Industrial process to manufacture aromatic carboxylic acids

摘要

The process that involves liquid phase catalytic oxidation of a mono- or poly-substituted alkyl aromatic compound comprises: (i) microdispersion of the 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 DEG -40 DEG 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.