Catalytic Synthesis of Cyclohexanone 1,2-Propanediol Ketal with SO_4~(2-)/TiO_2-WO_3

Cyclohexanone 1,2-propanediol ketal is synthesized from cyclohexanone and 1,2-propanediol by using SO42-/TiO2-WO3 as catalyst. The results indicate that the catalyst possesses a fairly high catalytic activity for the katalation reaction. The effects of the catalyst content, reaction temperature and reaction time on the yield of the cyclohexanone 1,2-propanediol ketal have been investigated. The optimum conditions are: molar ratio of cyclohexanone to 1,2-propanediol is 1:1.5, the quantity of catalyst is equal to 1.25% of feed stocks, and the reaction time is 1.5 h. SO42-/TiO2-WO3 is an excellent catalyst for synthesizing cyclohexanone 1,2-propanediol ketal and its yield can reach over 88.5%.