Producing 2,5-furandicarboxylic acid from mixed feed
OwnerJeffrey John Kolstad, Jan Hendrik Blank +1inventors
InventorsJeffrey John Kolstad, Jan Hendrik Blank, Gerardus Johannes Maria Gruter
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Abstract
Process for producing 2,5-furandicarboxylic acid, comprising the steps of: a) oxidizing feed comprising 5-methylfurfural using an oxidizing gas at a temperature in the range of 150 to 210° C. to obtain a crude carboxylic acid composition comprising 2,5-furandicarboxylic acid in the presence of acetic acid and a catalyst system comprising cobalt, manganese and bromine; and b) separating at least a portion of the solid 2,5-furandicarboxylic acid from the crude carboxylic acid composition to obtain crude solid 2,5-furandicarboxylic acid, wherein the feed further comprises alkoxymethyl-2,5-furfural of which the alkoxy group comprises of from 1 to 3 carbon atoms.
Claims10
A process for producing 2,5-furandicarboxylic acid, comprising the steps of:
- a) oxidizing feed comprising 5-methylfurfural using an oxidizing gas at a temperature in the range of 150 to 210° C. to obtain a crude carboxylic acid composition comprising 2,5-furandicarboxylic acid in the presence of acetic acid and a catalyst system comprising cobalt, manganese and bromine;
- and
- b) separating solid 2,5-furandicarboxylic acid from the crude carboxylic acid composition to obtain crude solid 2,5-furandicarboxylic acid,
- wherein the feed further comprises alkoxymethyl-2,5-furfural of which the alkoxy group comprises of from 1 to 3 carbon atoms.
Dependencies are inferred from the claim text.