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US 5,690,900 AGranted
Ammonia oxidation catalyst
OwnerRadmil Smojverinventor
Life of this patent
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Abstract
A catalyst composition for oxidation of ammonia in the production of nitric acid incorporates a porous ceramic structure which is at least partially coated, the coating including a layer containing alumina, zirconium and cerium, a layer containing cobalt, cerous zirconium and optionally manganese, and a layer containing platinum.
Claims3
A method of manufacturing nitric acid comprising:
- providing a catalyst composition which includes a porous ceramic structure having a coating, the coating including at least one washcoat layer which includes alumina, zirconium and cerium, at least one layer which includes cobalt, cerium, zirconium and optionally manganese, and at least one layer which includes platinum;
- contacting the catalyst composition with ammonia and oxygen and heating so as to form;
- NO/NO.sub.2 ;
- and
- converting the NO/NO.sub.2 into nitric acid.
2 more elements
Dependencies are inferred from the claim text.