微波辅助分子筛合成DL-苹果酸二乙酯研究  

Synthesis of DL Diethyl Malate by Microwave Assisted Molecular Sieve

作　　者：杨智源 白缘缘 赵娜[1] Yang Zhiyuan;Bai Yuanyuan;Zhao Na(Guangdong Industry Polytechnic,Guangzhou 510300,China)

机构地区：[1]广东轻工职业技术学院,广东广州510300

出　　处：《广东化工》2022年第5期29-31,28,共4页Guangdong Chemical Industry

基　　金：2019年度广东省普通高校特色创新类项目——绿色驱蚊剂苹果酸酯的环境友好型合成及其应用(NO.2019GKTSCX010);广东轻工职业技术学院2019人才类项目:大学生创新创业能力形成机制及培养策略研究(152241910)。

摘　　要：传统的苹果酸酯的合成污染大,能耗高,本项目采用微波-分子筛合成苹果酸酯的方法,以苹果酸和无水乙醇为原料,以分子筛为催化剂,在微波辐射条件下合成苹果酸二乙酯,对影响合成苹果酸二乙酯的因素进行研究。结果表明:当酸醇物质的量比为1︰5,改性HZSM-5型分子筛用量是苹果酸质量比为3%、微波辐射功率400 W,微波辐射作用时间20 min,微波辐射温度为120℃时,苹果酸二乙酯的酯化率最高可达32.56%。The traditional synthesis of malate has great pollution and high energy consumption. In this project, the method of microwave molecular sieve synthesis of malate is adopted, with malic acid and absolute ethanol as raw materials and molecular sieve as catalyst to synthesize diethyl malate under microwave radiation. The factors affecting the synthesis of diethyl malate are studied. The results showed that when the mass ratio of acid to alcohol was 1︰5, the mass ratio of malic acid was 3 %, the microwave radiation power was 400 W, the microwave radiation time was 20 min, the microwave radiation temperature was 120 ℃, and the esterification rate of diethyl malate was up to 32.56 %.

关 键 词：微波辐射技术 催化合成 分子筛 DL-苹果酸二乙酯 酯化率 绿色环保 

分 类 号：TQ[化学工程]