有关双烯烃在稀土催化剂作用下的聚合已发表了不少工作,但用这类催化剂聚合乙烯的研究,只有少数专利报道,且催化活性小,并需在较高的压力下聚合。本文介绍一个新的常温常压下聚合乙烯的催化体系LnCl_3-C_2H_5OH-(C_2H5),Al(Ln代表从La至Lu的稀土离子),并研究了影响催化活性的因素。 Much work has been published on the polymerization of diolefins under the action of a rare earth catalyst. However, the research on the polymerization of ethylene using such catalysts has been reported in only a few patents, and its catalytic activity is small and needs to be polymerized under higher pressure. In this paper, we introduce a new LnCl 3 -C 2 H 5 OH- (C 2 H 5) catalyst system for polymerization of ethylene at room temperature and pressure, and Al (Ln represents rare earth ions from La to Lu). The factors affecting the catalytic activity were also investigated.