Elongation and Branching of Α-Olefins by Ethylene Employing an Easily Accessible Zr Catalyst
Journal of catalysis(2024)
Abstract
Selective co-oligomerizations between α-olefins and ethylene are of high interest since they allow to extent 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%. 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 96600 kg/mol h bar.
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Key words
Aminopyridinato ligands,Branched α-olefins,Ethylene oligomerization,Homogeneous catalysis,Zirconium
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