EB对负载型Ti-Mg系丙烯聚合催化剂特性的影响  

The Influences of EB on the Characteristics of Supported Ti-Mg Catalyst System for Propylene Polymerization

作　　者：曾金龙[1] 郑荣辉[1] 陈祖炳 叶苏榕 陈慧玲 郑宗敏[1] 

机构地区：[1]厦门大学化学系物理化学研究所 [2]厦门大学分析测试中心

出　　处：《厦门大学学报（自然科学版）》1989年第5期509-513,共5页Journal of Xiamen University：Natural Science

基　　金：国家自然科学基金

摘　　要：研究了作为固体催化剂组份“内酯”和助催剂组份“外酯”的苯甲酸乙酯(EB)的MgCl_2-n-BuOH-SiCl_4-TiCl_4/AlEt_3体系催化剂对丙烯聚合的影响。结果表明,“内酯”EB含量越高,Ti的负载量越低,EB与聚合活性有密切关系。只有通过“内酯”和“外酯”的协合作用,才能有效提高聚丙烯等规度至90％以上。The effect of ethyl beazoate (EB) as d component ( 'interm e·ter' ) and as a co-catalyst ( 'external ester') in the MgCl2-n-BuOH-SiCl4 TiCl4/AlEt3 catalyst system on propylene polymerization was investigated. The results showed that the higher the EB content of the catalyst, the lower the Ti content of the catalyst, the activity of the catalyst for propy-lene polymerization is closely related with EB content. Only if the synergi stci action between the 'internal' and 'external' cster occured, the high stereospecificity (>90%) could be obtained.

关 键 词：苯甲酸乙酯 丙烯 聚合 催化剂 

分 类 号：O632.12[理学—高分子化学]