Exhaust gas cleaner and method for cleaning exhaust gas

Details Exhaust gas cleaner and method for cleaning exhaust gas Exhaust gas cleaner and method for cleaning exhaust gas

1995-06-06

1998-04-21

Thornton, Krisanne

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Nitrogen or nitrogenous component

422171, 422172, 422177, 4232132, 4232135, 4232392, 502330, 502347, B01J 800, C01B 2100

Patent

active

057414688

ABSTRACT:
An exhaust gas cleaner is constituted by a first catalyst carrying an Ag component, a second catalyst carrying an Ni component or two or more of an Ni component, Ag component and Cu component, and optionally a third catalyst carrying a noble metal component alone or in combination with a base metal component. The second and third catalysts may be physically mixed to form a mixed catalyst. Another exhaust gas cleaner is constituted by a mixed catalyst of a first catalyst carrying an Ag component and a second catalyst carrying an Ni component alone or in combination with a Cu component, and a third catalyst carrying a noble metal component alone or in combination with a base metal component. Still another exhaust gas cleaner is constituted by a first catalyst carrying an Ag component, a second catalyst which is a mixture of an Ni catalyst, Ag catalyst and Cu catalyst, and optionally a third catalyst carrying a noble metal component alone or in combination with a base metal component. The second and third catalyst may be physically mixed to form a mixed catalyst.

REFERENCES:
patent: 3857921 (1974-12-01), Tamura et al.
patent: 3953576 (1976-04-01), Meguerian et al.
patent: 4621071 (1986-11-01), Blanchard et al.
patent: 5354544 (1994-10-01), Logan et al.

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