Thermodynamics of the adsorption of organic molecules on graphitized carbon black modified with a monolayer of 5-hydroxy-6-methyluracil
- Authors: Gus’kov V.Y.1, Ivanov S.P.2, Shaikhitdinova Y.F.1, Kudasheva F.K.1
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Affiliations:
- Bashkir State University
- Ufa Institute of Chemistry
- Issue: Vol 90, No 10 (2016)
- Pages: 2006-2010
- Section: Physical Chemistry of Surface Phenomena
- URL: https://bakhtiniada.ru/0036-0244/article/view/168850
- DOI: https://doi.org/10.1134/S0036024416100149
- ID: 168850
Cite item
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.
About the authors
V. Yu. Gus’kov
Bashkir State University
Author for correspondence.
Email: guscov@mail.ru
Russian Federation, Ufa, 450076
S. P. Ivanov
Ufa Institute of Chemistry
Email: guscov@mail.ru
Russian Federation, Ufa, 450054
Yu. F. Shaikhitdinova
Bashkir State University
Email: guscov@mail.ru
Russian Federation, Ufa, 450076
F. Kh. Kudasheva
Bashkir State University
Email: guscov@mail.ru
Russian Federation, Ufa, 450076
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