2-Furancarboxylic acid (FCA), produced by oxidation of furfural, is rarely used as a platform molecule. Metal-oxide-supported Pt-MoO x catalysts were effective for hydrodeoxygenation of FCA to valeric acid (VA) in water solvent. The highest VA yield is 51% over Pt-MoO x /TiO 2 catalyst under 1.5 MPa H 2 at 413 K. Other metal combinations (M-MoO x, M = Rh, Pd, Ru, Ir, Au, none; Pt-M′O x, M′= V, W, Re, none) showed very low VA yield. This catalyst system was applicable to the hydrodeoxygenation of 2,5-furandicarboxylic acid (FDCA), and adipic acid (AA) was obtained with 21% yield at 473 K.
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Asano et al. (2016) studied this question.
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