Selective co-oligomerizations between α-olefins and ethylene are of high interest since they allow to extend the α-olefin scope employing inexpensive and abundantly available ethylene. Here we report on an easily accessible zirconium catalyst that permits the co-oligomerization of 1-hexene and ethylene with an activity of 2200 kg/mol h bar and a co-oligomer selectivity of 65 mol%. In more detail, we report synthesis and structure of six novel Zr precatalysts, their ethylene homo-oligomerization behavior and the co-oligomerization of the most promising of the six precatalysts. Criteria were activity and selectivity (α-value). Some of the Zr catalyst systems introduced here show an extremely high activity in ethylene homo-oligomerization up to 96,600 kg/mol h bar.

中文翻译：

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使用易于获得的 Zr 催化剂通过乙烯对 α-烯烃进行伸长和支化


α-烯烃和乙烯之间的选择性共低聚受到高度关注，因为它们允许使用廉价且大量可用的乙烯来扩展α-烯烃范围。在这里，我们报道了一种易于获得的锆催化剂，它允许 1-己烯和乙烯共低聚，其活性为 2200 kg/mol h bar，共低聚物选择性为 65 mol%。更详细地，我们报告了六种新型 Zr 预催化剂的合成和结构，它们的乙烯均聚行为以及六种预催化剂中最有前途的共低聚行为。标准是活性和选择性（α 值）。这里介绍的一些 Zr 催化剂体系在乙烯均聚齐聚中表现出极高的活性，高达 96,600 kg/mol h bar。