Hydroxyapatite-loaded cobalt nanoparticles catalyze the 5-hydroxymethylfurfural green oxidation to 2,5-furandicarboxylic acid under mild conditions

Abstract

A feasible scheme for the aerobic oxidation of 5-hydroxymethylfurfural (HMF) to FDCA without the addition of any soluble base is proposed. The nano catalysts were prepared by loading the common non-precious metal cobalt with the emerging acid-base mineral hydroxyapatite, and sodium hypochlorite (Sodium hypochlorite) and water were used as the oxidant and solvent, respectively, to produce FDCA with a yield of 73.7 % under alkali-free, ambient temperature and pressure (30 °C, air pressure) conditions for only 1 h. The main reaction parameters, such as the loading amount of Co/HAP, the content of sodium hypochlorite, the reaction temperature, and the reaction time, were systematically investigated. Main reaction parameters. From the preparation of catalyst to the catalytic conversion of HMF, the principle of green chemistry was fully adhered to, and the activity of the catalyst remained stable after the secondary activation, which successfully realized the catalytic conversion of HMF without adding extra alkali and with low energy consumption.