2011•Journal of Jinggangshan UniversityRequires access

CATALYTIC SYNTHESIS OF CYCLOHEXANONE 1,2-PROPANEDIOL KETAL WITH H_4SiW_(12)O_(40)/SiO_2

Nie Ling

Abstract

A novel catalyst,H4SiW12O40/SiO2 was synthesized by a sol-gel technique,and characterized by FT-IR and XRD.Cyclohexanone 1,2-propanediol ketal was synthesized from cyclohexanone and 1,2-propanediol in the presence of H4SiW12O40/SiO2.The factors influencing the synthesis were discussed and the best conditions were found out.The optimum conditions are:molar ratio of cyclohexanone to 1,2-propanediol is 1:1.5,the quantity of catalyst is equal to 0.8% of feed stocks,and the reaction time is 45 min.H4SiW12O40/SiO2 is an excellent catalyst for synthesizing cyclohexanone 1,2-propanediol ketal and its yield can be up to 85.9%.

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