Advanced catalysts for automotive applications
AssigneeSDCmaterials, Inc.
InventorsQinghua Yin, Xiwang Qi, Maximilian A. Biberger
Life of this patent
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Abstract
Embodiments of present inventions are directed to an advanced catalyst. The advanced catalyst includes a honeycomb structure with an at least one nano-particle on the honeycomb structure. The advanced catalyst used in diesel engines is a two-way catalyst. The advanced catalyst used in gas engines is a three-way catalyst. In both the two-way catalyst and the three-way catalyst, the at least one nano-particle includes nano-active material and nano-support. The nano-support is typically alumina. In the two-way catalyst, the nano-active material is platinum. In the three-way catalyst, the nano-active material is platinum, palladium, rhodium, or an alloy. The alloy is of platinum, palladium, and rhodium.
Claims31
A catalytic converter comprising:
- a honeycomb structure;
- and
- a washcoat layer on the honeycomb structure comprising nano-particles and micron sized oxide particles, wherein the nano-particles are plasma-generated;
- wherein the nano-particles consist of a single nano-active material component and a single nano-support component.
A cordierite substrate in a catalytic converter comprising:
- a. a first type of plasma-generated nano-particles consisting of a single first nano-active material component and a single first nano-support component;
- and
- b. a second type of plasma-generated nano-particles consisting of a single second nano-active material component and a single second nano-support component.
A catalytic converter comprising:
- a honeycomb structure;
- oxidation nano-particles on the honeycomb structure, wherein the oxidation nano-particles comprise particles having a single oxidation nano-active material component and a single nano-support component;
- and
- reduction nano-particles on the honeycomb structure, wherein the reduction nano-particles comprise particles having a single reduction nano-active material and a single nano-support component;
- wherein the oxidation nano-particles and reduction nano-particles are plasma-generated.
Dependencies are inferred from the claim text.