A method of producing substantially pure HMF, HMF esters and other derivatives from a carbohydrate source by contacting the carbohydrate source with a solid phase catalyst. A carbohydrate starting material is heated in a solvent in a column and continuously flowed through a solid phase catalyst in the presence of an organic acid, or heated with the organic acid and a solid catalyst in solution to form a HMF ester. Heating without organic acid forms HMF. The resulting product is purified by filtration to remove the unreacted starting materials and catalyst. The HMF ester or a mixture of HMF and HMF ester may then be oxidized to 2,5-furandicarboxylic acid (FDCA) by combining the HMF ester with an organic acid, cobalt acetate, manganese acetate and sodium bromide under pressure. Alternatively, the HMF ester may be reduced to form a furan or tetrahydrofuran diol.
一种从
碳水化合物源直接生产几乎纯的
HMF、
HMF酯和其他衍
生物的方法是将
碳水化合物源与固相催化剂接触。
碳水化合物起始物质在溶剂中加热于柱中,并在有机酸存在下通过固相催化剂连续流动,或者与有机酸和溶液中的固体催化剂一起加热以形成
HMF酯。在无有机酸的情况下加热会形成
HMF。通过过滤将产物纯化,去除未反应的起始物质和催化剂。然后,
HMF酯或
HMF和
HMF酯的混合物可以氧化为
2,5-呋喃二甲酸(
FDCA),方法是将
HMF酯与有机酸、
醋酸钴、
醋酸锰和
溴化钠在压力下结合。另外,
HMF酯可以还原形成
呋喃或
四氢呋喃二醇。