Synthesis of butyraldehyde 1,2-Propanediol Acetal using H3 PW12 O40/SiO2 as Catalyst

Butyraldehyde 1,2-propanediol acetal was synthesized from butyraldehyde and 1,2-propanediol in the presence of H3 PW12 O40/SiO2 .The factors influencing the synthesis were discussed and the best conditions were found out.The optimum conditions are:molar ratio of butyraldehyde to 1,2-propanediol is 1∶1.4, the quantiy of catalyst is equal to 1.0%of feed stocks, the volume of cyclohexane as the water -carrying agent is 6 mL, and the reaction time is 60 min.H3 PW12 O40/SiO2 is an excellent catalyst for synthesizing butyraldehyde 1,2-propanediol acetal and its yield can be up to 87 .9%.