ZPGM Diesel Oxidation Catalysts and methods of making and using same
First Claim
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1. A zero platinum group metal (ZPGM) catalyst system, comprising:
- a substrate; and
a washcoat suitable for deposition on the substrate, comprising at least one carrier metal oxide, and at least one ZPGM catalyst; and
wherein at least one of the ZPGM catalyst comprises at least one perovskite structured compound having the formula ABO3, wherein each of A and B is selected from the group consisting of at least one of yttrium, silver, manganese, and combinations thereof;
wherein yttrium is present in about 1% to about 5% by weight of the at least one ZPGM catalyst, silver is present in about 1% to about 5% by weight of the at least one ZPGM catalyst, and wherein manganese is present in about 1% to about 5% by weight of the at least one ZPGM catalyst.
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Abstract
Diesel oxidation ZPGM catalyst systems are disclosed. ZPGM catalyst systems may oxidize toxic gases, such as carbon monoxide, hydrocarbons and nitrogen oxides that may be included in exhaust gases. ZPGM catalyst systems may include: a substrate, a washcoat, and an impregnation layer. The washcoat may include at least one carrier material oxides. The impregnation layer may include at least one ZPGM catalyst, carrier material oxides and OSMs. Suitable known in the art chemical techniques, deposition methods and treatment systems may be employed in order to form the disclosed ZPGM catalyst systems.
278 Citations
16 Claims
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1. A zero platinum group metal (ZPGM) catalyst system, comprising:
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a substrate; and a washcoat suitable for deposition on the substrate, comprising at least one carrier metal oxide, and at least one ZPGM catalyst; and wherein at least one of the ZPGM catalyst comprises at least one perovskite structured compound having the formula ABO3, wherein each of A and B is selected from the group consisting of at least one of yttrium, silver, manganese, and combinations thereof; wherein yttrium is present in about 1% to about 5% by weight of the at least one ZPGM catalyst, silver is present in about 1% to about 5% by weight of the at least one ZPGM catalyst, and wherein manganese is present in about 1% to about 5% by weight of the at least one ZPGM catalyst. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An apparatus for reducing emissions from an engine having associated therewith an exhaust system, comprising:
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a substrate; a washcoat suitable for deposition on the substrate, comprising at least one oxide solid further comprising at least one carrier metal oxide; and at least one impregnation layer, wherein the impregnation layer includes at least one ZPGM catalyst; wherein the at least one ZPGM catalyst comprises at least one perovskite structured compound having the formula ABO3, wherein each of A and B is selected from the group consisting at least one of yttrium, silver, manganese, and combinations thereof; wherein yttrium is present in about 1% to about 5% by weight of the at least one ZPGM catalyst, silver is present in about 1% to about 5% by weight of the at least one ZPGM catalyst, and wherein manganese is present in about 1% to about 5% by weight of the at least one ZPGM catalyst. - View Dependent Claims (12, 13, 14, 15)
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16. A zero platinum group metal (ZPGM) catalyst system, comprising:
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a substrate; an overcoat suitable for deposition on the substrate, comprising at least one overcoat oxide solid selected from the group consisting at least one of a carrier metal oxide, and a ZPGM catalyst; and a washcoat suitable for deposition on the substrate, comprising at least one oxide solid selected from the group consisting of at least one carrier metal oxide, and at least one ZPGM catalyst; and wherein at least one of the ZPGM catalyst comprises at least one perovskite structured compound having the formula ABO3, wherein each of A and B is selected from the group consisting at least one of yttrium, silver, manganese, and combinations thereof; wherein at least one of the washcoat and overcoat comprises a carrier metal oxide and the at least one ZPGM catalyst, and wherein the yttrium is present in about 1% to about 5% by weight of the at least one ZPGM catalyst, silver is present in about 1% to about 5% by weight of the at least one ZPGM catalyst, and wherein manganese is present in about 1% to about 5% by weight of the at least one ZPGM catalyst.
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Specification