DISSOLUTION OF SOLVENT-EXTRACTED RICE STRAW IN KEROSENE BY CATALYTIC HYDROCRACKING
Keywords:
Rice straw, kerosene, catalytic hydrocracking, Y zeolite, noble metal.Abstract
In order to increase the solubility of solvent-extracted component from rice straw (RS Soluble) in kerosene, the RS Soluble was hydrocracked in an autoclave at 200 and 350°C in a cyclohexane solvent using 5 wt% platinum- , palladium- or rhodium-loaded Y zeolite catalysts (5PtY, 5PdY or 5RhY). A NH3-TPD (temperatureprogrammed desorption) revealed that 5PtY had almost the same acid property (acidity and the amount of acid sites) as the HY zeolite. The kerosene-soluble yield for the untreated RS Soluble was only about 20 wt%. The yield of kerosene-soluble components produced by the hydrocracking of RS Soluble at 200°C increased to 34-45 wt% with or without catalyst. The maximum yield of kerosene-soluble components produced by the hydrocracking of RS Soluble at 350°C was 61 wt%, which was achieved using 5PtY.
