Abstract
A series of bispyridylamine ligands and chromium complexes designed for ethylene oligomerization have been synthesized, which was made up of both neutral organic ligand and inorganic anion. The compositions of these complexes have been fully characterized by spectroscopic and analytical methods. Catalysts (Cr1–Cr4) were evaluated in detail with methylaluminoxane (MAO) as an activator in the ethylene oligomerization. As a result, Cr1 achieved a higher catalytic activity of 2.93 × 105g/(mol(Cr) h) and a higher selectivity of 55.34% toward the valuable C8 compound using toluene as the solvent. The total selectivity to LAOs was 71.2%.
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The authors would like to thank the National Key R & D Program of China (No. 2017YFB0306701).
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Wang, J., Liu, J., Chen, L. et al. Preparation of chromium catalysts bearing bispyridylamine and its performance in ethylene oligomerization. Transit Met Chem 44, 681–688 (2019). https://doi.org/10.1007/s11243-019-00333-3
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DOI: https://doi.org/10.1007/s11243-019-00333-3