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研究以壳聚糖（Ｃｓ）作为高分子金属催化剂载体，制得负载稀土金属化合物的高分子金属催化剂，应用于环氧乙烷（ＢＯ）和环氧丙烷（ＰＯ）的共聚合反应。研究发现以三异丁基铝（Ａｌ（ｉ－Ｂｕ）３）为助催化剂，乙酰丙酮（Ａｃａｃ）为第三组分时，该体系的催化活性高达１９２ｋｇｃｏｐｏｌｙｍｅｒ／ｍｏｌＹ，比非负载型稀土催化体系活性提高１个数量级以上。环氧乙烷和环氧丙烷的竞聚率ｒ１（ＥＯ）、ｒ２（ＰＯ）分别为２．７５±０．０２和０．５５±０．０１；并用１３Ｃ－ＮＭＲ谱和ＤＳＣ谱对共聚物结构进行了表征。
In this paper, chitosan (Cs) was used as a carrier of high molecular metal catalysts to prepare a polymer metal catalyst supported on rare earth metal compounds and used in the copolymerization of ethylene oxide (BO) and propylene oxide (PO). The results showed that when Al (i-Bu) 3 was used as cocatalyst and acetylacetone (Acac) as the third component, the catalytic activity of this system was as high as 192 kg copolymer / molY, which was higher than that of unsupported rare earth catalyst system Activity increased by more than 1 order of magnitude. The reactivity ratios r1 (EO) and r2 (PO) of ethylene oxide and propylene oxide were 2.75 ± 0.02 and 0.55 ± 0.01, respectively. The copolymers were characterized by 13C-NMR and DSC. The structure was characterized.