Abstract
2, 5-Dimethylfuran (DMF), which is one of the most promising liquid biofuels, has received widely concern due to the development and utilization of biomass energy. In this work, Ni/ZSM-5 catalysts with different nickel content were prepared by a simple solid-phase grinding synthesis method and exhibited a significant activity for the selective hydrogenolysis of 5-hydroxymethylfurfural (HMF) to produce DMF. The characterization of catalysts was tested by XRD, FT-IR, TG-DTG and N2 adsorption–desorption techniques. The effects of nickel loading ratios, reaction conditions and reaction mechanism were investigated. Under optimal experimental conditions, HMF conversion of 91.2% and DMF selectivity of 96.2% were obtained. It was found that a suitable proportion of metal sites and acidic sites on the catalyst surface were important for the selective hydrogenolysis, and 5-methylfurfural was detected as an important intermediate product in this reaction.
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