Zirconyl-containing microspheric silica gel surfaces |
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| Authors: | S N Lanin B D Kabulov E V Vlasenko N V Kovaleva K S Lanina T A Strepetova K A Akhundzhanov F U Yunusov |
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| Institution: | 1.Faculty of Chemistry,Moscow State University,Moscow,Russia;2.State Unitary Enterprise Fan va terrakiet, Tashkent State Technological University,Tashkent,Uzbekistan |
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| Abstract: | The adsorption properties of two samples of zirconyl-containing silica gels derived from zirconium oxychloride, polyetoxysiloxane
oligomer 3% ZrOCl2/SiO2 (composite 1) and tetraetoxysilane 5% ZrOCl2/SiO2 (composite 2) were investigated by gas chromatography at low surface coverages. n-Alkanes and n-alkenes (C6–C8), C6H6 were used as test adsorbates, along with polar compounds whose molecules had different donor-acceptor interaction abilities.
The dispersion and specific (electron-donor and electronacceptor) components of the energy of intermolecular interactions
for the studied systems were determined from the experimental data on chromatographic retention. It was shown that composite
2 had a higher dispersion potential and higher surface energy characteristics of the surface’s electron-donating and electronacceptor
centers, as compared to composite 1. |
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