Effects of comonomer on active center distribution of TCl4/MgCl2-AlEt3 catalyst in ethylene/1-hexene copolymerization
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- 作者：Tao Xu ; Hongrui Yang ; Zhisheng Fu ; Zhiqiang Fan ; fanzq@zju.edu.cn" class="auth_mail" title="E-mail the corresponding author
- 关键词：Ethylene ; 1-Hexene ; Comonomer effect ; Ziegler&ndash ; Natta catalyst ; Active center distribution
- 刊名：Journal of Organometallic Chemistry
- 出版年：2015
- 出版时间：1 December 2015
- 年：2015
- 卷：798
- 期：part_P2
- 页码：328-334
- 全文大小：1000 K
文摘
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Ethylene/1-hexene copolymerization with supported Z-N catalyst conducted under different [1-hexene].
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Number of active centers and rate constants of ethylene and 1-hexene insertion in the active centers were determined.
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Polymerization activity and number of active centers were significantly enhanced by adding 1-hexene.
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The rate constant of ethylene insertion slightly changed with [1-hexene].
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The rate constant of 1-hexene insertion was markedly lowered by increasing [1-hexene].