EXHAUST GAS PURIFYING CATALYST

摘要

Decreasing HC emission is made possible. An exhaust gas-purifying catalyst (1) includes a substrate (2), a hydrocarbon-adsorbing layer (3) covering the substrate (2), and a catalytic layer (4) covering the hydrocarbon-adsorbing layer (3). The catalytic layer (4) includes a layered structure of a first catalytic layer (4a) including a precious metal and a carrier supporting it, and a second catalytic layer (4b) including the same precious metal as the precious metal of the first catalytic layer (4a) and a carrier supporting it and having a concentration of the precious metal higher than that in the first catalytic layer (4a).