Catalyst for the reduction of oxides of nitrogen
Patent 4735930 Issued on April 5, 1988. Estimated Expiration Date: 
February 18, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
February 18, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3345135 3346328 3615166 3895094 Catalytic process for reducing nitrogen oxides to nitrogen Reduction of nitrogen oxides with catalytic acid resistant aluminosilicate molecular sieves and ammonia Process for reducing nitric oxides Pollution control catalyst Patent #: 4663300 InventorsAssigneeApplicationNo. 06/829884 filed on 02/18/1986US Classes:502/78, Mordenite type423/239.1, Utilizing solid sorbent, catalyst, or reactant502/67Mixed zeolitesExaminersPrimary: Dees, Carl F.Attorney, Agent or FirmInternational ClassesB01D 53/86 (20060101)B01J 29/06 (20060101) B01J 29/00 (20060101) AbstractA catalyst for the selective reduction of nitrogen oxides to nitrogen in the presence of ammonia in the form of composite bodies formed from a mixture of zirconia (5 to 50% by weight), a zeolite (50 to 90%), a bond material (0 to 30%), and, optionally, a promoter selected from oxides of vanadium and copper in the amount of at least 0.1% by weight. |
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