| abstract |
PROBLEM TO BE SOLVED: To improve durability of an exhaust gas purification catalyst containing rhodium. An exhaust gas purification catalyst 10 is formed by laminating at least two catalyst layers. The exhaust gas purification catalyst 10 includes a catalyst layer 11 containing at least Rh and a catalyst layer 12 containing at least one oxide selected from {Fe, Mn, Ni, Co}. The catalyst layer 12 containing at least one oxide selected from {Fe, Mn, Ni, Co} is on the upper layer side than the catalyst layer 11 containing at least Rh. [Selection] Figure 2 |