Catalytic Conversion Of Fructose To 2,5-Diformylfuran

2,5-Diformylfuran(DFF) has extensive application in many fields, and its commercial price is very expensive.5-hydroxymethylfurfural (HMF), which can be converted from carbohydrate, is an important platform molecule. Selective oxidation of HMF is the only practical process to produce DFF. A process for synthesis of DFF from renewable biomass fructose may be more significance of environmental protection energy conservation and practical application value. In this paper, with Amberlyst-15 as the catalyst for converting fructose to HMF and M-OMS-2(M=Ce, Fe, Co, Ni, Ag, Cu) as the heterogeneous catalysts for selective aerobic oxidize HMF to DFF, one-pot two-step catalytic conversion of fructose to DFF was investigated.Transition metal doped M-OMS-2 catalysts were prepared. The morphology and structure of the molecular sieve catalysts were characteristics. The yield of DFF and HMF of one-pot catalytic conversion of fructose as the function of reaction temperature, reaction time, the amount of catalyst being added to the system, the initial concentration of fructose were studied. The effect of transition metal doping into the OMS-2 on the catalytic activity were discussed.For the production of DFF from fructose, an increased catalytic activity was observed for Cu-OMS-2. The effects of Cu doping into the structures and reactivity of OMS-2 were investigated and discussed. The strength and amount of acid sites on the surface of Cu-OMS-2 catalysts were compared with K-OMS-2.