Copolymerization of carbon dioxide with propylene oxide catalyzed by poly(p-hydroxystyrene)/diethylzinc system
Copolymerization of carbon dioxide with propylene oxide catalyzed by poly(p-hydroxystyrene)/diethylzinc system
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DOI：
10.1002/macp.1978.021790805
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发表时间：
1978-08
影响因子：
2.5
通讯作者：
M. Nishimura;M. Kasai;E. Tsuchida
中科院分区：
文献类型：
--
作者：
M. Nishimura;M. Kasai;E. Tsuchida
由聚[1-（4-羟基苯基）乙烯]（1）和Zn（C_2H_5）_2制备的高分子催化剂对二氧化碳和1，2-环氧丙烷的共聚是有效的。最高的活性时，观察到的摩尔比的酚氢在1 Zn（C2 H5）2等于一个应用在迄今为止报道的催化剂相反。通过IR和H1 NMR谱确定了共聚后催化剂的结构。该体系中的Zn-C_2 H_5键被证实是活性中心。提出了一种可能的催化剂失活过程。
A polymeric catalyst prepared from poly[1-(4-hydroxyphenyl)etylene] (1), and Zn(C2H5)2 was found to be effective for the copolymerization of carbon dioxide and 1,2-epoxypropane. The highest activity was observed when a mole ratio of phenolic hydrogen in 1 to Zn(C2H5)2 equal to unity was applied in contrast to the catalysts so far reported. The structure of the catalyst after the copolymerization was determined by IR and H1 NMR spectroscopy. A Zn—C2H5 bond in this system was confirmed to be the active center. A possible inactivation process of the catalyst is proposed.