Highly Selective Diphoshinoamine/Cr(III) Catalysts for Ethylene Tetramerization

摘要

Two novel diphoshinoamine ligands have been synthesized. Combination of Cr(III) and methylaluminoxane(MAO) generated active catalytic system which can catalyze tetrame- rization of ethylene with high catalytic activity up to 2.5×106 g/mol Cr.h and high selectivity to produce 1-octene (C8 in products is being 89.80 wt%).