| abstract |
An integrated process for the production of 2,5-furandicarboxylic acid and/or derivatives thereof from feedstock containing six-carbon sugars is described, comprising: a) in the presence of a bromine source and a solvent, dehydration of the feedstock of sugar units to produce an oxidation feedstock comprising at least one of 5-hydroxymethylfurfural and/or one or more derivatives of 5-hydroxymethylfurfural in the solvent , together with at least one bromine-containing species; b) contacting the oxidation feed from step (a) with a metal catalyst and an oxygen source under oxidation conditions to produce an oxidation product mixture comprising 2,5-furan di Formic acid (FDCA) and/or derivatives thereof, the solvent and residual catalyst; c) purify and separate the mixture obtained in step (b) to obtain FDCA and/or derivatives thereof and the solvent; and d) make in At least a part of the solvent obtained in step (c) is recycled to step (a). |