METHOD OF THE PURIFICATION OF THE EXHAUST GAS FROM A LEAN-BURN ENGINE USING A CATALYST

摘要

This invention concerns a catalyst for purifying the exhaust gas from a lean-burn engine, which includes a refractory inorganic oxide carrying platinum thereon, a cerium-containing oxide carrying palladium thereon, and an alkali metal compound and/or an alkaline earth metal compound, and a method for the production of the catalyst.