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Nickel catalysts with phosphorane ligands for the oligomerization of ethylene

Chungu Xia,Yanwen Sun,TieYuan Liu,Huanling Song,Cailan Yao,Dagang Li

Petrochemical Technology（1997）

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Abstract
Oligomerization of ethylene with water soluble nickel-phosphine catalysts I (NiCl 2/ Ph 2PCH 2COOH/NaBH 4)and II (NiCl 2/Ph zPPhCOOH/NaBH 4) was studied. Experimantal results indicated that these catalysts gave higher reaction rate (gC n ?/gNi �� h) and selectivity of n-alpha olefins(>96%). The results also indicated that the separation of products was very easy and the carbon numbers of olefins could be controled by ligands and mole ratio of Ni/P.
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Key words
n-alpha olefins,Nickel-phosphine catalyst,Oligomerization of ethylene
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