Process and catalyst system for NOx reduction

Details Process and catalyst system for NOx reduction Process and catalyst system for NOx reduction

2009-08-31

2010-12-14

Vanoy, Timothy C (Department: 1793)

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Mixture is exhaust from internal-combustion engine

C423S239100, C422S177000, C422S180000, C060S299000

Reexamination Certificate

active

07850935

ABSTRACT:
Process for reducing nitrogen oxides to nitrogen in an exhaust gas comprising passing the exhaust gas in the presence of an oxygen-containing organic reducing agent through a catalyst system comprising at least two catalyst beds, in which a first catalyst bed comprises only alumina and a second catalyst bed downstream comprises only indium supported on alumina.

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K. Eranen et al., Continuous reduction of NO with octane over a silver/alumina catalyst in oxygen-rich exhaust gases: combined heterogeneous and surface-mediated homogeneous reactions,Journal of Catalysis, vol. 219, No. 1, Oct. 1, 2003, abstract.

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