Polymer growth mode on the heterogeneous Ziegler-Natta catalyst: active sites at the bottom of the growing polymer layer

被引：14

作者：

Kim, SH

Somorjai, GA ^{[1
]}

机构：

[1] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA

[2] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Sci Mat, Berkeley, CA 94720 USA

来源：

CATALYSIS LETTERS | 2000年 / 68卷 / 1-2期

关键词：

Ziegler-Natta; model catalyst; active site; monomer diffusion; X-ray photoelectron spectroscopy; laser reflection interferometry;

D O I：

10.1023/A:1019075218358

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：

By alternating the supply of propylene and ethylene monomers, alternating polypropylene and polyethylene films were produced on one model Ziegler-Natta catalyst. This way, we could show that the active polymerization sites remain under the growing polymer films and thus the monomer molecules must transport through the growing polymer to the active sites.

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收藏

页码：7 / 11

页数：5

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