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US 12,427,477 B2Granted
High entropy rare earth oxides for emissions control
AssigneeFord Global Technologies, LLC
InventorsAndrew Getsoian, Jason Wu
Life of this patent
Estimating the term…
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.
Claims17
An emissions aftertreatment device, comprising:
- a catalyst, wherein the catalyst is a three-way catalyst configured to chemically interact CO, NOx, and hydrocarbons (HC) in exhaust gas;
- a high entropy oxygen storage material in addition to the catalyst, wherein the high entropy oxygen storage material is formed of metal oxides including a 1:1:1:1:1:1 molar ratio of La, Ce, Pr, Nd, Tb, and Yb.
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 is an oxide comprising a 1:1:1:1:1:1 molar ratio of La, Ce, Pr, Nd, Tb, and Yb.
A three-way catalytic converter for a vehicle, comprising:
- a washcoat supported on a substrate, the washcoat including:
- a first zone and a second zone, wherein exhaust gas flows through the first zone before flowing through the second zone, wherein a composition of the first zone and the second zone is different, and wherein the first zone and/or the second zone include:
- at least one catalyst;
- and
- a high entropy oxygen storage material formed of a single phase of equal molar amounts of metal oxides, the metal oxides including a 1:1:1:1:1:1 molar ratio of La, Ce, Pr, Nd, Tb, and Yb.
2 more elements
Dependencies are inferred from the claim text.