CATALYST FOR WASTE GAS SCRUBBING FROM INTERNAL COMBUTION ENGINES AND METHOD FOR ITS PREPARATION

摘要

The catalyst and the method for its preparation find application in the treatment of carbon oxide (CO), hydrocarbons (HC), nitrogen oxides (NaOx) and fumes in treated gases from diesel and petrol engines. The catalyst ensures high catalytic activity in wide concentration ranges of the active components, stability against catalytic poisons such as SO2 and H2O, lower start-up temperatures and temperatures for reaching conversion of noxious substances such as CO, HC, Nox and fuming. The catalyst is two-layered type, the first layer being modified gamma-Al2O3 carrier with surface mixed oxides Cu(Alx)Oy, and the second layer being copper-cobalt oxide of spinel structure having formula Cux CO3-x O4(O