Selective hydrogenolysis of 5-hydroxymethylfurfural to 5-methylfurfural over Au/TiO2
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Date
2023-10-15
Publication Type
Journal Article
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Abstract
5-Methylfurfural (MF) is a critical commodity chemical used as food additive and synthetic intermediate. Opening a sustainable route towards highly selective synthesis of MF from 5-hydroxymethylfurfural (HMF) is of great significance, but has demonstrated extremely challenging. Herein, we report an efficient process for the selective production of MF from HMF over an anatase-supported gold catalyst (Au/a-TiO2). During the hydrogenolysis of HMF, the desired C[dbnd]O bond is maintained and MF can be obtained in a high yield of 83.1 %, exhibiting excellent stability both in batch and flow operation. A combination of experimental and theoretical analyses attribute the superior performance of Au/a-TiO2 to the synergistic effect of limited H access, low adsorption of reactants, and avoiding condensation, driven by the high concentration of oxygen vacancies in the support. This study highlights a novel approach of tailoring the coverage of active species for the selective transformation of renewable compounds into high-value-added chemicals.
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published
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Journal / series
Volume
335
Pages / Article No.
122893
Publisher
Elsevier
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Subject
5-hydroxymethylfurfural; Selective hydrogenolysis; 5-methylfurfural; Gold-based catalyst; Biomass valorization
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03871 - Pérez-Ramírez, Javier / Pérez-Ramírez, Javier