Process for removing nitrogen oxides from oxygen rich exhaust ga

Details Process for removing nitrogen oxides from oxygen rich exhaust ga Process for removing nitrogen oxides from oxygen rich exhaust ga

1993-12-22

1995-06-27

Lewis, Michael

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Nitrogen or nitrogenous component

4232135, C01B 2104

Patent

active

054277531

ABSTRACT:
Nitrogen oxides are removed from an oxygen rich exhaust gas containing nitrogen oxides and hydrocarbons by bringing the oxygen rich exhaust gas into contact with a catalyst composed of phosphorus and at least one active metal contained in a zeolite having a molar ratio of SiO.sub.2 /Al.sub.2 O.sub.3 of at least 15.

REFERENCES:
patent: 4867954 (1989-09-01), Staniulis et al.
patent: 5039644 (1991-08-01), Lachman et al.
patent: 5041270 (1991-08-01), Fujitani et al.
patent: 5227145 (1993-07-01), Kintaichi et al.

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