Abstract
Interaction between vapors of organic compounds and water with surfaces of mesoporous silica SBA-15 and silica SBA-15 modified with n-C6F13(CH2)2Si(CH3)2Cl via adsorption under static conditions is studied by means of gas chromatography and IR diffuse reflectance spectroscopy. It is shown that modification notably reduces the energy of disperse and specific interactions, along with the acidity of adsorption centers. Even low concentrations of the grafted groups (0.76 nm–2) allows us to obtain highly hydrophobic coatings on SBA-15 surfaces.
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Original Russian Text © T.M. Roshchina, N.K. Shoniya, O.Ya. Tegina, O.P. Tkachenko, L.M. Kustov, 2016, published in Zhurnal Fizicheskoi Khimii, 2016, Vol. 90, No. 1, pp. 123–133.
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Roshchina, T.M., Shoniya, N.K., Tegina, O.Y. et al. Physicochemical properties of surfaces of SBA-15 silicas, according to adsorption-static, gas-chromatographic, and IR spectroscopic data. Russ. J. Phys. Chem. 90, 191–200 (2016). https://doi.org/10.1134/S0036024416010258
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DOI: https://doi.org/10.1134/S0036024416010258