System and Method for ZPGM Catalytic Converters
First Claim
1. A catalytic converter comprising:
- a substrate;
a washcoat on the substrate; and
an overcoat on the washcoat;
wherein the washcoat includes an oxide solid comprising least one a carrier material oxide milled with at least one catalyst;
wherein the washcoat includes a first impregnation composition that includes at least one selected from the group comprising transition metals, alkali and alkaline earth metals, cerium, lanthanum, yttrium, lanthanides, actinides, or mixtures thereof; and
wherein the first impregnation composition is absorbed by the washcoat.
3 Assignments
0 Petitions
Accused Products
Abstract
Compositions and methods for the preparation of ZPGM oxidation catalytic converters are disclosed. ZPGM catalyst systems may be employed within catalytic converters under lean hydrocarbon, air to fuel ratio condition to oxidize toxic gases, such as carbon monoxide and other hydrocarbons that may be included in exhaust gas. ZPGM oxidation catalyst systems are completely free of PGM catalyst and may include: a substrate, a washcoat, and an overcoat. Washcoat may include silver as ZPGM catalyst, and carrier material oxides. Similarly, overcoat may include at least one ZPGM catalyst, carrier material oxides and OSMs. Overcoat of the disclosed ZPGM catalyst system may include copper and cerium as ZPGM catalysts. Suitable known in the art chemical techniques, deposition methods and treatment systems may be employed in order to form the disclosed ZPGM catalyst systems. ZPGM catalyst systems may include high surface area, low conversion temperature catalysts that may exhibit high efficiency in the conversion of exhaust gases
-
Citations
21 Claims
-
1. A catalytic converter comprising:
-
a substrate; a washcoat on the substrate; and an overcoat on the washcoat; wherein the washcoat includes an oxide solid comprising least one a carrier material oxide milled with at least one catalyst; wherein the washcoat includes a first impregnation composition that includes at least one selected from the group comprising transition metals, alkali and alkaline earth metals, cerium, lanthanum, yttrium, lanthanides, actinides, or mixtures thereof; and wherein the first impregnation composition is absorbed by the washcoat. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
-
14. A catalytic converter comprising:
-
a substrate; a washcoat located on the substrate; and an overcoat located on the washcoat; wherein the washcoat includes an oxide solid consisting of at least one of a carrier material oxide precipitated with at least one catalyst; wherein the washcoat includes a first impregnation composition; wherein the first impregnation composition includes at least one selected from the group comprising transition metals, alkali and alkaline earth metals, cerium, lanthanum, yttrium, lanthanides, actinides, or mixtures thereof; and wherein the first impregnation composition is absorbed by the washcoat. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21)
-
Specification