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Synthesis of a novel triple-site diphosphinoamine (PNP) ligand and its applications in ethylene tetramerization

机译:新型三位二膦胺配体的合成及其在乙烯四聚反应中的应用

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摘要

A novel triple-site diphosphinoamine (PNP) ligand was synthesized and characterized. In combination with Cr(III) and methylaluminoxane (MAO), it generated active catalytic systems for ethylene tetramerization toward 1-octene with high catalytic activity and long lifetime. The effects of reaction temperature, molar ratio of Al/Cr and molar ratio of ligand/Cr on catalytic activity and selectivity to 1-octene were studied with reaction kinetics of the catalytic system for ethylene tetramerization described. At the Al/Cr molar ratio of 100, the catalytic activity is up to 2.29x10(6) g center dot mol(-1) (Cr)center dot h(-1) and the selectivity to 1-octene is 49.65 wt%.
机译:合成和表征了新型的三位点二膦胺(PNP)配体。与Cr(III)和甲基铝氧烷(MAO)结合使用,可生成具有高催化活性和长寿命的乙烯四聚为1-辛烯的活性催化体系。通过描述的乙烯四聚反应体系的反应动力学,研究了反应温度,Al / Cr摩尔比和配体/ Cr摩尔比对催化活性和对1-辛烯选择性的影响。在Al / Cr摩尔比为100时,催化活性高达2.29x10(6)g中心点mol(-1)(Cr)中心点h(-1),对1-辛烯的选择性为49.65 wt% 。

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