镍配合物催化乙烯低聚/聚合的研究进展

PROGRESS OF NICKEL COMPLEXES AS CATALYSTS FOR ETHYLENE OLIGOMERIZATION/POLYMERIZATION

催化乙烯低聚或聚合的镍配合物催化剂研究,不仅帮助提供探索乙烯配位聚合机理的催化剂模型,更为重要的帮助探讨不同催化剂模型下的催化剂活性和选择性,为工业界寻找具有潜在应用价值的高效催化剂奠定基础.同时,利用镍配合物催化剂容易导致所得聚烯烃树脂产生支链的特点,有望制备具有优异性能的支化聚烯烃树脂.本文综述了近年来镍配合物在乙烯低聚或聚合催化剂研究方面的进展,并特别强调了催化剂结构和催化性能之间的内在规律.

The research on nickel complexes has provided the great potentials of new catalysts for ethylene reactivity （oligomerization and/or polymerization）. In addition to studying the mechanism of catalytic ethylene reactivity, nickel complex catalysts provide the fundamental bases of model catalysts, which present certain catalytic performance including catalytic activity, selectivity for oligomer or polymer, polymer properties and so on. The well modified model catalysts and newly designed ones would pave the way for potential industrial processes. Moreover, nickel catalysts are found to be relatively easier to conduct β-hydrogen elimination and therefore they would make chances of getting novel branched polyethylenes with some advantage properties for further application. Fundamental research makes the future of industrial catalysts. The progress of nickel complexes as catalysts for ethylene reactivity are reviewed, and the intrinsic relationship between catalyst structure and corresponding catalytic performance is highlighted in this paper.