Products Distribution of Glycerol Hydrogenolysis over Supported Co Catalysts in a Liquid Phase

摘要

The products distribution of glycerol hydrogenolysis over supported Co catalysts was evaluated in a liquid phase system. The effects of support type, temperature, pressure and reaction time on the conversion of glycerol as well as yield of desired products were investigated. The preliminary results indicated that various added compounds were generated in the presence of supported Co catalysts. The type of support and the reaction temperature, pressure and time significantly affected either the glycerol conversion or the product yield. The acidity of catalyst played a more important role in the glycerol hydrogenolysis over supported Co catalysts than the specific surface and pore volume. Among the utilized supported Co catalysts, Co/γ-Al_2O_3 exhibited the highest acrolein yield of about 31.1% at 70.5% conversion at 200°C, 8 MPa H_2 pressure and 6 h reaction time.