Coking mechanism of zeolite for supercritical fluid alkylation of benzene

被引：4

作者：

Gao, Y ^{[1
]}

Shi, YF ^{[1
]}

Zhu, ZN ^{[1
]}

Yuan, WK ^{[1
]}

机构：

[1] E CHINA UNIV SCI & TECHNOL,UNILAB RES CTR CHEM REACT ENGN,SHANGHAI 200237,PEOPLES R CHINA

来源：

HIGH PRESSURE CHEMICAL ENGINEERING | 1996年 / 12卷

基金：

中国国家自然科学基金;

关键词：

zeolite; coke precursor; supercritical fluid; deactivation;

D O I：

10.1016/S0921-8610(96)80027-6

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Alkylation of benzene with ethylene over Y-type zeolite has been carried out under supercritical conditions. Two aspects of the reaction have been paid attention to: slowing down the deactivation rate and decreasing the by product selectivity. Experiments have revealed the existence of some coke precursors that are partly removed from the catalyst surface. By product xylenes are decreased and are explained due to high diffusivity in the supercritical fluid.

引用

页码：151 / 156

页数：6