Catalytic oxidation of uronic acids to aldaric acids

D.S. van Es (Inventor), J. van Haveren (Inventor), J.M. Raaijmakers (Inventor), F. van der Klis (Inventor), S. van Engelen (Inventor), A.E. Frissen (Inventor)

Research output: Patent


Disclosed is the oxidation of uronic acids, such as galacturonic acid, to the corresponding aldaric acids (characterized by the formula HOOC-(CHOH)n-COOH, with n being an integer of from 1 to 5) such as galactaric acids. The starting material comprising the uronic acid is subjected to oxygen under the influence of a supported gold catalyst and in the presence of a base. The oxidation occurs in good selectivity and yield, under unexpectedly mild conditions. A source of galacturonic acids is pectin, such as that derived from sugar beet pulp.
Original languageEnglish
Patent numberWO2013151428
Priority date4/04/12
Publication statusPublished - 10 Oct 2013


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