Abstract: ZSM-5 molecular sieves are used as carrier and phosphotungstic acid (TPA) is used as active ingredient to prepare molecular sieve supported phosphotungstic acid catalysts via impregnation method.The influences of the catalysts on fructose dehydration process are studied in order to realize the preparation of 5-hydroxymethylfurfural in a green and low-cost way.The structure,specific surface area,pore size and pore volume of the catalysts are investigated by XRD and BET.The influences of reaction temperature,reaction time and catalyst dosage on the yield of 5-hydroxymethylfurfural are examined.It is indicated that TPA/ZSM-5 with a mass ratio of 20:10 has a good dispersion and catalytic activity,over which the yield of 5-hydroxymethylfurfural can reach 77.62% as fructose dosage is 5 g,reaction temperature maintains at 140℃,reaction lasts for 2 h and catalyst dosage is 0.5 g.
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