Process for removing nitrogen oxides in exhaust gases to nitroge

Details Process for removing nitrogen oxides in exhaust gases to nitroge Process for removing nitrogen oxides in exhaust gases to nitroge

1992-10-27

1994-08-09

Langel, Wayne

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Nitrogen or nitrogenous component

423212, 4232137, B01D 5336

Patent

active

053364767

ABSTRACT:
A process for reducing nitrogen oxides to nitrogen from exhaust gases is disclosed, which involves bringing an exhaust gas containing nitrogen oxides into contact with at least one catalyst from proton-type zeolites, zeolites of an alkali metal exchanged form and acidic metal oxides, by reaction with a hydrocarbon or an oxygen-containing organic compound in an oxidizing atmosphere containing excess oxygen. A process which further involves bringing the exhaust gas into contact with an oxidizing catalyst subsequent to the above process.

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