Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Nitrogen or nitrogenous component
Patent
1992-11-23
1995-04-25
Langel, Wayne
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
Nitrogen or nitrogenous component
502305, 502309, 502312, 502313, 502326, 502350, 502353, B01J 800, B01J 2104
Patent
active
054096812
ABSTRACT:
A catalyst for purifying an exhaust gas includes a first component having activity for reducing nitrogen oxides with ammonia and a second component having at least one of activity for forming nitrogen oxide from ammonia and activity for forming carbon dioxide from carbon monoxide. The first component is a composition containing an oxide of at least one member selected from titanium, vanadium, tungsten and molybdenum and the second component is a composition containing a salt of a noble metal selected from platinum, palladium and rhodium or any one of these noble metals supported on a porous material selected from zeolites, alumina and silica. The invention further provides a method for purifying an exhaust gas containing NOx, CO and leak NH.sub.3 using the catalyst.
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Hamada Ikuhisa
Kato Yasuyoshi
Konishi Kunihiko
Morita Isato
Nakajima Fumito
Babcock-Hitachi Kabushiki Kaisha
Dunn Jr. Thomas G.
Langel Wayne
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