Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Metal – metal oxide or metal hydroxide
Patent
1995-06-27
1998-10-20
Simmons, David A.
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Metal, metal oxide or metal hydroxide
502312, 502347, 502330, 502339, 502311, 502313, 502353, B10J 2300
Patent
active
058246215
ABSTRACT:
An exhaust gas cleaner being constituted by a first catalyst of a first porous inorganic oxide supporting a silver component in combination with a W component and a second catalyst of a second porous inorganic oxide supporting a Pt component and optionally a W component. The Ag component may include Ag and compounds thereof, the Pt component may include Pt, Pd, Ru, Rh, Ir, and Au, and the W component may include W, V, Mn, Mo, Nb, and Ta. The W component effectively catalyzes the reduction of nitrogen oxides by ammonia to enhance the removal efficiency of the exhaust gas cleaner.
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Abe Akira
Irite Naoko
Muramatsu Gyo
Saito Mika
Sumiya Satoshi
Gray Linda L.
Kabushiki Kaisha Riken
Simmons David A.
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