| abstract |
An exhaust gas purification catalyst material capable of improving exhaust gas purification performance is provided. An exhaust gas purifying catalyst material for purifying exhaust gas discharged from an engine includes ZrO 2 as a main component, La 2 O 3 of 2% by mass to 10% by mass, and 2% by mass. A ZrLaY composite oxide containing 20% by mass or less of Y 2 O 3 is contained, and Rh is supported on the composite oxide. [Selection] Figure 1 |