摘要
Ethylene oligomerization has been investigated by using catalyst systemscomposed of nickel (II) diimine complexes (diimine = N, N′-o-phenylene bis(salicylideneaminato), N,N′-o-phenyl-enebisbenzal, N, N′-ethylenebisbenzal) and ethylaluminoxane (EAO). The main productsin toluene and at 110―200℃ were olefins with low carbon numbers (C_4―C_(10)). Effects of reactiontemperature, Al/Ni molar ratio and reaction period on both the catalytic activity and productdistribution were explored. The activity of 1.84 x 10~5 g of oligomer/(mol_(Ni)·h), with 87.4% ofselectivity to C_4―C_(10) olefins, was attained at 200℃ in the reaction when a catalyst composedof NiCl_2-(PhCH= o-NC_6H_4N= CHPh) and EAO was used.
Ethylene oligomerization has been investigated by using catalyst systemscomposed of nickel (II) diimine complexes (diimine = N, N′-o-phenylene bis(salicylideneaminato), N,N′-o-phenyl-enebisbenzal, N, N′-ethylenebisbenzal) and ethylaluminoxane (EAO). The main productsin toluene and at 110―200℃ were olefins with low carbon numbers (C_4―C_(10)). Effects of reactiontemperature, Al/Ni molar ratio and reaction period on both the catalytic activity and productdistribution were explored. The activity of 1.84 x 10~5 g of oligomer/(mol_(Ni)·h), with 87.4% ofselectivity to C_4―C_(10) olefins, was attained at 200℃ in the reaction when a catalyst composedof NiCl_2-(PhCH= o-NC_6H_4N= CHPh) and EAO was used.
基金
ProjectsupportedbytheNationalNaturalScienceFoundationofChina (No .2 0 1730 0 6 )andPh .D . StartingFundofLiaoningProvince(No.2 0 0 110 2 0 89) .
