甲磺酸酐合成与结晶精制工艺研究  

Study on the Synthesis and Purification of Methanesulfonic Anhydride

作　　者：魏东炜[1] 李复生[1] 殷金柱[1] 马利群[1] 

机构地区：[1]天津大学石油化工技术开发中心,天津300072

出　　处：《化学反应工程与工艺》2003年第1期74-77,共4页Chemical Reaction Engineering and Technology

摘　　要：　在最佳工艺条件下,即当反应温度为80℃,甲烷磺酸与亚硫酰氯摩尔比为1/2.5,反应时间4h,减压蒸出过量亚硫酰氯用时为1h,结晶溶剂采用苯-异丙醚(体积比1∶(0.7～1))时,产品收率可达90%。The synthesis of methanesulfonic anhydride from the corresponding acid with thionyl chloride and the purificaton of the product from recrystallization solvents were studied. The results showed that the yield of product can be up to 90% under optimum conditions: the reaction temperature is 80℃, the molar ratio of methanesulfonic acid to thionyl chloride is 1/2.5, the reaction time is 4 hours, the time of evaporation of excessive thionyl chloride is 1 hour, and the solvent is benzeneisopropyl ether (vol. ration is 1∶0.7~1).

关 键 词：甲磺酸酐 甲烷磺酸 亚硫酰氯 合成 重结晶 

分 类 号：TQ031.2[化学工程]