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烷基铝在α-二亚胺镍催化体系中的应用 被引量:1

Application of Alkylaluminum in(α-Diimine) Nickel Catalysts
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摘要 综述了烷基铝对α-二亚胺镍催化体系在聚合反应中所产生的影响。甲基铝氧烷(MAO)以其较高的活化能力广泛运用于α-二亚胺镍等催化体系中。三甲基铝(TMA)、三异丁基铝(TiBA)等无氯烷基铝也都有一定的活化能力,但远不如MAO。二乙基氯化铝(DEAC)、倍半乙基氯化铝(EASC)等含氯烷基铝有较强的活化能力,甚至比MAO的活化作用强得多,其中EASC和α-二亚胺镍配合可以使乙烯的聚合速率高达3966 kg PE/(mol Ni.h)。 This paper reviewed the influence of alkylaluminum on(α-diimine) nickel catalysts during polymerization reactions.Methylaluminoxane(MAO) is widely used in(α-diimine) nickel catalysts due to its highly activation ability.Chlorine-free alkylaluminum cocatalysts like trimethylaluminum(TMA),triisobutylaluminum(TiBA) and so on can also activate(α-diimine) nickel to a certain extent,but far from MAO.Chlorinated-alkylaluminum cocatalysts like diethylaluminum chlorine(DEAC),ethylaluminum sesquichloride(EASC) and so on are highly effective activators,even much more effective than MAO.The productivities of ethylene polymerization is as high as 3966 kgPE/(mol Ni·h) when catalyzed by the system of EASC combined with(α-diimine) nickel.
出处 《高分子材料科学与工程》 EI CAS CSCD 北大核心 2012年第2期165-168,173,共5页 Polymer Materials Science & Engineering
基金 国家重点基础研究发展计划(973计划,2011CB606001) 浙江大学青年教师交叉研究种子基金
关键词 烷基铝 催化剂 后过渡金属 活化 alkylaluminum catalysts late transition metal activate
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