2012•Chemical Research and ApplicationRequires access

Catalytic synthesis of cyclohexanone 1,2-propanediol ketal with H_4SiW_6Mo_6O_(40)/SiO_2

Yang Shui-jin

Abstract

A new environmental friendly catalyst,H4SiW6Mo6O40/SiO2 was prepared by Sol-gel method.Cyclohexanone 1,2-propanediol ketal was synthesized from cyclohexanone and 1,2-propanediol in the presence of H4SiW6Mo6O40/SiO2.The factors influencing the synthesis were discussed and the best conditions were found out.The optimum conditions were:molar ratio of cyclohexanone to 1,2-propanediol was 1∶1.4,the dosage of catalyst was equal to 0.8%of feed stocks,the volume of cyclohexane as the water-carrying agent was 12 mL,and the reaction time was 45min.H4SiW6Mo6O40/SiO2 was an excellent catalyst for synthesizing cyclohexanone 1,2-propanediol ketal and its yield could be up to 84.93%.

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Key concepts: Cyclohexanone, Propanediol, Molar ratio, Catalysis, Cyclohexane, Yield (engineering), Chemistry, Organic chemistry