2007•Unpublished venueRequires access

Synthesis of benzaldehyde 1,2-propanediol acetal catalyzed by SO_4~(2-)/TiO_2-MoO_3-La_2O_3 solid superacid

Fei Gao

Abstract

Benzaldehyde 1,2-propanediol acetal was synthesized from benzaldehyde and 1,2-propanediol in the presence of SO42-/TiO2-MoO3-La2O3.The factors influencing the synthesis were discussed and the best conditions were found out.The optimum conditions are:molar ratio of benzaldehyde to 1,2-propanediol is 1:1.8,the quantity of catalyst is equal to 1.0% feed stock,and the reaction time is 1.0 h.SO42-/TiO2-MoO3-La2O3 is an excellent catalyst for synthesizing benzaldehyde 1,2-propanediol acetal and its yield can reach over 77.2%.

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Key concepts: Benzaldehyde, Acetal, Propanediol, Catalysis, Molar ratio, Yield (engineering), Superacid, Chemistry