Back to results
US 12,492,176 B2Granted
Process for preparation of 2, 5-furan dicarboxylic acid from 5-hydroxymethyl furfural
AssigneeCouncil of Scientific and Industrial Research
InventorsParesh Laxmikant Dhepe, Kalyani Gajananrao Sonone, Priya Laxmanrao Lokhande
Life of this patent
Estimating the term…
Abstract
The present invention provides a process for the synthesis of furan dicarboxylic acid (FDCA) from glucose or crude hydroxy methyl furfural (HMF) using mixed metal oxides catalyst. The present invention further provides a process for preparation of the mixed metal oxides catalyst.
Claims11
A process for synthesis of 2, 5-furan dicarboxylic acid from crude 5-hydroxymethyl furfural, the process comprising the steps of:
- a) reacting a glucose with a zeolite catalyst in a solvent at a temperature in the range of 165° C.-185° C. for a period of 5-6 hrs to obtain crude 5-hydroxymethyl furfural;
- b) optionally, purifying the crude 5-hydroxymethyl furfural as obtained in step (a) with a solvent by extraction method to obtain pure 5-hydroxymethyl furfural;
- c) reacting the 5-hydroxymethyl furfural as obtained in step (a) or (b) with a mixed metal oxide catalyst in a solvent at a temperature in the range of 120° C.-140° C. for 1-24 hrs under 10-20 bar O2/air pressure in the presence of a base to obtain 2,5-furan dicarboxylic acid.
Dependencies are inferred from the claim text.