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Thermodynamics of the adsorption of organic molecules on graphitized carbon black modified with a monolayer of 5-hydroxy-6-methyluracil

  • Physical Chemistry of Surface Phenomena
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Abstract

Thermodynamic characteristics of the adsorption of alkanes, alcohols, arenes, and esters on graphitized carbon black with a deposited monolayer (0.17%) of 5-hydroxy-6-methyluracil are studied by means of inverse gas chromatography at infinite dilution. It is established that size effects (violation of the additivity of molar changes in internal energy and the entropy of adsorption for pairs of molecules of one homologous series that differ by one methyl group) are observed when organic molecules are adsorbed on the surface of the resulting adsorbent. The size effects are similar to those observed when 1% 5-hydroxy-6-methyluracil is deposited on graphitized carbon black. It is concluded that the observed violation of additivity is associated with cavities in the supramolecular structure.

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Authors and Affiliations

  1. Bashkir State University, Ufa, 450076, Russia

    V. Yu. Gus’kov, Yu. F. Shaikhitdinova & F. Kh. Kudasheva

  2. Ufa Institute of Chemistry, Russian Academy of Sciences, Ufa, 450054, Russia

    S. P. Ivanov

Authors
  1. V. Yu. Gus’kov
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  2. S. P. Ivanov
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  3. Yu. F. Shaikhitdinova
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  4. F. Kh. Kudasheva
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Correspondence to V. Yu. Gus’kov.

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Original Russian Text © V.Yu. Gus’kov, S.P. Ivanov, Yu.F. Shaikhitdinova, F.Kh. Kudasheva, 2016, published in Zhurnal Fizicheskoi Khimii, 2016, Vol. 90, No. 10, pp. 1517–1522.

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Gus’kov, V.Y., Ivanov, S.P., Shaikhitdinova, Y.F. et al. Thermodynamics of the adsorption of organic molecules on graphitized carbon black modified with a monolayer of 5-hydroxy-6-methyluracil. Russ. J. Phys. Chem. 90, 2006–2010 (2016). https://doi.org/10.1134/S0036024416100149

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  • DOI: https://doi.org/10.1134/S0036024416100149

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