Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Mixture is exhaust from internal-combustion engine
Patent
1991-03-12
1993-03-09
Lewis, Michael
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
Mixture is exhaust from internal-combustion engine
423247, 423239, C01B 2102
Patent
active
051925150
ABSTRACT:
A method is described for promoting a reaction between nitrogen oxide and carbon monoxide which comprises conducting the reaction in the presence of a dysprosium-containing catalyst which is free of noble metals and metals of the first transition series. More particularly, a method is described for reducing the nitrogen oxide and carbon monoxide content of effluent gas streams derived from the combustion of fossil fuels by contacting the effluent gases with a catalyst comprising dysprosium which is free of metals capable of promoting the oxidation of carbon monoxide. Generally, the catalyst is contacted with the effluent gases at temperatures of from about 300.degree. F. to about 1200.degree. F.
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Gardner-Chavis Ralph A.
May Michael P.
Hendrickson Stuart L.
Lewis Michael
Molecular Technology Corporation
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