EXHAUST GAS PURIFYING CATALYST

The invention discloses a catalyst for purifying exhaust gas apparatus having a Three-way Catalyst (TWC) superior in purification performance of, particularly, NO x , among carbon monoxide (CO), hydrocarbons (HC), and nitrogen oxides (NO x ), in exhaust gas discharged from a gasoline automobile. It is provided by a catalyst for purifying exhaust gas containing a Rhodium (Rh)-supported porous inorganic oxide and barium sulfate (BaSO 4 ), with supported or not-supported onto alumina, characterized in that at least a part of Rh is present independently from Ba inside a catalyst layer, and Rh-Ba deviation rate determined from EPMA analysis is 10% to 80%. It is preferable that supported amount of Rhodium is 0.05 g/L to 2.0 g/L, and amount of barium sulfate is 0.5 g/L to 25 g/L and 0.5 g/L to 15 g/L, in the case of being supported and not-supported onto alumina, respectively.