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Issue 13, 1995
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Adsorption of carbon dioxide, sulfur dioxide and water vapour by MCM-41, a model mesoporous adsorbent

Abstract

Adsorption isotherms of carbon dioxide, sulfur dioxide and water vapour have been determined on a well characterized sample of MCM-41. The shape of the carbon dioxide isotherm (at 195 K) is similar to that given by mesoporous hydroxylated silica, whereas the water isotherm (at 303 K) is of Type V in the IUPAC classification and its shape is therefore indicative of a more hydrophobic behaviour. Isosteric enthalpies of adsorption, calculated from the sulfur dioxide isotherms (at 254 and 273 K), reveal strong energetic heterogeneity in the adsorbent-adsorbate interactions and it appears that the high-energy sites occupy ca. 30% of the total surface area.

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Article type: Paper
DOI: 10.1039/FT9959102041
J. Chem. Soc., Faraday Trans., 1995,91, 2041-2043

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    Adsorption of carbon dioxide, sulfur dioxide and water vapour by MCM-41, a model mesoporous adsorbent

    P. J. Branton, P. G. Hall, M. Treguer and K. S. W. Sing, J. Chem. Soc., Faraday Trans., 1995, 91, 2041
    DOI: 10.1039/FT9959102041

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