氯铝酸离子液体催化合成二苯甲酮

Synthesis of Benzophenone in Chloroaluminate Ionic Liquids

本文以路易斯酸性离子液体[Emim]Br-AlCl3为催化剂,以苯和苯甲酰氯为原料催化合成二苯甲酮。考察了离子液体的催化活性,较系统地研究了催化剂路易斯酸性、反应时间、反应温度和反应物摩尔比等条件对收率的影响。在n(AlCl3)/n([Emim]Br-AlCl3)=0.80,n(苯)∶n(苯甲酰氯)=3∶1、反应温度80℃、反应时间80min工艺条件下,二苯甲酮的收率达76.4%。

Taken Lewis acid ionic liquid [Emim] Br- AlCl3 as a catalyst, benzene and benzoyl chloride as raw materials to catalytically synthesized Benzophenone. We studied the catalytic activity of ionic liquid, and made more systematic study of the impact of conditions on the yield of Lewis acid catalyst, reaction time, reaction temperautre and reactant molar ratio etc. Under the conditions of n（AlCl3）/ n （[Emim]Br- AlCl3） =0.80, n （benzene）： n （benzoyl chloride） = 3：1, reaction temperature is 80℃, reaction time is 80min, the yield ratio of Benzophenone reached 76.4%.