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

作　　者：Kitti Tangjituabun Sang Yull Kim Yuichi Hiraoka Toshiaki Taniike Minoru Terano Bunjerd Jongsomjit Piyasan Praserthdam 

机构地区：[1]School of Materials Science,Japan Advanced Institute of Science and Technology,Ishikawa 923-1292,Japan [2]Department of Chemical Engineering,Chulalongkorn University,Bangkok 10330,Thailand

出　　处：《Chinese Journal of Polymer Science》2008年第5期547-552,共6页高分子科学（英文版）

基　　金：The authors gratefully acknowledge the Thailand Research Fund(TRF);Royal Golden Jubilee program for the financial support.

摘　　要：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 cau...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 cau...

关 键 词：Poisoning material Ziegler-Natta catalyst Stopped-flow propylene polymerization 

分 类 号：O631.5[理学—高分子化学]