Zr-doped MgAl-LDH@Au nano-catalysts for selective and efficient oxidation of biomass-derived furfural

Lignocellulosic biomass upgrading is a pivotal axis in the transition from an economy based on fossil resources to one reliant on renewable biomass resources. Within this context, low-cost Zr-doped MgAl-LDH@Aunano-catalysts are reported in this study as efficient catalysts to synthesize bio-based succinic acid. A series of Zr-doped MgAl-LDH and Au/Zr-doped MgAl-LDH catalysts have been successfully prepared. All catalysts have a lamellar double hydroxide structure LDH even after enrichment with Zr and addition of Au.Au NPs have small average sizes ranging from 1.2 to 8.5 nm. The materials under study showed exalted catalytic performances in the direct synthesis of succinic acid from bio based furfural via an aqueous phase oxidation reaction with H2O2. 84% of furfural conversion and 99% selectivity towards succinic acid were achieved.A positive synergy between Zr and Au NPs is highlighted and related to this catalytic performances improvement.