Exhaust treatment system including a nickel-based catalyst
AssigneeFord Global Technologies, LLC
InventorsJeffrey Scott Hepburn, Hungwen Jen, Eva Thanasiu
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Abstract
A nickel-based catalyst is provided for reducing carbon monoxide, hydrocarbon emissions, and nitrogen oxides from vehicle exhausts. The catalyst is impregnated directly onto a carrier which is non-reactive with nickel. The nickel is contained on said carrier at a loading of between about 2 to about 20 wt %. When used in a vehicle exhaust gas treatment system, the catalyst provides improved efficiency in reducing CO, HC, and NOx emissions over the use of conventional three-way-catalysts.
Claims25
A catalyst for reducing carbon monoxide, hydrocarbon emissions, and nitrogen oxides from a vehicle exhaust comprising:
- a nickel-based catalyst comprising nickel deposited directly onto a carrier, wherein said carrier is non-reactive with nickel.
A catalyst for reducing carbon monoxide, hydrocarbon emissions and nitrogen oxides from a vehicle exhaust comprising:
- from about 2 to 20 wt % nickel loaded directly onto a carrier, wherein said carrier is non-reactive with nickel.
A vehicle exhaust gas treatment system comprising:
- a nickel-based catalyst positioned in the exhaust passage of a vehicle;
- said catalyst impregnated directly onto a carrier, wherein said carrier is non-reactive with nickel.
A method of providing a nickel catalyst on a carrier substrate comprising:
- providing a carrier substrate selected from zirconium oxide, cordierite, silicon carbide, or silica gel;
- and
- directly impregnating said carrier substrate with a nickel solution selected from nickel nitrate, nickel acetate, nickel carbonate, nickel sulfate, and combinations thereof.
A method for treating engine exhaust gases comprising:
- providing a nickel-based catalyst in an exhaust passage of an engine, said catalyst impregnated directly onto a carrier, wherein said carrier is non-reactive with nickel;
- exposing said catalyst to engine exhaust gas emissions containing carbon monoxide (CO), hydrocarbons (HC) and NOx such that at least a portion of said emissions are converted to CO2, H2O and N2 at a temperature between about 200° C. to 1000° C.
Dependencies are inferred from the claim text.