Sequence structure of polyether catalyzed by Fe–Zn double-metal cyanide complex catalysts
Sequence structure of polyether catalyzed by Fe–Zn double-metal cyanide complex catalysts
复制标题
Fe-Zn双金属氰化物配合物催化剂催化聚醚的序列结构
DOI：
10.1007/s00396-002-0792-y
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发表时间：
2003
期刊：
影响因子：
--
通讯作者：
Li Chen
中科院分区：
文献类型：
--
作者：
Su Chen;Li Chen
通过氯化锌和六氰基铁酸钾的水溶液与络合剂反应形成DMC沉淀，制备并开发了一种新型双金属氰化物（DMC）络合催化剂。为了获得良好的催化剂活性，使用了有机络合剂，例如叔丁醇和多元醇。络合剂被纳入催化剂结构中，并且是活性催化剂所必需的。采用DMC催化剂合成了两种聚醚多元醇。采用高分辨率 13C NMR 和 1H NMR 谱来鉴定聚醚多元醇的序列和立体不规则结构。结果表明，DMC催化剂制备的聚醚多元醇的微观结构以头尾加成和随机立体不规则结构为主。
A new kind of novel double-metal cyanide (DMC) complex catalyst was made and developed by reaction of an aqueous solution of zinc chloride and potassium hexacyanoferrate with complexing agents to form a precipitate of the DMC. For obtaining favorable catalyst activity, organic complexing agents such ast-butanol and polyols were employed. The complexing agent was incorporated into the catalyst structure, and was required for an active catalyst. Two kinds of polyether polyols were synthesized by the DMC catalysts. High-resolution13C NMR and1H NMR spectra were employed to identify the sequence and stereoirregular structure of the polyether polyols. The results showed that head–tail addition and a random stereoirregular structure were dominant in the microstructure of the polyether polyols which were made by DMC catalysts.