| 초록 |
The development of highly active and durable catalysts for the hydrodeoxygenation (HDO) of biomass pyrolysis oils, called bio-oil, is crucial for the cost-effective production of renewable fuels and chemicals. In order to achieve the effective cleavage of the various C-O and C=O bonds in bio-oils, the HDO catalyst needs additional active sites in conjunction with hydrogenation metals such as acid sites, sulfur vacancy, and oxygen vacancy. Herein, we report on the role of rhenium oxide promoter in the enhanced HDO activity of the noble metal catalysts (e.g., Ru/C). The nature of active sites based on the rhenium redox cycle is proposed, and reaction kinetics of the catalysts from bio-oil model compounds (e.g., phenols) to real bio-oils in a continuous flow reactor is discussed. In addition, carbon-increasing catalytic strategies for upgrading the bio-oil into jet fuels such as alkylation of phenols, which can be implemented before HDO, are discussed. |
