| abstract |
(57) Abstract: An organic bromine compound-containing exhaust gas containing a non-halogenated organic compound and / or carbon monoxide is brought into contact with a catalyst without using ammonia to form carbon monoxide and the like in the exhaust gas. Provided is a method for purifying highly efficiently and economically by simultaneously oxidatively decomposing an organic bromine compound. SOLUTION: (A) a composite oxide of two or more metals selected from Ti, Si and Zr, (B) an oxide of at least one metal selected from Cu, V, W and Cr, And (C) a catalyst containing at least one metal element selected from Pd, Pt, Rh, Ir and Ru or an oxide thereof. |