【摘要】 开发绿色高效催化剂将碳水化合物转化为平台化合物5-羟甲基糠醛是生物质再循环利用研究的目标。以氧化石墨（GO）和P25TiO₂为原料,采用一步水热法制备了3种不同石墨烯质量分数的钛酸纳米管/石墨烯（H₂Ti₃O₇NT/RGO）复合材料,利用XRD、SEM、TEM、BET表征手段对其进行物相结构、微观形貌、比表面积分析,并采用微波辅助加热方法将其应用于催化果糖脱水制备5-羟甲基糠醛。研究结果表明:采用微波辅助加热方法可以缩短反应时间,当石墨烯质量分数为5%时,以二甲基亚砜（DMSO）为溶剂,反应温度为150℃,反应时间为9 min时,利用钛酸纳米管和石墨烯的协同作用,5-羟甲基糠醛收率可达到51.1%,并且该催化剂具有良好的重复使用性能,重复使用3次5-HMF收率基本保持不变。更多还原

【Abstract】 The development of green and high-efficient catalysts to convert carbohydrates to the platform compound 5-hydroxymethylfurfural is the goal of biomass recycling research. In this paper, three different graphene mass fractions of titanate nanotubes/graphene composites were prepared by one-step hydrothermal method using graphite oxide（GO） and P25 TiO₂ as raw materials. The phase structure, micromorphology and specific surface area were analyzed by the characterization method of XRD, SEM, TEM, BET, and it was firstly applied to catalyze the dehydration of fructose to prepare 5-hydroxymethylfurfural by microwave assisted heating. The results show that the reaction time can be shortened by microwave-assisted heating. When the mass fraction of graphene is 5%, dimethyl sulfoxide（DMSO） is used as solvent, reaction temperature is 150 ℃ and reaction time is 9 min, utilizing the synergistic effect of titanate nanotubes and graphene,the yield of 5-hydroxymethylfurfural can reach 51.1%. Moreover, the catalysts could be reused three times without losing its catalytic activity.更多还原