Reduction of NO.sub.x in the exhaust gases from internal combust

Details Reduction of NO.sub.x in the exhaust gases from internal combust Reduction of NO.sub.x in the exhaust gases from internal combust

1992-12-14

1999-04-13

McGinty, Douglas J.

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Metal, metal oxide or metal hydroxide

502326, 502332, 502328, 502439, 502527, 4232135, 422169, 422170, 422171, B01J 3500, B01J 2356

Patent

active

058940685

ABSTRACT:
Removal of carbon monoxide, hydrocarbons, and nitrogen oxides from the exhaust gas from lean-burn, diesel and other engines which produce exhaust gases containing excess oxygen is provided by at least two catalysts in sequence, each capable of reducing nitrogen oxides within a particular range of engine operating temperatures. Oxidation of the remaining reducing gases is also accomplished.

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patent: 5471836 (1995-12-01), Takeshima et al.
patent: 5487268 (1996-01-01), Itoh et al.
patent: 5531972 (1996-07-01), Rudy

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