Catalytic performance of vanadyl pyrophosphate-KIT-6 on dehydration of glucose and fructose into 5-hydroxymethylfurfural

Vanadium phosphate oxide compounds (VPO) are heterogeneous catalysts having different phases and morphologies. Vanadyl pyrophosphate phase has been vastly applied in the industry for the oxidation of butane into maleic anhydride.1 While application of VPO catalysts in oxidation reactions have been widely documented, there are a few reports on the application of these interesting materials as the solid acid catalyst. We synthesized a series of vanadyl pyrophosphate catalysts supported on the surface of KIT-6 in the mixture of benzyl alcohol/iso-butyl alcohol. The catalysts, as the solid acid, employed in dehydration reaction of fructose and glucose into 5-HMF, due to the importance of 5-HMF.2,3 The catalysts were characterized by FT-IR spectroscopy, Raman spectroscopy, ICP-OES, XRD, BET, and NH3-TPD techniques as well as SEM, TEM, and XPS. The current study obviously illustrated the role of surface area on the catalytic performance of these types of catalysts in the selective dehydration of fructose and glucose into 5-HMF.

کلیدواژه ها:

Biomass conversion ، 5-hydroxymethylfurfural ، Glucose and fructose dehydration ، Mesoporous KIT-6 silica ، VPO catalyst