镍二亚胺配合物/烷基铝催化乙烯聚合  

Ethylene Polymerization Catalyzed by Nickel Diimine Complex/Alkylaluminum Catalyst System

作　　者：薛行华[1] 杨萱[2] 胡杨剑[1] 张启兴[1] 王海华[1] 

机构地区：[1]中山大学化学与化学工程学院,广东广州510275 [2]暨南大学化学系,广东广州510632

出　　处：《分子催化》2004年第1期65-67,共3页Journal of Molecular Catalysis(China)

基　　金：广东省自然科学基金项目(031598).

摘　　要：直链低碳α-烯烃是生产线性低密度聚乙烯的共聚单体及合成高级润滑油和一些精细化学品的中间体，通过乙烯齐聚反应生成直链α-烯烃是目前工业上重要的生产方法，近几年来使乙烯齐聚成α-烯烃的含二或三齿配体后过渡金属催化剂的催化特性受到人们很大的关注。Ethylene polymerizations catalyzed by nickel diimine complex [(CH\-3)C\-6H\-5-N=CH-CH=N-C\-6H\-5(CH\-3)]NiCl\-2 with alkylaluminum as cocatalyst were studied. Polymerization conditions such as co-catalysts, molar ratios of Al∶Ni and polymerization temperature had a pronounced effect on catalytic activity, and activity as high as 2.0×10~5 g C\-2H\-4/mol Ni·h was achieved when co-catalyst was AlEt\-2Cl, molar ratios of Al∶Ni 60, and polymerization temperature 14 ℃.The products of ethylene polymerization were predominantly C\-4~C\-(18) olefins, and polymerization temperature had an effect on ethylene oligomers.

关 键 词：镍二亚胺配合物 乙烯齐聚 一氯二乙基铝 

分 类 号：O632.12[理学—高分子化学]