Physicochemical properties of the surfaces of silica species

The results from studying the physicochemical characteristics of the adsorption of n-alkanes, arenes, and acetonitrile on silicas of different origins, silica gels, and silochromes are presented. It is shown that increasing the concentration of silanol groups reduces the role of dispersion interacti...

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Published in:Russian Journal of Physical Chemistry A 2017-01, Vol.91 (2), p.217-225
Main Authors: Roshchina, T. M., Shoniya, N. K., Tegina, O. Ya, Tkachenko, O. P., Kustov, L. M.
Format: Article
Language:English
Subjects:
Acetonitrile
Alkanes
Aromatic compounds
Chemistry
Chemistry and Materials Science
Nanomaterials and Environment
Physical Chemistry
Silica gel
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description The results from studying the physicochemical characteristics of the adsorption of n-alkanes, arenes, and acetonitrile on silicas of different origins, silica gels, and silochromes are presented. It is shown that increasing the concentration of silanol groups reduces the role of dispersion interactions accompanied by the intensification of specific interactions on silica gels, compared to silochromes. According to diffuse reflectance FTIR spectroscopy data, the acidity of silanol groups on silica gel is in this case less pronounced.
doi_str_mv 10.1134/S003602441702025X
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subjects Acetonitrile
Alkanes
Aromatic compounds
Chemistry
Chemistry and Materials Science
Nanomaterials and Environment
Physical Chemistry
Silica gel
title Physicochemical properties of the surfaces of silica species
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