METHOD OF PRODUCING TEREPHTHALIC ACID Russian patent published in 2014 - IPC C07C63/26 C07C51/43 C07C51/265 C07C51/42 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing terephthalic acid from para-xylene, which includes forming a mixture containing para-xylene, a solvent, a bromine source, a catalyst and ammonium acetate; and oxidising the para-xylene by contacting the mixture with an oxidising agent in oxidation conditions to obtain a solid oxidation product containing terephthalic acid, 4-carboxybenzaldehyde and para-toluic acid; wherein the solvent includes a carboxylic acid having 1-7 carbon atoms, and optionally water, and the catalyst substantially consists of at least one metal selected from cobalt, titanium, manganese, chromium, copper, nickel, vanadium, iron, molybdenum, tin, cerium and zirconium, present in the form of acetates or hydrates thereof.

EFFECT: method enables to obtain an end product of high purity.

10 cl, 1 tbl, 3 ex