| abstract |
Disclosed is an exhaust gas purifying catalyst which can sufficiently exhibit catalytic precious metal purification performance and has excellent low temperature purification performance and warm-up performance of the catalyst. SOLUTION: A base material 1 forming a gas flow path through which exhaust gas flows and a catalyst layer 10 formed on the base material 1, and the catalyst layer 10 is a lower catalyst formed on the surface of the base material 1. Layer 2, a front upper catalyst layer 3 covering the upstream side of the gas flow direction on the surface of the lower catalyst layer 2, and a surface of the lower catalyst layer 2 downstream of the front stage upper catalyst layer 3 in the gas flow direction An exhaust gas purifying catalyst comprising a rear upper catalyst layer 4 covering the side, wherein the lower catalyst layer 2 carries at least one of Pd and Pt, and the rear upper catalyst layer 4 carries Rh. The exhaust gas purifying catalyst, wherein the upstream catalyst layer 3 supports Pd, and the carrier supporting Pd of the upstream catalyst layer 3 is a ZrO 2 composite oxide containing Y 2 O 3 . [Selection] Figure 1 |