Ru/C催化5-羟甲基糠醛选择氧化高效合成2,5-呋喃二甲醛  

Activated carbon-supported ruthenium as an efficient catalyst for selective aerobic oxidation of 5-hydroxymethylfurfural to 2,5-diformylfuran

作　　者：聂俊芳[1] 解佳翰 刘海超[1] 

机构地区：[1]北京大学化学与分子工程学院北京分子科学国家实验室/分子动态与稳态结构国家重点实验室,北京100871

出　　处：《催化学报》2013年第5期871-875,共5页

基　　金：国家自然科学基金(20825310,20973011,21173008);国家重点基础研究发展计划(973计划,2011CB808700,2011CB201400)~~

摘　　要：在活性炭负载金属钌(Ru/C)催化剂上实现了5-羟甲基糠醛的高效选择氧化.以甲苯为反应溶剂,在383K和2.0MPaO2的反应条件下,2,5-呋喃二甲醛(DFF)收率高达95.8%.与活性炭负载的具有相似粒径的Pt,Rh,Pd,Au等其它贵金属催化剂相比,Ru/C具有更加优良的活性和DFF选择性.同时Ru/C催化剂结构稳定,具有良好的重复使用性能.在相似的反应条件下,采用水代替甲苯作为溶剂,同时添加少量水滑石固体碱,可便捷地将主要产物从DFF调变为5-甲酰基-2-呋喃甲酸或2,5-呋喃二甲酸,显示出Ru/C催化剂在控制5-羟甲基糠醛选择氧化反应产物方面的优异性能.The aerobic oxidation of 5-hydroxymethylfurfural (HMF) to 2,5-diformylfuran (DFF) was per-formed on an activated carbon-supported ruthenium (Ru/C) catalyst. The excellent DFF yield of 95.8% was achieved at 383 K and O2 pressure 2.0 MPa in toluene. It exhibited superior activity and DFF selectivity than other C-supported noble metals (i.e. Pt, Rh, Pd, and Au) with comparable nano-particle size. The Ru/C catalyst was stable and can be recycled by a simple hydrothermal treatment. Moreover, the product distribution in the HMF oxidation on Ru/C can be tuned by the use of water as solvent and the addition of hydrotalcite, giving either 5-formyl-2-furancarboxylic acid or 2,5-furandicarboxylic acid as the dominant product.

关 键 词：生物质 5-羟甲基糠醛 2 5-呋喃二甲醛 选择氧化 钌催化剂 

分 类 号：O626.11[理学—有机化学] O621.36[理学—化学]