NOx reduction catalyst and NOx reduction system

Details NOx reduction catalyst and NOx reduction system NOx reduction catalyst and NOx reduction system

2005-03-15

2005-03-15

Johnson, Christina (Department: 1725)

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Nitrogen or nitrogenous component

C423S213500, C423S244100, C502S304000, C502S325000, C502S328000, C502S330000, C502S339000, C502S340000, C502S344000, C502S349000

Reexamination Certificate

active

06866834

ABSTRACT:
A NOx reduction catalyst for exhaust gas discharged from an automotive internal combustion engine operable in a lean region and in a range including a stoichiometric region and a rich region. The NOx reduction catalyst comprises a catalytic noble metal. Additionally, an oxygen adsorbable and releasable material is provided carrying at least a part of the catalytic noble metal. In this catalyst, the catalytic noble metal carried on the oxygen adsorbable and releasable material adsorbs SOx in the exhaust gas, in a form of at least one of sulfate and sulfite.

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