铁催化剂催化1,3-二烯烃聚合的研究进展

Advances in Iron-catalyzed Polymerization of 1,3-Diolefins

天然橡胶的有限供应和对橡胶的高需求促进了合成橡胶的发展。金属催化的配位聚合是当今合成高规整性橡胶材料的主要途径,过渡金属铁催化剂因含量丰富、低价格、低毒性、高活性和高选择性在合成橡胶制备领域受广泛关注。本文总结了Ziegler-Natta三元铁催化剂、N,N-双齿配位、N,N,N-三齿配体配位的铁催化剂在催化1,3-二烯单体聚合中的研究进展,阐述了聚合活性、选择性、聚合物分子量及其分子量分布等催化性能与催化剂组成、结构和聚合条件等因素的关系,为高性能1,3-二烯聚合铁催化剂的设计与合成提供借鉴与思路。

The limited supply of natural rubber and the high demand for rubber have promoted the development of synthetic rubber.Metal-catalyzed coordination polymerisation is the main route for the synthesis of highly regular rubber materials today.Transition metal iron catalysts are of great importance in the preparation of synthetic rubbers due to their abundance,low price,low toxicity,high activity and high selectivity.This work summarizes the recent progress of Ziegler-Natta ternary iron catalysts,N,N-bidentate ligand and N,N,N,-tridentate ligand supported iron catalysts in 1,3-diene monomer polymerization.The relationship between catalytic performance such as polymerization activity,selectivity,polymer molecular weight and its molecular weight distribution,and other factors such as catalyst composition,structure and polymerization conditions are illustrated.This review could provide references and ideas for the design and synthesis of high-performance 1,3-diene polymerization iron catalysts.