High entropy rare earth oxides for emissions control
AssigneeFord Global Technologies, LLC
InventorsAndrew Getsoian, Jason Wu
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Abstract
Methods and systems are provided for an emissions aftertreatment device. In one example, the emissions aftertreatment device may include a catalyst and a high entropy oxygen storage material formed of at least five metal oxides in equal molar proportions. The at least five metal oxides includes one or more rare earth metals as well as other metals with similar chemical properties as the rare earth metals.
Claims20
An emissions aftertreatment device, comprising:
- a catalyst;
- a high entropy oxygen storage material formed of at least five metal oxides in equal molar ratios, the at least five metal oxides including one or more rare earth metals.
An oxygen storage material for an emissions aftertreatment device, comprising:
- a single phase ceramic material formed of at least five metal oxides in equal molar proportions, the single phase ceramic material including one or more of cerium, praseodymium, and terbium.
A three-way catalytic converter for a vehicle, comprising:
- a washcoat supported on a substrate, the washcoat including;
- at least one catalyst;
- and
- a high entropy oxygen storage material formed of a single phase of equal molar amounts of at least five metal oxides, the at least five metal oxides including rare earth metals and metals demonstrating structural compatibility with oxides of cerium, praseodymium, and terbium.
The three-way catalytic converter of claiml6, wherein the washcoat further includes alumina and/or ceria-zirconia.
Dependencies are inferred from the claim text.