Catalyst composition for use in a lean NO x trap and method...

Details Catalyst composition for use in a lean NO x trap and method... Catalyst composition for use in a lean NO x trap and method...

2005-06-20

2009-11-24

Vanoy, Timothy C (Department: 1793)

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Mixture is exhaust from internal-combustion engine

C423S213500, C423S239100, C423S245300, C423S247000, C502S325000, C502S328000, C502S340000, C060S274000, C060S282000, C060S299000, C060S302000

Reexamination Certificate

active

07622095

ABSTRACT:
A lean NOxtrap composition. The lean NOxtrap composition utilizes ruthenium in place of higher cost metals such as platinum. The lean NOxtrap composition provides high NOxstorage efficiency and high NOxconversion efficiency when incorporated in a lean NOxtrap. A method of removing harmful gases using the lean NOxtrap composition is also described.

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