Abstract
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.
Original language | English (US) |
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Pages (from-to) | 257-264 |
Number of pages | 8 |
Journal | Bioresource Technology |
Volume | 267 |
DOIs | |
State | Published - Nov 2018 |
Keywords
- Catalytic fast pyrolysis
- Composite catalyst
- HZSM-5
- Scale-up
- Silicon carbide foam