Abstract
The adsorption selectivities of a series of organic compounds from solutions on hyper-cross-linked polystyrene networks (HPNs) with ultimate degrees of cross linking were studied by high performance liquid chromatography (HPLC). The thermodynamic characteristics of adsorption (TCA) of substances under study from water–organic solutions on such HPNs in the Henry region were determined. The TCAs of organic compounds on the HPNs under study as a function of their molecular structures are discussed. It was established that the magnitude of the Gibbs energy change upon adsorption increases with increasing the number of π-electrons in the adsorbed molecules in a series of both aromatic hydrocarbons and their sulfurcontaining heterocyclic analogs. As an example, a model mixture of organic compounds was separated on HPNs by HPLC. It was shown that middle and heavy oil fractions can be fractionated on HPNs into the groups of mono-, di-, and tricyclic aromatic compounds.
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Original Russian Text © B.R. Saifutdinov, V.A. Davankov, M.M. Il’in, M.P. Tsyurupa, Z.K. Blinnikova, 2015, published in Fizikokhimiya Poverkhnosti i Zashchita Materialov, 2015, Vol. 51, No. 6, pp. 601–608.
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Saifutdinov, B.R., Davankov, V.A., Il’in, M.M. et al. Selective adsorption of organic compounds from solutions on hyper-cross-linked polystyrenes with ultimate degrees of cross linking. Prot Met Phys Chem Surf 51, 957–963 (2015). https://doi.org/10.1134/S2070205115060209
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DOI: https://doi.org/10.1134/S2070205115060209