双金属催化剂在调控烯烃聚合性能中的研究进展

Research progress in bimetallic catalysts for olefin polymerization

从性能调控角度出发,综述了近年来双金属催化剂在烯烃聚合中的研究进展。介绍了双金属催化剂在聚合活性、聚合物相对分子质量及分布、支化度和共聚等方面优于单核催化剂的性能特点,揭示了双金属协同效应的内在作用机理,并指出了双金属催化剂当前存在的问题及发展方向。

Based on the different catalytic performances,the recent research progress in bimetallic catalysts was reviewed.The distinctive catalytic advantages of bimetallic catalysts over their monometallic analogues in activity,polymer molecular weight and its distribution,branching degree,as well as copolymerization properties were summarized.The internal catalytic mechanism was also revealed and discussed.Moreover,the current problems and the development direction in this field were put forward herein.