Journal
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
Volume 60, Issue 37, Pages 13485-13491Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.iecr.1c01911
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Funding
- Natural Science Foundation of China [21808163, 21690083]
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A solvent-free method was proposed to upgrade biomass-derived compound 5-hydroxymethylfurfural (HMF) to 2,5-furandicarboxylic acid (FDCA) with high selectivity. The oxidation of HMF to FDCA without solvent and base addition, with O-2 replenishing the consumption of active oxygen species on the catalyst surface, demonstrated a successful reaction mechanism.
A solvent-free method was proposed to upgrade the biomass-derived compound 5-hydroxymethylfurfural (HMF). The oxidation of HMF to produce 2,5-furandicarboxylic acid (FDCA) has been examined in the presence of O-2 without the addition of solvent and base. Different from the conversion of the aldehyde group on HMF as the initial oxidation step in H2O solvent, the hydroxyl group on HMF was first oxidized and FDCA was finally generated without the addition of solvent. The role of O-2 is to replenish the consumption of active oxygen species on the catalyst surface. The oxidation of HMF to FDCA proceeded due to the solvent-free effect. A 83.6% FDCA selectivity at 38.8% HMF conversion was measured with a PdO/AlPO4-5 catalyst at 80 degrees C for 5 h and the reaction mechanism was proposed.
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