Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Mixture is exhaust from internal-combustion engine
Patent
1992-11-25
1995-09-19
Langel, Wayne
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
Mixture is exhaust from internal-combustion engine
4232132, 4232392, B01D 5356, B01D 5362, B01D 5372
Patent
active
054513855
ABSTRACT:
Nitrogen oxides and carbon monoxide are removed from the exhaust of an internal combustion engine which operates on a methane-containing fuel by reacting the carbon monoxide, nitrogen oxides, and oxygen in the exhaust gas with methane in the presence of a catalyst comprising a crystalline zeolite having a silicon to aluminum ratio of equal to or greater than about 2.5 which is exchanged with a cation selected from the group consisting of cobalt, nickel, iron, chromium, rhodium, gallium, and manganese. Methane for the reaction is provided as a portion of the methane-containing fuel.
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Armor John N.
Hansel James G.
Li Yuejin
Raman S. Venkat
Stolz Jack L.
Air Products and Chemicals Inc.
DiMauro Peter
Fernbacher John M.
Langel Wayne
Marsh William F.
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