Oxidation process to produce a crude and/or purified carboxylic acid product

摘要

Disclosed is an oxidation process to produce a crude carboxylic acid product carboxylic acid product. The process comprises oxidizing a feed stream comprising at least one oxidizable compound to generate a crude carboxylic acid slurry comprising furan-2,5-dicarboxylic acid (FDCA) and compositions thereof. Also disclosed is a process to produce a dry purified carboxylic acid product by utilizing various purification methods on the crude carboxylic acid.

主权项

1. A carboxylic acid composition comprising furan-2,5-dicarboxylic acid solids, said solids comprising:
(a) furan-2,5-dicarboxylic acid in an amount greater than 90 weight percent; (b) a b* value of less than 15; (c) 5-formyl furan-2-carboxylic acid (FFCA) in a range of from about 0.1 to about 4.0 weight percent; and (d) 5-(ethyoxycarbonyl)furan-2-carboxylic acid (EFCA) in an amount from 0.1 to 4 wt %.