Silicon carbide foam supported ZSM-5 composite catalyst for microwave-assisted pyrolysis of biomass. (November 2018)

• Record Type: Journal Article
• Authors: Zhou, Nan; Liu, Shiyu; Zhang, Yaning; Fan, Liangliang; Cheng, Yanling; Wang, Yunpu; Liu, Yuhuan; Chen, Paul; Ruan, Roger
• Is Part Of: Bioresource technology. Volume 267(2018)
• Page Start: 257
• Page End: 264
• Publication Date: 2018-11
• Subjects: Catalytic fast pyrolysis -- Scale-up -- HZSM-5 -- Silicon carbide foam -- Composite catalyst; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2018.07.007
• Languages: English
• ISSNs: 0960-8524

Abstract

Graphical abstract: Highlights: Ex-situ composite catalyst bed produces better bio-oil than other configurations. ZSM-5 in the composite catalyst bed is less prone to deactivation caused by coking. The composite catalyst can be regenerated and reused for multiple cycles. 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.