In this work novel copper-alumina catalysts were prepared through a solvent-free solid-state grinding method ― a low cost and green catalyst preparation method for selective hydrogenation of 5-hydroxymethylfurfural (5-HMF) into 2,5-bis(hydroxymethyl)furan (BHMF). Under the optimized reaction conditions (3 MPa H₂, 130 °C, 1 h), >99 % 5-HMF conversion and 93 % BHMF yield were obtained by using a 20CA (20 mol%Cu-Al₂O₃) catalyst. The catalyst characterization results could reveal that the high catalytic activity and selectivity could be attributed to the presence of both metallic and electrophilic copper (Cu°/Cu²⁺) species and the uniformly distributed copper nanoparticles. Furthermore, an integrated catalytic process was demonstrated for the first time for direct conversion of mono, di, and polysaccharides into the corresponding BHMF, obtained overall BHMF yield in the range of 25 %–48 %.

在这项工作中，通过无溶剂的固态研磨方法制备了新颖的铜铝催化剂-一种低成本，绿色的催化剂制备方法，用于将5-羟甲基糠醛（5-HMF）选择性氢化为2,5-双（羟甲基）呋喃（BHMF）。在优化的反应条件（3兆帕ħ ₂，130℃，1个小时），> 99％5-HMF的转化率和93％BHMF收率通过使用20CA（20摩尔％的Cu-Al系获得的₂ ö ₃）催化剂。催化剂的表征结果表明，高催化活性和选择性可能归因于金属铜和亲电铜（Cu°/ Cu ²⁺）和均匀分布的铜纳米粒子。此外，首次展示了一种综合催化工艺，可将单糖，二糖和多糖直接转化为相应的BHMF，获得的总BHMF产率为25％–48％。