NO.sub.x abatement process
AssigneeMobil Oil Corporation
InventorsJohn P. McWilliams, David S. Shihabi, Richard F. Socha, Hye K. C. Timken
Life of this patent
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Abstract
A process for converting noxious nitrogen oxides present in oxygen-containing gaseous effluents to N.sub.2 and H.sub.2 O comprising reacting the gaseous effluent with an effective amount of ammonia in the presence of a catalyst having a Constraint Index of up to about 12, said catalyst having a Constraint Index of up to about 12, said catalyst being composited with a binder containing at least one selected from the group consisting of titania, zirconia, and silica.
Claims10
A process for converting noxious nitrogen oxides present in oxygen-containing gaseous effluents to N.sub.2 and H.sub.2 O comprising reacting the gaseous effluent with an amount of ammonia effective to reduce said noxious nitrogen oxides to nitrogen in the presence of a zeolite catalyst having a Constraint Index of up to about 12, said catalyst being composited with a titania binder by the steps of:
- (a) providing a substantially homogenous mixture of molecular sieve material, a low acidity titanium oxide, titanium oxide hydrate and sufficient water to provide an extrudable mass;
- (b) extruding the extrudable mass resulting from step (a);
- and
- (c) calcining the extrudate resulting from step (b).
Dependencies are inferred from the claim text.