硫酸催化合成1,2-丁二醇二醋酸酯的研究

Study on Catalytic Synthesis of 1,2-butanediol Diacetate with Sulfuric Acid

论文讨论了用1,2-丁二醇和醋酸反应合成1,2-丁二醇二醋酸酯的工艺,并讨论了不同带水溶剂(甲苯,环已烷,苯),反应温度和催化剂用量对产品收率的影响,实验发现最佳的合成方法为:用甲苯带水,90%硫酸为催化剂,用量为0.6%(重量百分比),产品收率为75%,1,2-丁二醇二醋酸酯含量为95%,1,2-丁二醇单醋酸酯含量5.0%,酯含量99%以上。

This paper discusses the synthesis of 1,2-butanediol diacetate by the reaction of 1,2-butanediol and acetic acid, and the effect of different solvents (toluene, cyclohexane, benzene), reaction temperature, useage of the catalyst on the product yield are also discussed. The experiments show that the best synthesis method is to use toluene to remove the water, use sulfuric acid as a catalyst and its amount is 0.6 %(weight percentage), the reaction temperature is 100~152 ℃. The yield of the product is 75 %, content of 1,2-butanediol diacetate is 95 %, content of 1,2-butanediol monoacetate is 5.0 %, the ester content is over 99 %.