摘要
采用自制的催化剂 ,运用条件实验法 ,以苯酚、乙酐为原料 ,直接酯化合成乙酸苯酯 ,分别研究了反应温度、反应时间、原料配比、催化剂用量、精馏温度等条件对合成反应的影响 ,确定了最佳工艺条件。该方法合成乙酸苯酯的最佳工艺条件是反应温度 135～ 14 5℃ ,反应时间 90min ,苯酚与乙酐物质的量比为 1.0 0 :1.0 5 ,催化剂用量为占体系总量的 0 .0 3% ,精馏温度 194～ 196℃ ,在此条件下 ,乙酸苯酯的收率达到 98.7% .
By means of self_made catalyst and conditional test, the phenyl acetate was synthesized from phenyl hydroxide and acetic anhydride by direct esterification. The factors influencing on the synthesis were studied, and the proper technological conditions were given as follows. The reaction temperature is 135～145 ℃, the reaction time is 90 min, the molar ratio of phenyl hydroxide and acetic anhydride is 1.00:1.05, the content of catalyst is 0.03% by weight of the total system mass,and the esterifying temperature is 194～196 ℃. The yield of the product is 98.7%.
出处
《应用科技》
CAS
2002年第6期54-55,共2页
Applied Science and Technology
关键词
乙酸苯酯
苯酚
乙酐
合成
phenyl acetate
phenyl hydroxide
acetic anhydride
synthesis
