亚硫酸乙烯酯的制备工艺研究  

Study on the Preparation Process of Ethylene sulfite

作　　者：杨明霞 YANG Mingxia(Do-Fluoride New Materials Co.,Ltd.,Jiaozuo 454191,China)

机构地区：[1]多氟多新材料股份有限公司,河南焦作454191

出　　处：《河南化工》2022年第12期35-37,共3页Henan Chemical Industry

摘　　要：以乙二醇和氯化亚砜为原料,乙腈作溶剂,考察了反应温度、原料比例、溶剂用量对亚硫酸乙烯酯(ES)收率的影响及催化剂对反应时间的影响,并对比不同除酸剂的除酸效果。实验结果表明:10℃条件下,n(C_(2)H_(6)O_(2))∶n(SOCl_(2))=1∶1.1,m(CH_(3)CN)∶m(SOCl_(2))=2∶1,ES收率最佳为90.5%。ES粗品经碳酸锂(Li_(2)CO_(3))除酸,实验室精馏处理,产品指标合格。Using ethylene glycol and thionyl chloride as raw materials and acetonitrile as solvent,ethylene sulfite(ES)is prepared.The effects of reaction temperature,ratios of reactants,solvent amount on the yield of ES and the influence of catalyst on the reaction time are investigated,and the acid removal effects of different acid removers are compared.The results show that the temperature is 10℃,the condition of n(C_(2)H_(6)O_(2))∶n(SOCl_(2))is 1∶1.1,m(CH_(3)CN)∶m(SOCl_(2))is 2∶1,the ES yield can reach 90.5%.The crude ES is treated by acid removal of lithium carbonate(Li_(2)CO_(3))and laboratory distillation,the product index is qualified.

关 键 词：亚硫酸乙烯酯 乙二醇 氯化亚砜 乙腈 碳酸锂 

分 类 号：O623.8[理学—有机化学]