Process for producing terephthalic acid

Details Process for producing terephthalic acid Process for producing terephthalic acid

C - Chemistry, Metallurgy

07

C

260/511

C07C 51/255 (2006.01) B01J 27/08 (2006.01) B01J 31/04 (2006.01) B01J 31/30 (2006.01)

Patent

CA 1038401

PROCESS FOR PRODUCING TEREPHTHALIC ACID ABSTRACT OF THE DISCLOSURE Terephthalic acid is produced by oxidizing, in a liquid phase, p-tolualdehyde with a gas contain- ing molecular oxygen, for example, air, in the pre- sence of a catalyst consisting each of (1) a manganese compound, (2) a cobalt compound, (3) a bromine com- pound, and (4) at least one compound selected from the group consisting of chromium compounds, iron compounds, nickel compounds and compounds of metallic elements belonging to the lanthanide series, using a lower aliphatic monocarboxylic acid as a solvent.

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