The aim of this study was to investigate the performance of microwave heating of ultrasonically pre-treated HZSM5-based catalysts doped with various transition metals and mixed with microwave absorbers such as SiC. A preliminary study was realized without controlled atmosphere at different microwave incident power and exposure times, with different ratios of SiC as absorbing precursor for microwave energy. Ultrasonic pretreatment time and temperature ranged from 5 to 30 min and 40 to 80 °C, respectively, for five catalysts (doped with Fe2+, Fe3+, Co, Ni and Mo) mixed with SiC. The best results was obtained with Co HZSM5:SiC catalyst, at ratio 2:1 (%w/w), which achieved temperatures in excess of 275°C, suitable for upgrading of biomass pyrolysis vapors. All samples were characterized by FTIR spectroscopy and SEM microscopy. These catalyst/susceptor mixtures were further used to upgrade bio-oil vapors obtained from pyrolysis of woody biomass.<br/>

Effect of ultrasonic pretreatment on microwave heating performance of zeolite-based catalysts mixed with SiC absorbers used in biomass pyrolysis/upgrading processes

2019 Spring National Meeting

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.