PRODUCTION OF OXALACETIC ACID

摘要

PROBLEM TO BE SOLVED: To provide a process for producing oxalacetic acid in high efficiency by oxidizing malic acid with molecular oxygen. SOLUTION: Disodium malate is made to react with molecular oxygen as an oxidizing agent in an aqueous solvent in the presence of a catalyst containing a noble metal such as platinum and a base metal such as lead. Oxalacetic acid can be produced in high efficiency by the use of the catalyst of the present invention consisting of a combination of a noble metal with a base metal.