POISONING OF ACTIVE SITES ON ZIEGLER-NATTA CATALYST FOR PROPYLENE POLYMERIZATION

被引：0

作者：

Kitti Tangjituabun ^{[1
]}

Sang Yull Kim ^{[1
]}

Yuichi Hiraoka ^{[1
]}

Toshiaki Taniike ^{[1
]}

Minoru Terano ^{[1
]}

Bunjerd Jongsomjit ^{[2
]}

Piyasan Praserthdam ^{[2
]}

机构：

[1] School of Materials Science,Japan Advanced Institute of Science and Technology,Ishikawa -,Japan

[2] Department of Chemical Engineering,Chulalongkorn University,Bangkok ,Thailand

来源：

Chinese Journal of Polymer Science | 2008年 / 05期

关键词：

Poisoning material; Ziegler-Natta catalyst; Stopped-flow propylene polymerization;

D O I：

暂无

中图分类号：

O631.5 [聚合反应、缩聚反应];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

<正>The effects of poisoning materials on catalytic activity and isospecificity of the supported Ziegler-Natta catalyst were investigated.A minor amount of simple structure of Lewis base,i.e.,methanol,acetone,ethyl acetate,was introduced into the catalyst slurry for partial poisoning catalytic active centers.It was found that the variations in deactivation power were in the order of methanol>acetone>ethyl acetate.The kinetic investigation via stopped-flow polymerization showed that poisoning compounds caused a decrease in activity through the reduction of the number of active sites whereas no effect on the degree of isotacticity was observed.

引用

页码：547 / 552

页数：6