Abstract
Valorization of biomass-derived oxygenates to jet fuel range aromatics harbors tremendous practical value due to growing concerns about the sustainable production of fuels and chemicals. Herein, bioderived C3 oxygenates with different functional groups including aldehydes, ketones, and alcohols were converted to jet fuel range hydrocarbons with high yield (maximum 86.1%) and purity (maximum 98.2%) and remarkably enhanced stability in a single continuous-flow reactor using nonprecious dual-bed catalysts. Instead of the conventional pathway (i.e., olefin generation following oligomerization), our strategy first transforms pronanal, propanol, and acetone into C9–C12 oxygenates via aldol condensation and ring closure reactions on the upstream Cu/SiO2 + TiO2 catalyst and subsequently converts the aldol-derived oxygenates through hydrogenation–dehydration–aromatization reactions on the downstream Ni/HZSM-5 catalyst at a relatively moderate temperature (573 K) and atmospheric pressure. This versatile and atom-economic strategy opens new opportunities for the efficient upgradation of bio-oil-derived oxygenates to renewable jet fuel range aromatics.
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