摘要
研究具有开发前景的防霉剂富马酸单乙酯的合成工艺条件。以马来酸酐为起始原料,AlCl3为异构化催化剂,经酯化反应、异构化反应合成了富马酸单乙酯。富马酸单乙酯合成的适宜工艺条件为:酯化反应温度为60℃,酯化反应时间为2.5h,异构化反应温度为90℃,异构化反应时间2.5h,催化剂用量为2.5g/mol,总收率为91.3%。目标化合物经元素分析、红外光谱和质谱确证。该合成方法可行,适宜于工业化生产。
The synthetic conditions of antimicrobial preservative monoethyl fumarate were studied. Monoethyl fumarate was synthesized with maleic anhydride through the esterification and isomerization. The optimal condition was as follows： esterification temperature 60 ℃, esterification time 2.5 h, isomerization temperature 90 ℃, isomerization time 2.5 h, catalyst dosage 2.5 g/mol. The yield of monoethyl fumarate was 91.3%. Moreover, the structure of monoethyl fumarate was characterized by elementary analysis, infrared spectrum and mass spectrum, and this synthetic method is feasible and suitable for industry .
出处
《食品与机械》
CSCD
北大核心
2008年第5期36-37,41,共3页
Food and Machinery
基金
湖南省教育厅科学研究项目(项目编号:07C812)
关键词
富马酸单乙酯
防霉剂
合成
工艺
Monoethyl fumarate
Antimicrobial preservative
Synthesis
Process
