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

Kitti Tangjituabun; Sang Yull Kim; Yuichi Hiraoka; Toshiaki Taniike; Minoru Terano Bunjerd Jongsomjit; Piyasan Praserthdam

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

Papers | Updated：2021-06-21

- POISONING OF ACTIVE SITES ON ZIEGLER-NATTA CATALYST FOR PROPYLENE POLYMERIZATION
- Vol. 26, Issue 5, Pages: 547-552(2008)
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- Published：20 September 2008
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Kitti Tangjituabun, Sang Yull Kim, Yuichi Hiraoka, et al. POISONING OF ACTIVE SITES ON ZIEGLER-NATTA CATALYST FOR PROPYLENE POLYMERIZATION[J]. 2008, 26(5): 547-552.
DOI：

Kitti Tangjituabun, Sang Yull Kim, Yuichi Hiraoka, et al. POISONING OF ACTIVE SITES ON ZIEGLER-NATTA CATALYST FOR PROPYLENE POLYMERIZATION[J]. 2008, 26(5): 547-552. DOI：

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 caused a decrease in activity through the reduction of the number of active sites whereas no effect on the degree of isotacticity was observed.

Abstract

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

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