硫酸氢钠催化合成草酸二乙酯的研究  

Study on Synthesis of Diethly Oxalate by Catalysis of Sodium Hydrogen Sulfite

作　　者：樊素芳[1] 金秋[1] 王彩霞[1] 

机构地区：[1]河南农业大学理学院,郑州450002

出　　处：《河南科学》2009年第1期34-35,共2页Henan Science

摘　　要：以硫酸氢钠为催化剂,甲苯为带水剂,以结晶草酸和乙醇为原料直接酯化合成草酸二乙酯.通过实验得出了最佳反应条件:醇酸物质的量之比为4,催化剂用量为总投料量的5%,反应时间5h.在此条件下得到了较好的收率.The paper reported a method of diethyl oxalate’s synthesis:Using sodium hydrogen sulfite as a catalyst,methylbenzene as a water bringer,diethyl oxalate is synthesized from oxalic acid and ethanol. We found the optimal conditions by testing. The optimal conditions are as follows:The amount of substance ratio of alcohol to acid 4,mass ratio of catalyst 5 % ,time of reaction 5 h. Under the optimal conditions,the yield of diethyl oxalate is high.

关 键 词：草酸二乙酯 硫酸氢钠 催化合成 催化剂用量 最佳反应条件 物质的量 酯化合成 反应时间 

分 类 号：TQ225.242[化学工程—有机化工] O623.624[理学—有机化学]