Bifunctional Biochar-Supported Catalysts for Efficient Hydrodeoxygenation of Pyrolytic Oil Derived from Oil Palm Shells

This study examines the efficacy of bifunctional biochar-based catalysts in the hydrodeoxygenation (HDO) of pyrolytic bio-oil from oil palm shells. Biochar was produced via pyrolysis and modified with Co-Mo and Ni-Mo to enhance catalytic effectiveness. Characterization revealed that activation increased the biochar's surface area significantly from ۱۰.۵۹۷ m²/g to ۲۱۸.۹۶۴ m²/g, although metal impregnation caused a slight reduction. The HDO process in a fixed-bed reactor showed optimal results at ۳۰۰ °C, with varying liquid product yields for different catalysts. GC-MS analysis indicated a reduction in oxygenated compounds post-HDO, with specific catalysts achieving notable hydrocarbon formation and selectivity towards phenols. The upgraded bio-oil demonstrated enhanced physicochemical properties, making it more suitable as a biofuel. The study emphasizes the potential of biochar-supported bimetallic catalysts in bio-oil upgrading, highlighting the advantages of Co-Mo/A-Biochar and Ni-Mo/A-Biochar. These results illustrate the viability of palm shell waste in sustainable biofuel production, addressing environmental and energy concerns.

کلیدواژه ها:

Bimetallic catalysts ، Activated Biochar ، Hydrodeoxygenation ، Oil Palm Shells ، Pyrolytic Oil