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US 12,643,068 B2Granted
Adsorbent material for removing nitrogen oxides from indoor or cabin air
AssigneeBASF SE
InventorsDavid S. Weinberger, Howard J. Furbeck
Life of this patent
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Abstract
Disclosed in certain embodiments are systems for removing pollutants, such as nitrogen oxides, from an interior air flow, which may include an adsorbent material that includes a zeolite and a basic metal oxide.
Claims17
A filter device adapted for removal and retention of NO2 from interior air at temperatures below 100° C., the filter device comprising:
- a substrate;
- and
- an adsorbent material coated onto the substrate, the adsorbent material comprising a zeolite and a basic metal oxide comprising a copper oxide, wherein the basic metal oxide is present at a loading of about 5 wt. % to about 20 wt. % based on the total weight of the adsorbent material.
A method for removal and retention of NO2 from an interior air flow comprising a recirculated air supply, the method comprising:
- contacting the interior air flow with an adsorbent material adapted to reduce the NO2 concentration of the recirculated air supply, the adsorbent material comprising a zeolite and a basic metal oxide comprising a copper oxide, wherein the basic metal oxide is present at a loading of about 5 wt. % to about 20 wt. % based on the total weight of the adsorbent material.
An air purification system for removal and retention of NO2 from interior air, the air purification system comprising:
- a substrate;
- and
- an adsorbent material coated onto the substrate, the adsorbent material comprising a beta zeolite impregnated with a basic metal oxide comprising a copper oxide, wherein the basic metal oxide is present at a loading of about 5 wt. % to about 20 wt. % based on the total weight of the adsorbent material.
Dependencies are inferred from the claim text.