Adsorption properties of a silicagel surface with grafted transition metal acetylacetonate complexes E. A. Pakhnutova, Zh. V. Faustova, Yu. G. Slizhov
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ArticleSubject(s): адсорбенты | хелаты | газовая хроматография | ацетилацетонаты переходных металлов | термодинамические характеристики адсорбции | силикагелиGenre/Form: статьи в журналах Online resources: Click here to access online
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Russian journal of physical chemistry A Vol. 92, № 1. P. 153-159Abstract: 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 q¯dif,1 ; changes in standard differential molar entropy ΔS¯S1,C ; and, for polar adsorbates, contributions Δq¯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.
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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 q¯dif,1 ; changes in standard differential molar entropy ΔS¯S1,C ; and, for polar adsorbates, contributions Δq¯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.
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