METHOD FOR PREPARING GLYCIDOL USING GLYCEROL AND GLYCIDOL OBTAINED THEREBY

摘要

A method for preparing glycidol using glycerol includes mixing glycerol with urea in the presence of at least one zinc-based catalyst selected from the group consisting of Zn(NO3)2, ZnCl2, ZnO and Zn(OAc)2 under a pressure of 0.5-10 kPa at a temperature of 100-170° C. to obtain glycerol carbonate; filtering the glycerol carbonate mixed with the zinc-based catalyst through an adsorbent including a polymer resin coordinated with amine groups to separate the zinc-based catalyst and glycerol carbonate from each other; and carrying out reaction of the glycerol carbonate separated from the zinc-based catalyst in the presence of an anion alkali metal salt catalyst that is Na, K, Rb, Cs or a mixture thereof containing at least one anion selected from the group consisting of Cl−, Br−, I−, NO3−, NO2− and acetate under a pressure of 0.13-6.67 kPa at a temperature of 140-250° C. to obtain glycidol.

主权项

1. A method for preparing glycidol, comprising the steps of:
(A) mixing glycerol with urea in the presence of a zinc-based catalyst to obtain glycerol carbonate; (B) filtering the glycerol carbonate mixed with the zinc-based catalyst through an adsorbent including a polymer resin coordinated with amine groups to separate the zinc-based catalyst and glycerol carbonate from each other; and (C) carrying out reaction of the glycerol carbonate separated from the zinc-based catalyst in the presence of an anion alkali metal salt catalyst to obtain glycidol.