Sorption of organic molecules on surfaces of a microporous polymer adsorbent modified with different quantities of uracil
| Autor: | F. Kh. Kudasheva, V. Yu. Gus’kov, Alina G. Ganieva |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Intermolecular force
Supramolecular chemistry Uracil Sorption 02 engineering and technology Microporous material 010402 general chemistry 021001 nanoscience & nanotechnology Divinylbenzene 01 natural sciences 0104 chemical sciences chemistry.chemical_compound Adsorption chemistry Chemical engineering Inverse gas chromatography Organic chemistry Physical and Theoretical Chemistry 0210 nano-technology |
| Zdroj: | Russian Journal of Physical Chemistry A. 90:2270-2274 |
| ISSN: | 1531-863X 0036-0244 |
| DOI: | 10.1134/s0036024416110091 |
| Popis: | The sorption of organic molecules on the surfaces of a number of adsorbents based on a microporous copolymer of styrene and divinylbenzene modified with different quantities of uracil is studied by means of inverse gas chromatography at infinite dilution. Samples containing 10–6, 10–5, 10–4, 10–3, 10–2, and 0.5 × 10‒1 weight parts of uracil (the рС of uracil ranges from 1.3 to 6) are studied. The contributions from different intermolecular interactions to the Helmholtz energy of sorption are calculated via the linear free energy relationship. It is found that as the concentration of uracil on the surface of the polymer adsorbent grows, the contributions from different intermolecular interactions and the conventional polarity of the surface have a bend at рС = 3, due probably to the formation of a supramolecular structure of uracil. Based on the obtained results, it is concluded that the formation of the supramolecular structure of uracil on the surface of the polymer adsorbent starts when рС < 3. |
| Databáze: | OpenAIRE |
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