【摘要】 对现有教学实验中乙酸乙酯教学实验进行改进,用强酸性苯乙烯系阳离子交换树脂作为催化剂催化合成乙酸乙酯.最佳工艺条件为:树脂催化剂用量5g,硫酸1mL,反应温度80℃~90℃,反应时间15min,乙酸:乙醇(1∶1.5);实验全部用时1~2小时,平均产率接近70%,非常适合用于有机化学教学实验中的乙酸乙酯的合成.更多还原

【Abstract】 Making an improvement on the present preparation of ethyl acetate in the experimental textbook,Esterification was carried out at the catalyst of strong-acid-type cation-exchange-resin of styrene with few sulfuric acid.Optimum conditions is as follows: n(acetic acid) : n(ethanol) =1:1.5,The amount of acid resin catalyst is 5g,concentrated sulfuric acid 1 mL,reaction temperature 80~90℃,reaction time 15 min.The total time of experiment is range from 1 to 2 hours.The average yield of final product can be close to 70%. This method serves the teaching experiment good in the preparation of organic chemistry.更多还原