Process and catalyst system for SCR of NO x

Details Process and catalyst system for SCR of NO x Process and catalyst system for SCR of NO x

2010-09-14

2011-11-22

Vanoy, Timothy (Department: 1734)

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Mixture is exhaust from internal-combustion engine

C423S239100, C423S239200, C422S177000, C422S180000, C060S301000

Reexamination Certificate

active

08062617

ABSTRACT:
Process for reducing nitrogen oxides to nitrogen in an exhaust gas comprising passing the exhaust gas in the presence of a reducing agent through a catalyst system comprising at least two catalyst beds, in which a first catalyst bed is an iron-beta-zeolite and a second catalyst bed downstream is silver supported on alumina.

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patent: 2011/0070134 (2011-03-01), Stakhev et al.
patent: 1 495 804 (2005-01-01), None
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