非茂金属双核和多核烯烃聚合催化剂研究进展

Research progress of bi-and multi-nuclear nonmetallocene olefin polymerization catalysts

综述了近十年来非茂金属双核和多核烯烃聚合催化剂的研究进展,按中心金属,分别从非茂前过渡金属双核或多核催化剂以及非茂后过渡金属双核或多核催化剂展开进行阐述,对非茂金属双核或多核催化剂与单核催化剂的催化性能和对聚合物结构的影响进行比较,总结了双核和多核催化剂中由于金属的协同作用所产生的显著优点,指出了催化机理的深入研究和高性能双核和多核催化剂的开发是今后的重点发展方向.

In this paper,the research progress of nonmetallocene bi-and multi-nuclear catalysts for olefin polymerization in the past ten years was reviewed.According to the central metals,the early and late transition metal binuclear or polynuclear nonmetallocene catalysts were described respectively.The catalytic performance of nonmetallocene bi-or poly-nuclear catalysts and mononuclear catalysts,and the influence of these catalysts upon the polymer structure were compared,and the remarkable advantages of metal synergism in bi-and poly-nuclear catalysts were summarized.It was pointed out that the in-depth study of catalytic mechanism and the development of high-performance bi-and poly-nuclear catalysts would be the key direction in the future.