乙烯齐聚均相铬系催化剂的研究进展

Progress in Research of Ethylene Oligomerization by Chromium-Based Homogeneous Catalyst

综述了近年来铬系催化剂催化乙烯齐聚反应的研究进展。主要介绍了N型、N^O型、P^B型、P型、PNP型、PN^NP型和S^N^S型配体的研究结果。目前,对乙烯三聚催化剂配体的研究主要集中在吡咯类化合物方面,对乙烯四聚催化剂配体的研究主要集中在PNP型配体方面。高选择性和高活性合成1-己烯和1-辛烯的催化体系是今后的主要发展方向。介绍了乙烯三聚、四聚的反应机理,对铬系催化剂的研究具有重要的指导意义。

The recent advances in study of chromium - based homogeneous catalysts used in ethylene oligomerization were reviewed. N type, N^O type, P^B type, P type, PNP type, PN^NP type and S^N^S type ligands were introduced. Research of catalysts for ethylene trimerization was focused on pyrrolyl compounds as N type of ligands. For catalysts of ethylene tetramerization PNP type ligands were mainly investigated. Highly selective and active catalyst systems for productions of 1 -hexene and 1 - octene will be the main aims in future research works. Mechanisms of trimerization and tetramerization of ethylene were also discussed.