双（环戊二烯基）二氯化锆载体催化剂催化乙烯／α－烯烃共聚合  

Ethylene/α-Olefin Copolymerization with Supported Cp_2ZrCl_2 Catalysts

作　　者：刘胜生[1] 于广谦[1] 黄葆同[1] 

机构地区：[1]中国科学院长春应用化学研究所

出　　处：《应用化学》1995年第5期1-4,共4页Chinese Journal of Applied Chemistry

基　　金：国家自然科学基金资助项目

摘　　要：合成了３种Ｚｒ／甲基铝氧烷（ＭＡＯ）／ＳｉＯ２型载体催化剂。考察了不同ＭＡＯ投料量对载锆反应及催化活性的影响。研究了乙烯聚合及乙烯／α－烯烃共聚合。结果表明，该催化剂对己烯和辛烯有很强的共聚作用，而对癸烯的共聚能力较弱。解释了α－烯烃碳链增长对乙烯／α－烯烃共聚催化活性的影响。ＳＥＭ分析表明，α－烯烃的加入有利于聚合物形态的改善。Supported Zr/MAO/SiO_2 catalysts with different Zr content have been synthe-sized.The influence of the amount of methylaluminoxane in reactants on the Zr content inthe catalysts and the catalytic activity has been examined.Copolymerization of ethylene withlinear 1-alkenes by the catalysts was investigated.It was found that hexene-1 and octene-1were highly incorporated,while for decene-1,the copolymers contained low comonomercomponent. The effect of chain length of α-olfin on the catalytic activity has been explained. It is observed from SEM that α-olefin in the copolymers can improve polymer particle mor-phology.

关 键 词：催化剂 环戊二烯基 乙烯 聚合反应 锆 

分 类 号：TQ426.92[化学工程] O632.12[理学—高分子化学]