相转移催化法合成甘油的实验研究

目的探讨实验室合成甘油的最佳反应条件。方法利用相转移催化法合成甘油，通过反转恢复序列（ＩＲ）和ＨＮＭＲ验证结构，并对影响反应的因素及相催化剂进行研究。结果该法合成甘油的最佳反应条件为：以ＰＥＧ－６００（聚乙二醇）为相催化剂，反应物按１：１．５投料。反应温度控制在９０℃左右，反应时间３．５～４ｈ。结论通过对合成实验的研究，该法反应时间短，产品收率高，具有广泛的应用前景。

Experimental study on synthetizing glycerin under phase-transferconditions

Objective To probe into the best reaction conditions of synthesis of glycerin in experiment laboratory.Methods Glycerin was synthzd with the phase transfer catalyst and its structure was examined with inversion-recovery sequence(IR) adn HNMR.A research was done on the factors and the phase transfer catalyst which interfere with reaction.Results The best reaction conditions of synthesis glycerin were that the PEG - 600 was the phase transfer catalyst and the ratio of reactants were 1:1.5 and the temperature of reaction was controled at about 90℃ and the time of reaction was 3.5h.Conclusion The time of reaction was short and the rating of product was high.So the method has a good prospect of being widely applied