The role of CaO in the Ziegler-Natta catalyst for propylene polymerization

被引：6
|
作者：
Tangjituabun, Kitti [1 ]
Jongsomjit, Bunjerd [1 ]
Praserthdam, Piyasan [1 ]
机构：
[1] Chulalongkorn Univ, Fac Engn, Dept Chem Engn, Ctr Excellence Catalysis & Catalyt React Engn, Bangkok 10330, Thailand
来源：
CATALYSIS LETTERS | 2006年 / 109卷 / 3-4期
关键词：
Ziegler-Natta catalyst; CaO; MgCl2; ESR; polymerization;
D O I：
10.1007/s10562-006-0071-5
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：
A certain amount of CaO enhanced the activity of Ziegler-Natta catalyst during propylene polymerization, but decreased isotacticity. The results indicated that CaO accelerated the initial polymerization rates and improved catalyst against deactivation without effects on melting point, crystallinity and morphology of polypropylene. The electron spin resonance (ESR) results revealed that CaO facilitated the reduction of Ti4+ species.
引用
收藏
页码：147 / 152
页数：6
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