CATALYTIC REACTIONS OF ETHANOL ON H3+XPMO12-XVXO40 CATALYSTS

被引：21

作者：

BIELANSKI, A

POZNICZEK, J

MALECKA, A

机构：

[1] Institute of Catalysis and Surface Phenomena, Polish Academy of Sciences and Jagiellonian University, Chemistry Department, Krakow, 30-060

来源：

REACTION KINETICS AND CATALYSIS LETTERS | 1990年 / 41卷 / 01期

关键词：

D O I：

10.1007/BF02075493

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 catalytic decomposition of ethanol on heteropolyacids (HPA) of the series H3+xPMo12-xVxO40 (x=0,1,2,3) was investigated at 240°C, using a pulse method. It has been shown that besides ethyl ether, ethylene, acetaldehyde and unreacted alcohol, a certain amount of alcohol was irreversibly sorbed by HPA. The amount of the latter decreased with x, which is considered to be due to the tighter bonding of Keggin units (KU) with an increasing number of intramolecular hydrogen bonds. The yield of ethyl ether forming at the surface was almost constant but that of ethylene and acetaldehyde decreased in the series x=0,1,2, which was connected with the increasingly difficult penetration of HPA molecules into the bulk. Some differences in the behavior of the sample with x=3 were the result of partial decomposition of this thermally stable catalyst. © 1990 Akadémiai Kiadó.

引用

页码：127 / 134

页数：8