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Haixu Yin,Hengbo Yin,Aili Wang,Lingqin Shen 한국공업화학회 2018 Journal of Industrial and Engineering Chemistry Vol.57 No.-
Catalytic conversion of biomass glycerol to lactic acid is an alternative to the conventional fermentation process starting from carbohydrate. Graphite-supported metallic Ni0 nanoparticles effectively catalyzed the hydrothermal conversion of glycerol to lactic acid in NaOH aqueous solution. Ni0 nanoparticle and NaOH synergistically catalyzed the glycerol conversion to lactic acid. When the reaction was carried out with the initial glycerol and NaOH concentrations of 1.0 and 1.1 mol L−1 at 230 °C for 3 h over Ni0.3/graphite catalyst, the selectivity of lactic acid was 92.2% at the glycerol conversion of 97.6%. The reaction activation energy, Ea, was 69.2 kJ mol L−1.
Hydrogenation of ethyl acetate to ethanol over Cu/ZnO/MOx (MOx = SiO2, Al2O3, and ZrO2) catalysts
Zhipeng Lu,Hengbo Yin,Aili Wang,Jing Hu,Wuping Xue,Haixu Yin,Shuxin Liu 한국공업화학회 2016 Journal of Industrial and Engineering Chemistry Vol.37 No.-
The Cu/ZnO/SiO2, Cu/ZnO/Al2O3, and Cu/ZnO/ZrO2 catalysts prepared by the co-precipitation methodwere used for the catalytic hydrogenation of ethyl acetate to ethanol. The addition of ZnO in the Cu/ZnO/MOx catalysts improved their catalytic activities for the hydrogenation reaction. Small-sized coppercrystallite and high surface acidity favored the catalytic hydrogenation of ethyl acetate to ethanol. TheCu/ZnO/Al2O3 catalyst gave the ethanol selectivity of ca. 95% at the ethyl acetate conversion of ca. 80%when the reaction temperature was 280 8C. The reaction activation energy over Cu/ZnO/Al2O3 catalystwas 115 kJ mol 1, lower than those over the Cu/ZnO/SiO2 and Cu/ZnO/ZrO2 catalysts.