Selective hydrodeoxygenation of lignin-derived phenols to aromatics catalyzed by Nb2O5-supported iridium

21 April 2022, Version 1
This content is a preprint and has not undergone peer review at the time of posting.


Here we report the first heterogeneous iridium-based catalyst (Ir@Nb2O5) able to combine full conversion in hydrodeoxygenation (HDO) of lignin-derived phenols to hydrocarbons with appreciable selectivity for aromatics. With temperature and pressure optimization, and coking inhibition by selective removal of acid sites, the aromatic yields reach 69% under mild conditions.


Niobium oxide
Catalytic hydrodeoxygenation
biomass conversion
aromatic hydrocarbons

Supplementary materials

Supplementary information
Procedures, detailed catalytic results, Spectroscopic data


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