Adsorption Properties of a Silicagel Surface with Grafted Transition Metal Acetylacetonate Complexes


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Abstract

The adsorption properties of a Silipore 200 surface and chemically modified sorption materials containing nickel, cobalt, and copper acetylacetonates are studied via gas chromatography. n-Alkanes (C6–C9) and adsorbates, the molecules of which have different electron-donating and electron-acceptor properties, are used as test compounds. From experimental data on the retention of adsorbates; their differential molar adsorption heats \(\bar q_{dif,1}\); changes in standard differential molar entropy \(\Delta \bar S_{1,C}^S\); and, for polar adsorbates, contributions \(\Delta \bar q_{dif,1(specific)}\) to the energy of dispersive and specific interactions, are calculated. The effect the metal ion in the structure of acetylacetonate has on the characteristics of thermodynamic retention is shown.

About the authors

E. A. Pakhnutova

National Research Tomsk State University

Author for correspondence.
Email: pakhnutovae@mail.ru
Russian Federation, Tomsk, 634050

Zh. V. Faustova

National Research Tomsk State University

Email: pakhnutovae@mail.ru
Russian Federation, Tomsk, 634050

Yu. G. Slizhov

National Research Tomsk State University

Email: pakhnutovae@mail.ru
Russian Federation, Tomsk, 634050

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