| 摘要 |
PURPOSE:To clean all of harmful components present in exhaust gas with high efficiency by attaching such catalyst components as cerium oxide, platinum, and palladium to a support obtained by forming a porous layer of an oxide on the surface of a honeycomb structure, etc. CONSTITUTION:A support 2 of a porous layer composed of ziroconium oxide powder or a mixture of the zirconium oxide powder and one of alumina, alumina- magnesia spinel, and cerium oxide powder is formed on the surface of a fire-proof base material 1 of a honeycomb structure, etc. And, a catalyst component 3 composed of any one or both of cerium oxide and platinum or palladium is attached to the said support. The catalyst thus obtained is excellent in durability and capable of cleaning NOx, CO, and hydrocarbons present in exhaust gas discharged from internal combustion engine, etc., with high efficiency. |
