Exhaust gas purification catalyst

An exhaust gas purification catalyst comprising:

• a substrate;
• and
• a catalyst layer disposed on the substrate,
• wherein the catalyst layer includes a lower catalyst layer disposed on the substrate, and an upper catalyst layer disposed on the lower catalyst layer,
• wherein the lower catalyst layer includes a powder material containing a powdered carrier, and catalyst metal particles containing Rh supported on the carrier,
• wherein the upper catalyst layer includes an upstream catalyst layer disposed in an upstream side in an exhaust gas flow direction, and a downstream catalyst layer disposed in a downstream side in the exhaust gas flow direction,
• wherein at least the upstream catalyst layer of the upstream catalyst layer and the downstream catalyst layer includes a powder material containing a powdered carrier, and catalyst metal particles containing Pd supported on the carrier, and
• wherein a cumulative 50% particle size D50 in a volume-based particle size distribution of the powder material included in at least the upstream catalyst layer of the upstream catalyst layer and the downstream catalyst layer is 6 μm or more and 10 μm or less.