| abstract |
(57) [Problem] It is an object of the present invention to provide an exhaust gas purifying catalyst having a high exhaust gas purifying rate and to provide an exhaust gas purifying material which is extremely excellent in durability and economy. SOLUTION: The exhaust gas purifying catalyst of the present invention comprises at least one kind of an inorganic oxide having heat resistance and a first catalyst having an oxide catalyst layer of a transition metal supported on the surface of the inorganic oxide and a noble metal layer. And a second catalyst having a sulfate of an alkali metal. Further, the exhaust gas purifying material of the present invention has a three-dimensional structure having heat resistance, A first catalyst having a heat-resistant inorganic oxide formed on the three-dimensional structure, a transition metal oxide catalyst layer supported on the surface of the inorganic oxide, and a noble metal layer; And a second catalyst having a kind of alkali metal sulfate, and a layer of an exhaust gas purifying catalyst. |