Industrial process to manufacture aromatic carboxylic acids

Details Industrial process to manufacture aromatic carboxylic acids Industrial process to manufacture aromatic carboxylic acids

C - Chemistry, Metallurgy

07

C

C07C 63/00 (2006.01) B01J 4/04 (2006.01) C07C 51/265 (2006.01)

Patent

CA 2186058

A process that involves liquid-phase catalytic oxidation of a mono- or poly-substituted alkyl aromatic compound comprises (i) microdispersion of air in the reactor at a pressure between 15 and 25 atmospheres and at a rate between 200 and 500 kg/sec.m2; and (ii) recycling the catalyst by evaporation of the purge that contains it and leaching the resulting paste with distilled water at 20-40° C to dissolve the catalyst separating it from the rest of the components. Aromatic carboxylic acids are basic products used in a large number of industrial fields.

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