Synthesis of cyclohexyl acetate heterogeneous catalyzed by bismuth phosphotungstate

Acylation of cyclohexanol with acetic anhydride catalyzed by bismuth phosphotungstate.The effect of different factors such as the amount of catalyst,the ratio of cyclohexanol to acetic anhydride and reaction time on the yield of cyclohexyl acetate were carefully studied.The results showed that bismuth phosphotungstate has a good catalytic activity.The best of reaction condition are as follows:when the amount of acetic anhydride was 0.1 mol,the ratio of cyclohexanol to acetic anhydride was 1.2,the catalyst was 0.9 g.Through reacting 30 min,the yield of cyclohexyl acetate reached 93.8%.The catalyst can be repeatedly used for 5 times without obvious loss of its activity.The product was characterized by refractive index and IR.