Selective C−O Bond Cleavage of Bio‐Based Organic Acids over Palladium Promoted MoOx/TiO2. Issue 5 (28th December 2020)

• Record Type: Journal Article
• Authors: Nacy, Ayad; de Lima e Freitas, Lucas Freitas; Albarracín‐Suazo, Sandra; Ruiz‐Valentín, Génesis; Roberts, Charles A.; Nikolla, Eranda; Pagán‐Torres, Yomaira J.
• Is Part Of: ChemCatChem. Volume 13:Issue 5(2021)
• Page Start: 1294
• Page End: 1298
• Publication Date: 2020-12-28
• Subjects: succinic acid -- sustainable chemistry -- hydrodeoxygenation -- heterogeneous catalysis -- C−O bond cleavage; Catalysis -- Periodicals; 541.39505
• DOI: 10.1002/cctc.202001799
• Languages: English
• ISSNs: 1867-3880

Abstract

Abstract: 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 Mo 5+ 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. Abstract : Selective, active and stable heterogenous MoOx −Pd/TiO2 catalyst for hydrodeoxygenation of biomass‐derived feedstocks. High yields of 92 % succinic acid production from tartaric acid are reported over multiple catalytic cycles. This results from in‐situ reduction of supported MoOx centers promoted by Pd on TiO2 .