Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Mixture is exhaust from internal-combustion engine
Patent
1996-07-03
1998-08-18
Tran, Hien
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
Mixture is exhaust from internal-combustion engine
4232135, 4232391, 422171, 422177, 502244, 502345, 502330, 502331, B01J 800
Patent
active
057955530
ABSTRACT:
A material effective for adsorbing NO.sub.x from an exhaust stream of a combustion process, such as from an internal combustion engine operating under lean burn conditions, is disclosed. The material comprises an alkali metal-doped and copper-doped hydrous metal oxide material that has been calcined. The alkali metal is selected from potassium and sodium. The material is coated onto a substrate, such as ceramic beads or pellets, or a honeycomb cordierite monolith, and placed in contact with the exhaust stream.
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Gardner Timothy J.
Lott Stephen E.
Matlock Charlene A.
McLaughlin Linda I.
Oelfke John B.
Low Emmissions Technologies Research and Development Partnership
Tran Hien
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