The influence of various reaction parameters on the performance of (α-diimine)nickel(II) catalysts in ethylene oligomerization reactions

被引:6
|
作者
Helldörfer, M [1 ]
Alt, HG [1 ]
机构
[1] Univ Bayreuth, Anorgan Chem Lab, D-95440 Bayreuth, Germany
关键词
(alpha-diimine)nickel(II) catalysts; oligomerization; alpha-olefins; oligomerization conditions; Lewis bases; additives;
D O I
10.1002/app.12308
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Modified (alpha-diimine)nickel(II) catalysts are suitable for ethylene oligomerization reactions. Due to the mechanism ("chain running"), the formation of double-bond isomers and branched olefins can be observed. The obtained oligomer mixtures show a Schulz-Flory distribution. Increasing ethylene pressure favors the selectivity of a-olefin formation. The same effect can be observed when Lewis bases like thiophene or furane are added to the oligomer-ization reaction mixture. These results can be related to an interaction of the additives with the catalytic active species during the oligomerization process. (C) 2003 Wiley Periodicals, Inc.
引用
收藏
页码:1356 / 1361
页数:6
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