Catalytic synthesis of sulfonated silica gel cyclohexanone 1,2-propanediol ketal

Silicasulfuric acid(SSA) was used as the catalyst for synthesis of Cyclohexanone 1,2-propylene ketal from cyclohexanone and 1,2-propylene glycol.The effect of catalyst dosage,molar ratio and reflux time to reaction were investigated.The yield of Cyclohexanone 1,2-propylene ketal reaches 93.0% under the optimal reaction condition as follows:Cyclohexanone 0.05 mol,Cyclohexanone to 1,2-propylene glycol molar ratio is 1:1.3,catalyst dosage is 6%(0.3g) of the mass of Cyclohexanone,reaction time is 2 h.The catalyst preparation is simple and high catalytic activity,post-processing is simple,in line with the development trend of green catalysts.