Improving the Conversion of Biomass in Catalytic Pyrolysis via Intensification of Biomass—Catalyst Contact by Co-Pressing

Biomass pyrolysis is a promising technology for fuel and chemical production from an abundant renewable source. It takes place usually in two stages; non-catalytic with further catalytic upgrading of the formed oil. The direct biomass reduces temperature, increase yield to target products improves their quality. However, such one-stage process contact between solid catalyst particles poor leading excessively high degree pure thermal reactions. aim this study was enhance catalyst-biomass via co-pressing as pre-treatment method. Catalytic components HY USY zeolites studied using thermogravimetric analysis (TGA), well experiments reactor. liquid coke yields were characterized gas chromatography, TGA respectively. results showed that degradation co-pressed cellulose occurred at lower temperatures compared degradation, non-pretreated cellulose. All produced better method, where increased while coke/char decreased. Bio-oil mainly heavier fractions, presence medium fraction within gasoline range. For hemicellulose pyrolysis, catalysts had similar effects enhancing lighter fraction, but specifically, higher selectivity middle has percentage fraction. Using both catalysts, best effect eliminating improving range Spent sample concentrations due shorter residence times volatiles, which suppresses occurrence secondary reactions formations.