Diesel particulate filter
AssigneeHaldor Topsoe A/S
InventorGurli Mogensen
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Abstract
The invention provides a process and filter for catalytic purification of exhaust gas from a diesel engine by passing the exhaust gas through a wall flow filter provided with material being catalytic active in the reduction of nitrogen oxides to nitrogen and oxidation of carbonaceous compounds to carbon dioxide and water. The wall flow filter is prepared from silicon carbide and provided with a layer of titanium dioxide on its surface and wherein the catalytic active material comprises oxides of vanadium, tungsten and metallic palladium.
Claims9
Process for catalytic purification of exhaust gas from combustion of a diesel fuel comprising
- passing the exhaust gas through a wall flow filter provided with material being catalytic active in the reduction of nitrogen oxides to nitrogen and oxidation of carbonaceous compounds to carbon dioxide and water, wherein the wall flow filter is prepared from sintered silicon carbide particles and provided with a layer of titanium dioxide on the surface of each particle and wherein the catalytic active material comprises oxides of vanadium, tungsten and metallic palladium.
A wall flow filter for use in the purification of exhaust from a diesel engine, wherein the wall flow filter is prepared from sintered silicon carbide particles and provided with a porous layer of titanium dioxide on the surface of each particle and wherein the catalytic active material supported by the titanium dioxide comprises oxides of vanadium, tungsten and metallic palladium.
Dependencies are inferred from the claim text.