2012•Guangzhou ChemistryRequires access

Catalytic Hydrogenation of Methyl Difluoroacetate to 2,2-Difluoroethanol by Ru/ZrO_2·xH_2O Catalyst

Yuanfa Yang

Abstract

Ru/ZrO2·xH2O was prepared by co-precipitation method and 2,2-difluoroethanol was obtained by catalytic hydrogenation of methyl difluoroacetate over the catalyst Ru/ZrO2·xH2O in liquid phase.The fresh catalyst and catalyst after reaction were characterized by XRD.Effects of solvent,stirring rate,reaction time,pressure and temperature were investigated.The results showed that: when solvent was water,stirring rate was 1 000 r/min,reaction time was 5 h,reaction pressure was 2.8 MPa,reaction tempreture was 140℃,the conversion of methyl difluoroacetate was 100%,yield of 2,2-difluoroethanol were 51%.

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Key concepts: Catalysis, Chemistry, Yield (engineering), Solvent, Nuclear chemistry, Precipitation, Reaction rate, Inorganic chemistry