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.
一种通过使
碳水化合物源与固相催化剂接触,从
碳水化合物源生产基本纯净的
HMF、
HMF 酯和其他衍
生物的方法。
碳水化合物起始原料在柱中的溶剂中加热,并在有机酸存在下连续流过固相催化剂,或在溶液中与有机酸和固相催化剂一起加热以形成
HMF 酯。在不使用有机酸的情况下加热则会形成
HMF。所得产物通过过滤进行提纯,以除去未反应的起始原料和催化剂。然后,将
HMF 酯与有机酸、
醋酸钴、
醋酸锰和
溴化钠加压混合,可将
HMF 酯或
HMF 和
HMF 酯的混合物氧化成
2,5-呋喃二甲酸(
FDCA)。另一种方法是将
HMF 酯还原成
呋喃或
四氢呋喃二醇。