| 摘要 |
PCT No. PCT/EP88/01126 Sec. 371 Date Oct. 10, 1989 Sec. 102(e) Date Oct. 10, 1989 PCT Filed Dec. 8, 1988 PCT Pub. No. WO89/05187 PCT Pub. Date Jun. 15, 1989.A catalyst is used for removing toxic substances from the exhaust gases of combustion installations and internal combustion engines, by reduction with carbon monoxide, hydrogen, hydrocarbons or ammonia. The 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 microns. This powder is then processed to form a catalytically active layer.
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