OXIDATION CATALYST FOR DIESEL ENGINE-FITTED VEHICLES FOR TRANSPORTING PASSENGERS, GOODS AND FOR NON-TRANSPORTATION WORK Russian patent published in 2013 - IPC B01J21/04 B01J21/12 B01J23/42 B01J35/10 B01D53/94 

FIELD: chemistry.

SUBSTANCE: present invention relates to reducing toxicity of exhaust gases of diesel engines of vehicles for transporting passengers, goods and for non-transportation work. Described is an oxidation catalyst, having a housing support and a catalytically active coating made from platinum, active aluminium oxide and a mixed oxide of aluminium and silicon, wherein the aluminium oxide and mixed oxide of aluminium and silicon are catalytically activated with platinum which is present in the active aluminium oxide in amount of 55-95 wt % of its total amount present in the catalyst, and in the remaining amount is deposited on the mixed oxide of aluminium and silicon, wherein the quantitative ratio of aluminium oxide to the mixed oxide of aluminium and silicon ranges from 1:1.5 to 1:4. Described are systems for reducing toxicity of exhaust gases for vehicles with diesel engines (versions), in which the oxidation catalyst described above is placed on the path of exhaust gases before the particle filter, or the oxidation catalyst described above is placed on the path of exhaust gases before a selective catalytic reduction catalyst. Described is a method of reducing toxicity of exhaust gases using the oxidation catalyst.

EFFECT: high efficiency with respect to oxidation of NO with high resistance to poisoning with sulphur compounds.

13 cl, 4 dwg, 4 ex