Yttrium-doped catalyst support
AssigneeBASF Mobile Emissions Catalysts LLC
InventorsShiang Sung, Markus Koegel, Sven Jare Lohmeier
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Abstract
Disclosed herein are oxidation catalyst compositions comprising a first platinum group metal (PGM) component, a manganese (Mn) component, a first refractory metal oxide support material, and a metal component comprising yttrium, lanthanum, tin, magnesium, cerium, titanium, or a combination of any of the foregoing, wherein each of the first PGM component, the Mn component, and the metal component are supported on the first refractory metal oxide support material; catalyst articles coated with at least one such catalyst composition; and emission treatment systems including at least one such catalyst article.
Claims31
An oxidation catalyst composition comprising:
- a first platinum group metal (PGM) component;
- a manganese (Mn) component;
- a first refractory metal oxide support material;
- and
- a metal component comprising yttrium, lanthanum, tin, magnesium, cerium, titanium, or a combination thereof,
- wherein the first PGM component, the manganese component, and the metal component are supported on the first refractory metal oxide support material;
- wherein the first PGM component is platinum or a combination of platinum and palladium;
- wherein a molar ratio of yttrium to manganese is from about 0.1 to about 10.
An oxidation catalyst composition comprising:
- a first platinum group metal (PGM) component;
- a manganese (Mn) component;
- a first refractory metal oxide support material;
- and
- a metal component comprising yttrium or an oxide thereof,
- wherein the first PGM component, the manganese component, and the metal component are supported on the first refractory metal oxide support material,
- wherein the yttrium is present in an amount by weight ranging from about 0.5% to about 10%, based on the total weight of the composition and calculated as the oxide.
Dependencies are inferred from the claim text.