IN THE MECHANISM OF METHANOL DECOMPOSITION ON ZNO

被引：28

作者：

CHADWICK, D

ZHENG, KG

机构：

[1] Department of Chemical Engineering and Chemical Technology, Imperial College of Science, Technology and Medicine, London

来源：

CATALYSIS LETTERS | 1993年 / 20卷 / 3-4期

关键词：

METHANOL; WATER; ZNO; TPD;

D O I：

10.1007/BF00769295

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 decomposition of methanol on ZnO has been investigated by temperature programmed desorption. The main decomposition products were CO and H-2 With only a small amount of CO2. The influence of water on methanol decomposition has been studied by a series of quantitative co-adsorption experiments. As the amount of coadsorbed water was increased, the CO yield decreased whereas that of the CO2 increased and went through a maximum. This indicated that water and methanol competed for the same adsorption sites. The results suggest that methanol (or dehydrogenated intermediate) reacts with coadsorbed water to form CO2 and H-2. Preadsorbed or residual water give similar results.

引用

页码：231 / 242

页数：12

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