TiCl_4/MgCl_2催化剂载体掺杂的研究进展  

Progress on TiCl_4/MgCl_2 catalyst based on doped support

作　　者：王航[1] 蒋学[1] 陈永平[1] 傅智盛[1] 范志强[1] 

机构地区：[1]浙江大学高分子科学与工程学系,浙江杭州310027

出　　处：《合成树脂及塑料》2007年第3期71-74,共4页China Synthetic Resin and Plastics

基　　金：国家重点基础研究发展规划项目(2005CB623804);国家自然科学基金资助课题(20474053)

摘　　要：综述了用于烯烃配位聚合的MgCl_2载体掺杂负载型Ziegler-Natta(Z-N)催化剂的研究进展,讨论了此类催化剂用于烯烃聚合的催化活性、活性中心分布、聚合产物的相对分子质量分布及立构规整性的变化等。掺杂MgCl_2负载的Z-N催化剂比常规负载的Z-N催化剂生产的聚烯烃的相对分子质量分布宽,催化活性也有一定的改变。This paper reviewed the latest study on different types of doping MgCl2 support-based Ziegler-Natta catalysts using for olefin coordination polymerization. The catalytic properties of these doped catalysts, such as catalytic activity of olefin polymerization, the catalyst＇s active center distribution, and also the molecular weight distribution （MWD） and isotacticity of polyolefin were investigated. The polyolefin obtained by these doped catalysts have broader MWD and different catalytic activity changes in different reactions.

关 键 词：负载型Ziegler-Natta催化剂 烯烃聚合 掺杂 活性中心 载体 

分 类 号：O643.3[理学—物理化学]