Selective C-O Bond Cleavage of Bio-Based Organic Acids over Palladium Promoted MoOx/TiO2

摘要

Hydrodeoxygenation chemistries play a key role in the upgrading of biomass-derived feedstocks. Among these, the removal of targeted hydroxyl groups through selective C-O bond cleavage from molecules containing multiple functionalities over heterogeneous catalysts has shown to be a challenge. Herein, we report a highly selective and stable heterogeneous catalyst for hydrodeoxygenation of tartaric acid to succinic acid. The catalyst consists of reduced Mo5+ centers promoted by palladium, which facilitate selective C-O bond cleavage, while leaving intact carboxylic acid end groups. Stable catalytic performance over multiple cycles is demonstrated. This catalytic system opens up opportunities for selective processing of biomass-derived sugar acids with a high degree of chemical functionality.