Catalytic Hydrodeoxygenation of High Carbon Furylmethanes to Renewable Jet-fuel Ranged Alkanes over a Rhenium Modified Iridium Catalyst
Date
2017-07-07
Journal Title
Journal ISSN
Volume Title
Publisher
Wiley-Blackwell
Abstract
Renewable jet-fuel ranged alkanes are synthesized by hydrodeoxygenation of lignocellulose derived
high carbon furylmethanes over ReOx modified Ir/SiO2 catalysts under mild reaction conditions.
Ir-ReOx/SiO2 with a Re/Ir molar ratio of 2 exhibits the best performance, achieving a combined
alkanes yield of 82-99% from C12-C15 furylmethanes. Catalyst can be regenerated in three
consecutive cycles with only ~12% loss in the combined alkanes yield. Mechanistically, the furan
moieties of furylmethanes undergo simultaneous ring saturation and ring opening to form a mixture
of complex oxygenates consisting of saturated furan rings, mono-keto groups, and mono-hydroxy
groups. Then, these oxygenates undergo a cascade of hydrogenolysis reactions to alkanes. The high
yield of Ir-ReOx/SiO2 arises from a synergy between Ir and ReOx. The acidic sites of partially
reduced ReOx activate the C-O bonds of the saturated furans and alcoholic groups, while the Ir sites
are responsible for hydrogenation with H2.
Description
Author's final draft after peer review
Keywords
Citation
Liu, Sibao, et al. "Catalytic Hydrodeoxygenation of High Carbon Furylmethanes to Renewable Jet‐fuel Ranged Alkanes over a Rhenium‐Modified Iridium Catalyst." ChemSusChem 10.16 (2017): 3225-3234.