应用化学2001，Vol.18Issue(4)：321-323,3.
载体中元素电负性对稀土催化剂聚合活性的影响
Effect of Electronegativity of the EleSupporters on the lymerization Activity of Supported Rare Earth Catalysts
摘要
Abstract
Supported rare earth catalysts were made from Nd (O-i-Pr)3 and the chlorides as well asbromides of the elements of I A and Ⅱ A groups which were used as supporters of the catalyst. In thestudy on the relationship between the composition of supporters and the polymerization activity of bu-tadiene in the presence of the supported rare earth catalysts, it was found that the electronegativity of I A or Ⅱ A elements has an obvious effect on the activity of supported catalysts, that is the activity ofthe supported catalyst increases with the increasing of the electronegativity. This phenomenon is ex-plained in terms of the interaction between the HOMO of the butadiene and the LUMO of theneodymium. This rule also holds in the case when halides of magnesium were used as supporters.关键词
载体稀土催化剂/Ziegler-Natta催化剂/丁二烯聚合/催化活性分类
化学化工引用本文复制引用
张成林,单成基..载体中元素电负性对稀土催化剂聚合活性的影响[J].应用化学,2001,18(4):321-323,3.
