Method and compound for the selective adsorption of nitrogen oxides
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United States of America Patent
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Apr 30, 2002
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N/A
app pub date -
Apr 17, 2000
filing date -
Jul 23, 1997
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Expired
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Abstract
A method for selectively absorbing nitrogen oxides NO.sub.x from gaseaous mixtures containing carbon dioxide or carbon dioxide and water and optionally contaminants chosen among CO, SO.sub.2, hydrocarbons and mixtures thereof, comprising placing the gaseous mixtures in contact with absorber compounds having formula Ba.sub.2 Cu.sub.3 O.sub.5+d, where d is a number from 0.6 to 1. New compounds having the above formula are characterized by high resistance to carbonatation and by specific Raman spectra.
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