//Cobalt/Manganese/Bromide CMB Manufacturing Process of Aromatic Dicarboxylic Acids by Using a Cobalt/Manganese/Bromide Catalyst System Having Improved Oxidation Reaction Efficiency

摘要

The present invention relates to a process for manufacturing aromatic dicarboxylic acids, such as isophthalic acid, by oxidizing xylene in the presence of a cobalt/manganese/bromide (CMB) catalyst system, and to a method of improving oxidation reaction efficiency of a catalyst by adding zirconium bromide as a bromine precursor in an activation process of a catalyst component recovered from a mother liquor of the oxidation reaction of xylene containing the CMB catalyst system.