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US 2014/0271392 A1Published application
System and Method for Two and Three Way ZPGM Catalyst
AssigneeCdti
InventorZahra Nazarpoor
Life of this patent
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Abstract
Disclosed here are material formulations of use in the conversion of exhaust gases, where the formulations may include Copper (Cu), Cerium (Ce), Tin (Sn), Niobium (Nb), Zirconium (Zr), Calcium (Ca) and combinations thereof.
Claims16
An apparatus for reducing emissions from an engine having associated therewith an exhaust system, the apparatus providing a reaction effective for catalytic conversion of hydrocarbons, nitrogen oxides and carbon monoxide from an exhaust source, the apparatus comprising:
- a catalyst system, comprising:
- a substrate;
- a catalyst;
- a washcoat suitable for deposition on the substrate;
- and
- an overcoat suitable for deposition on the substrate or the washcoat;
- wherein the catalyst comprises about 5% to about 15% by weight of copper, about 5% to about 15% by weight of cerium, and about 5% to about 15% by weight of one selected from the group consisting at least one of calcium, niobium, zirconium, and tin;
- and
- wherein the catalyst is suitable for deposition on a coat selected from the group consisting of at least one of the washcoat and the overcoat.
6 more elements
Dependencies are inferred from the claim text.