Patent ID: 8133837

Claim:
An exhaust gas-purifying catalyst comprising: a substrate; a hydrocarbon-adsorbing layer covering the substrate; and a catalytic layer covering the hydrocarbon-adsorbing layer, wherein the catalytic layer includes a layered structure of a first catalytic layer including a precious metal and a carrier supporting it, and a second catalytic layer including the same precious metal as the above precious metal and a carrier supporting it, a concentration of the precious metal in the second catalytic layer being higher than that in the first catalytic layer, wherein each of the first and second catalytic layers includes palladium, a concentration of palladium in the second catalytic layer being higher than that in the first catalytic layer, and wherein each of the first and second catalytic layers further includes rhodium, a concentration of rhodium in the second catalytic layer being higher than that in the first catalytic layer.