摘要
以氯乙酸和无水乙醇为原料,选用固体超强酸CuSO_4·AlCl_3做催化剂,不使用带水剂,采用微波辐射技术合成氯乙酸乙酯,考察了多种因素对产率的影响.优化的反应条件为:氯乙酸与无水乙醇的摩尔比为1∶1.3,催化剂为1.50 g无水硫酸铜和1.25 g无水氯化铝制成的固体超强酸,微波辐射功率为420 W,微波辐射时间为8min,在此条件下收率可达82.6%.此方法简便、高效、无腐蚀、无废酸污染.
In this paper, ethyl chloroacetate is synthesized by using microwave radiation technology, taking chloroacetic acid and an- hydrous ethyl alcohol as raw materials, choosing solid super acid CuSO4·AlCl3 as catalyst, and canceling water-carrying agent. The effect of various factors on the yield was studied and came to the conclusion of the optimum reaction conditions： the？molar？ratio？of？ chloroaeetic acid and anhydrous ethyl alcohol is 1：1.3, the catalyst is solid super acid which made up of 1.25g anhydrous aluminum chloride and 1.50g anhydrous copper sulfate, microwave power is 420W and irradiation time is 8 minutes, on which condition the yield can reach 82.6%. This method is simple, high efficiency and with no corrosion and no waste acid pollution.
出处
《甘肃高师学报》
2017年第6期10-12,共3页
Journal of Gansu Normal Colleges
