Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Nitrogen or nitrogenous component
Patent
1987-02-06
1988-10-18
Heller, Gregory A.
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
Nitrogen or nitrogenous component
423235, 208113, 208120, B01J 800, C01B 2100
Patent
active
047786655
ABSTRACT:
Abatement of nitrogen oxides in an industrial exhaust gas is effected by reduction of the nitrogen oxides with ammonia in the presence of a catalyst comprising a porous crystalline siliceous solid such as a ZSM-5 type zeolite. Fast responses to changes of NO.sub.x load is achieved with a zeolite of low to moderate acid activity. The catalyst may be virgin catalyst, aged catalyst previously used for the conversion of a hydrocarbon or an organic compound, or artifically aged catalyst.
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Kiliany, Jr. Thomas R.
Krishnamurthy Sowmithri
McWilliams John P.
Pappal David A.
Sigal Catherine T.
Gilman Michael G.
Heller Gregory A.
McKillop Alexander J.
Mobil Oil Corporation
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