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https://doi.org/10.37358/Rev.Chim.1949

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Revista de Chimie (Rev. Chim.), Year 2010, Volume 61, Issue 9,





GIGI DRAGAN
The Individual Adsorption of Carbon Dioxide
and Sulphur Dioxide by Y Zeolites

Abstract:

The sulphur dioxide and carbon dioxide individual adsorption capacities of the Y zeolites, whose structure was confirmed by XRD, were determined at temperatures from 25 to 200oC and concentrations in the feeding gas from 0.92% - 5.04% for SO2 and 2.95% - 11.43% for CO2 (% vol.). The effect of the adsorption - desorption - thermal regeneration cycles on the adsorption capacity of the Y zeolites was determined too. The presence of water vapors increases the adsorption capacity for SO2 at high temperatures. Y zeolites, good adsorbents for sulphur dioxide found in residual gases, also have a great carbon dioxide adsorption capacity even at a temperature of 190oCelsius, or when being confronted with low concentrations, 2.95%, proving a very balanced stability at cycles of adsorption - desorption - regeneration. The mechanisms proposed for the adsorption of sulphur dioxide and carbon dioxide by the Y zeolites are supported by the IR spectra. Keywords: Y zeolites, sulphur dioxide, carbon dioxide, adsorption, mechanism of adsorption


Issue: 2010, Volume 61, Issue 9
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