Methods for variation of support oxide materials for ZPGM oxidation catalysts and systems using same
First Claim
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1. A catalyst system, comprising:
- a substrate;
a washcoat suitable for deposition on the substrate, comprising Praseodymium-doped Zirconium oxide; and
an impregnation layer, comprising at least one second catalyst;
wherein the at least one second catalyst comprises about 1% to about 10% by weight silver about 10% to about 40% by weight lanthanum, and about 10% to about 30% by weight manganese.
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Abstract
Disclosed here are methods of preparing zero platinum group metal catalysts systems with different support oxide material. A ZPGM catalyst system may include a substrate and a washcoat and an impregnation layer, wherein said impregnation layer may include the ZPGM pervoskite catalyst and the washcoat layer may include the support oxides material. Suitable support oxides material may include ZrO2, ZrO2 doped with lanthanide group metals, Nb2O5, Nb2O5—ZrO2, Al2O3 and Al2O3 doped with lanthanide group metals, TiO2 and doped TiO2 or mixtures thereof.
8 Citations
6 Claims
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1. A catalyst system, comprising:
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a substrate; a washcoat suitable for deposition on the substrate, comprising Praseodymium-doped Zirconium oxide; and an impregnation layer, comprising at least one second catalyst; wherein the at least one second catalyst comprises about 1% to about 10% by weight silver about 10% to about 40% by weight lanthanum, and about 10% to about 30% by weight manganese. - View Dependent Claims (2)
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3. A catalyst system, comprising:
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a substrate; a washcoat suitable for deposition on the substrate, comprising at least one oxide solid selected from the group consisting of a carrier material oxide, at least one first catalyst, and a mixture thereof; and an impregnation layer, comprising at least one second catalyst; wherein the at least one second catalyst includes a perovskite structured compound of the general formula La1-xAgxMnO3 wherein x is from 0 to 1; wherein the at least one second catalyst comprises about 1% to about 10% by weight silver, about 10% to about 40% by weight lanthanum, and about 10% to about 30% by weight manganese. - View Dependent Claims (4, 5, 6)
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Specification