| 摘要 |
An exhaust gas purifying catalyst exhibiting high catalytic performance and restraining an amount of noble metals used is provided. An exhaust gas purifying catalyst (1) has a catalyst substrate (3) and a catalyst coating layer (5), (7) formed on the catalyst substrate (3). The catalyst coating layer (5), (7) has a layered structure including an inside layer (5) containing (a-1) Pd, (a-2) Pt, and (a-3) an inorganic oxide, and an outside layer (7) containing (b-1) a noble metal and (b-2) an inorganic oxide. A part of (a-3) the inorganic oxide carries Pd and Pt so that a weight ratio Pd/Pt is within a range of 8 to 12, whereas the other part of (a-3) the inorganic oxide carries Pd and Pt so that a weight ratio Pd/Pt is within a range of 4 to 6 or within a range of 18 to 22. |
