Composite adsorbents for air purification
AssigneeUop LLC
InventorsVladislav I. Kanazirev, Donald G. Latus
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Abstract
Applicant has developed an improved adsorbent useful in removing contaminants from various air streams. The adsorbent contains a zeolite, an alumina and a metal component. The metal component is present in an amount at least 10 mol-% of the stoichiometric amount of metal (expressed as the oxide) needed to balance the negative charge of the zeolite lattice. In a specific application an adsorbent comprising zeolite X, alumina and sodium is used to purify an air stream in order to remove water, carbon dioxide and other impurities including hydrocarbons.
Claims10
A process for removing contaminants from air streams comprising contacting the stream with a solid shaped adsorbent, at adsorption conditions to remove at least a portion of at least one contaminant, the adsorbent comprising an alumina component, a zeolite component and a metal component, the metal component present in an amount at least 10 mol-% of the stoichiometric amount of metal needed to compensate for the negative lattice expressed as the oxide charge of the zeolite, wherein said adsorbent has been activated by heating at a temperature of from about 275° to about 600° C. for a time of about 5 to about 70 minutes.
Dependencies are inferred from the claim text.