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AssigneeCatalytic Solutions, Inc.
InventorStephen J. Golden
Estimating the term…
Perovskite-type catalyst consists essentially of a metal oxide composition and methods of using them are provided. The metal oxide composition is represented by the general formula Aa−xBxMOb, in which A is a mixture of elements originally in the form of single phase mixed lanthanides collected from bastnasite; B is a divalent or monovalent cation; M is at least one element selected from the group consisting of elements of an atomic number of from 23 to 30, 40 to 51, and 73 to 80; a is 1 or 2; b is 3 when a is 1 or b is 4 when a is 2; and x is a number defined by 0≦x<0.5. Methods of making and using the perovskite-type catalysts are also provided. The perovskite-type catalyst may be used to reduce nitrogen oxides, oxidize carbon monoxide, and oxidize hydrocarbons in an exhaust stream from a motor vehicle. Methods of such a use are provided.
A method of reducing nitrogen oxides, oxidizing carbon monoxide, and oxidizing hydrocarbons in an exhaust stream from a motor vehicle, said method comprising:contacting the exhaust stream with a perovskite-type catalyst consisting essentially of a metal oxide composition represented by the general formula:
A method of purifying industrial process emissions containing hydrocarbons, carbon monoxide, and nitrogen oxides, the method comprising:contacting said emissions with a perovskite-type catalyst, thereby purifying said emissions, said perovskite-type catalyst consisting essentially of a metal oxide composition represented by the general formula:
Dependencies are inferred from the claim text.