Catalytic Synthesis of Cyclohexanone Ethylene Ketal with Solid Superacid SO_4~(2-)/TiO_2-Ce(IV)

The catalyst solid superacid SO_4~(2-)/TiO_2-Ce(IV) was prepared.Cyclohexanone ethylene ketal was synthesized from cyclohexanone and ethylene glycol in the presence of solid superacid SO_4~(2-)/TiO_2 -Ce(IV).The factors influencing the synthesis were discussed and the best conditions were found out . The optimum conditions are:molar ratio of cyclohexanone to ethylene glycol is 1∶1.5, the quantity of catalyst is equal to 0.5% feed stock,and the reaction time was 1.0h.Solid superacid SO_4~(2-)/TiO_2-Ce(IV) is a good catalyst for synthesizing cyclohexanone ethylene ketal and its yield can reach over 85.7 %.