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Enhanced Formation of 5-Hydroxymethylfurfural from Glucose Using a Silica-Supported Phosphate and Iron Phosphate Heterogeneous Catalyst

Huang, Fangmin, Su, Yuwen, Long, Zhouyang, Chen, Guojian, Yao, Yue
Industrial & engineering chemistry process design and development 2018 v.57 no.31 pp. 10198-10205
Fourier transform infrared spectroscopy, X-ray diffraction, X-ray photoelectron spectroscopy, catalysts, catalytic activity, glucose, hydroxymethylfurfural, iron phosphates, kinetics, process design, scanning electron microscopy
The production of 5-hydroxymethylfurfural (HMF) from carbohydrates is scientifically valuable but technologically challenging. The silica-supported phosphate and ironic phosphate heterogeneous catalyst H₃PO₄–SiO₂–FePO₄(0.15) was prepared and used to catalyze the conversion of glucose to 5-hydroxymethylfurfural (HMF). The morphologies, acidic properties and surface chemical state of the H₃PO₄–SiO₂–FePO₄(0.15) were characterized via XRD, FTIR, Py-FTIR, SEM, XPS, and NH₃-TPD. The H₃PO₄–SiO₂–FePO₄(0.15) gave a high yield of HMF (76.3%) from glucose under 433 K for 100 min. The H₃PO₄–SiO₂–FePO₄(0.15) can be used for four runs without significant decrease of catalytic activity. The influence of the reaction conditions on the HMF yields is investigated, and the kinetic analysis was also carried out for the present catalytic system.