| 摘要 |
A catalyst (1) is useful for removing noxious substances from the exhaust fumes of internal combustion installations and internal combustion engines, by reduction with carbon monoxide, hydrogen, hydrocarbons or ammonia. Said catalyst is produced using a single-phase or multi-phase mixed oxide system with a pure perovskite structure or a perovskite and spinel structure. To produce the catalyst, carbonates or oxides of lanthanum, strontium, manganese, iron and copper are mixed, crushed, dried, and ground to a fine powder with a particle size between 0.1 and 5 mu m. This powder is then processed to form a catalytically active layer. |
