Silicon carbide foam supported ZSM-5 composite catalyst for microwave-assisted pyrolysis of biomass.

Author(s) Zhou, N.; Liu, S.; Zhang, Y.; Fan, L.; Cheng, Y.; Wang, Y.; Liu, Y.; Chen, P.; Ruan, R.
Journal Bioresour Technol
Date Published 2018 Nov

Considering a series of issues facing the application of catalysts in large scale catalytic fast pyrolysis systems, a novel composite catalyst of ZSM-5 coatings on SiC foam supports was developed and tested for ex-situ catalytic upgrading of the pyrolytic vapors. Different configurations of catalysts placement were compared and the results showed the composite catalyst could significantly improve the bio-oil quality without significantly reducing the yield. The effect of catalyst to biomass ratio on the product yields and bio-oil composition was studied and the results showed that increasing catalyst to biomass ratio could improve the quality of bio-oil at the cost of its yield. In addition, the composite catalyst can maintain its activity until a catalyst to biomass ratio of 1/10, outperforming ZSM-5 in other configurations reported in literature. Furthermore, the composite catalysts could be regenerated and reused while well preserving its material properties and catalytic activity after seven reaction-regeneration cycles.

DOI 10.1016/j.biortech.2018.07.007
Keywords Biofuels; Biomass; Carbon Compounds, Inorganic; Catalysis; Microwaves; Silicon Compounds
ISSN 1873-2976
Citation Bioresour Technol. 2018;267:257264.

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