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

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 tempe...

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Bibliographic Details
Published inChinese science bulletin Vol. 53; no. 22; pp. 3511 - 3515
Main Author MAO GuoLiang NING YingNan HU WenBo LI ShanMing SONG XianFeng NIU Bo JIANG Tao
Format Journal Article
LanguageEnglish
Published 2008
Subjects
MAO
PNP
乙烯化作用
化学分析
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Summary: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 AI/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 AI/Cr molar ratio of 100, the catalytic activity is up to 2.29×10^6 g· mol^-1 （Cr）· h^-1 and the selectivity to 1-octene is 49.65 wt%.
Bibliography:triple-site, diphosphinoamine ligand, ethylene tetramerization, 1-octene
11-1785/N
O64
ISSN:1001-6538
1861-9541