OXIDATION CATALYST FOR VEHICLES EQUIPPED WITH A DIESEL ENGINE FOR TRANSPORTATION OF PASSENGERS, CARGOES AND FOR NON-VEHICLE WORKS

摘要

1. The oxidation catalyst having a support body and a catalytically active coating of platinum, active alumina and mixed alumina and silicon oxide, characterized in that the alumina and mixed alumina and silicon oxide are catalytically activated by platinum, which is present on the active alumina in an amount from 55 to 95 wt.% of the total amount present in the catalyst, and in the rest, is deposited on a mixed alumina and silicon oxide, with a quantitative ratio between alumina and cm shannym alumina and silicon is from 1: 1.5 to 1: 4. ! 2. The oxidation catalyst according to claim 1, characterized in that the mixed alumina and silicon oxide contains SiO2 in an amount of from 5 to 40 wt.%, Calculated on the total weight of the mixed alumina and silicon. ! 3. The oxidation catalyst according to claim 2, characterized in that the mixed alumina and silicon oxide has a specific surface area of more than 60 m2 / g (determined by the Brunauer-Emmett-Teller method for nitrogen adsorption (BET surface)). ! 4. The oxidation catalyst according to one of claims 1 to 3, characterized in that the content of platinum in it is from 0.07 to 7 g per liter of volume of the carrier body. ! 5. The oxidation catalyst according to claim 4, characterized in that in addition to platinum it does not contain any other noble metal, first of all it does not contain palladium and rhodium. ! 6. The oxidation catalyst according to claim 4, characterized in that it does not contain any other noble metal selected from the group comprising iridium, ruthenium and gold. ! 7. The oxidation catalyst according to claim 1, characterized in that it does not contain rare earth oxides, especially does not contain cerium oxide, lanthanum oxide, oxide