第 36 卷第 3 期 Vol. 36 No. 3 2006 年 6 月 Jun 2006

所属栏目：有机合成原料 粉煤灰复合固体酸催化合成乳酸正丁酯的研究

古绪鹏; 冷玲波(安徽工业大学化学与化工学院; 安徽马鞍山)

摘　要：以乳酸和丁醇为原料,在粉煤灰复合固体酸的催化下,对合成乳酸正丁酯的工艺进行了实验研究,其优惠制备条件为:浸泡硫酸浓度为0.5mol/L,浸泡时间为6h,焙烧温度为550℃,焙烧时间为3h,优化酯化反应条件为:醇酸摩尔比为3∶1,催化剂的用量为乳酸质量的3.0%,反应时间为2h,酯化率可达98.8%。

关键词：乳酸正丁酯; 催化剂; 固体酸; 粉煤灰

中图分类号：TQ225.24　　文献标识码：A　　文章编号：1009-9212(2006)03-0059-03

Synthesis of Butyl Lactate with Fly Ash Composite Solid Acid as Catalyst

GU Xu-peng; LENG Ling-bo（School of Chemistry and Chemical Engineering; Anhui University of Technology; Ma'anshan 243002; China）

Abstract：Butyl lactate was synthesized starting from lactic acid and butanol over a composite solid acid as catalyst.Experimental results indicated that the optimal preparation conditions were obtained as 0.5 mol/L H2SO4,immersing time 6 h and calcination temperature 550℃.Under the optimal conditions such as butyl alcohol-lactic acid molar ratio 3 ∶ 1,percentage amount of catalyst 3.0% and reaction time 2 h,the esterification rate reached 98.8%.

Key words：n-butyl lactate; catalyst; solid acid; fly ash

基金项目：安徽省教育厅自然基金项目(2006kj106B)

收稿日期：2005-12-02

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