Method for preparing 2,5-hexanedione from biomass

The invention discloses a method for preparing 2,5-hexanedione from biomass. According to the method for preparing 2,5-hexanedione from biomass in the invention, 2,5-hexanedione is obtained through conversion of a biomass raw material in a solvent system consisting of water and an oxygen-containing organic solvent, in a hydrogen atmosphere and under synergistic catalysis of an acidic metal salt and a supported noble metal. Through the above method, biomass resources which widely exist in the nature and contain cellulose and starch can be further converted into 2,5-hexanedione with a high additional value, reaction conditions are mild, the raw materials are low in price, and the yield of 2,5-hexanedione is high. 本发明公开了一种利用生物质制备2,5-己二酮的方法。一种利用生物质制备2,5-己二酮的方法，在由水和含氧有机溶剂组成的溶剂体系中，在氢气气氛下，采用酸性金属盐和负载型贵金属协同催化生物质原料转化得到2,5-己二酮。通过上述方法，可一步将自然界中广泛存在的含有纤维素和淀粉的生物质资源转化为具有高附加值的2,5-己二酮，反应条件温和，原料价格低廉，且2,5-己二酮的收率高。