Abstract
The influence of the modification of silica by octyltrichlorosilane with the formation of an oligomeric grafted layer (sample C8(II)) and additional silanization (sample C8(III)) on the thermodynamic adsorption characteristics (TACs) of different classes of organic compounds was investigated by gas chromatography. It was shown that the modification leads to decreased adsorption values for most of the investigated compounds (with the exception of alkanes, for which TACs on sample C8(II) approach the values observed on the initial support, due probably to additional interactions with silanol groups formed in modifying the surface with octyltrichlorosilane). It was established that blocking these silanol groups during additional silanization with trimethylsilane resulted in inert surfaces whose adsorption properties with respect to many compounds (including some capable of participating in strong specific interactions) approaches to the properties of octyl-silica with a close-packed grafted monolayer.
Similar content being viewed by others
References
A. V. Kiselev, Intermolecular Interactions in Adsorption and Chromatography (Vysshaya Shkola, Moscow, 1986) [in Russian].
Chemistry of Graft Surface Compounds, Ed. by G. V. Lisichkin (Fizmatlit, Moscow, 2003) [in Russian].
A. Vailaya, J. Liq. Chromatogr. Rel. Technol. 28, 965 (2005).
A. Y. Fadeev, in Encyclopedia of Surface and Colloid Science, Ed. by P. Somasundaran (Taylor and Francis, New York, 2006), p. 2854.
D. Barriet and T. R. Lee, Curr. Opinion Coll. Interf. Sci. 8, 236 (2003).
A. Y. Fadeev and T. J. McCarthy, Langmuir 16, 7268 (2000).
A. Y. Fadeev and Y. V. Kazakevich, Langmuir 18, 2665 (2002).
J. W. Krumpfer and A. Y. Fadeev, Langmuir 22, 8271 (2006).
Y. Sudo, J. Chromatogr., A 757, 21 (1997).
T. M. Roshchina, N. K. Shoniya, L. E. Kitaev, and K. B. Gurevich, Zh. Fiz. Khim. 75, 521 (2001) [Russ. J. Phys. Chem. A 75, 452 (2001)].
E. Papirer, H. Balard, and C. Vergelati, Adsorption on Silica Surfaces, Surfactant Science Ser. (Marcel Dekker, New York, 2000), Vol. 90, p. 205.
A. Voelkel, B. Strzemiecka, K. Adamska, and K. Milczewska, J. Chromatogr., A 1216, 1551 (2009).
A. A. Serdan, Yu. S. Nikitin, S. M. Staroverov, and G. V. Lisichkin, Zh. Fiz. Khim. 60, 147 (1986).
T. M. Roshchina, K. B. Gurevich, A. Y. Fadeev, et al., J. Chromatogr., A 844, 225 (1999).
Experimental Methods in Adsorption and Molecular Chromatography, Ed. by Yu. S. Nikitin and R. S. Petrova (Mosk. Gos. Univ., Moscow, 1990) [in Russian].
K. B. Gurevich, T. M. Roshchina, N. K. Shonia, et al., J. Coll. Interface Sci. 254, 39 (2002).
D. Kantro, S. Brunauer, and C. Weise, Adv. Chem. Ser. 33, 199 (1961).
N. V. Kel’tsev, Principles of Adsorption Techniques (Khimiya, Moscow, 1984), pp. 279–280 [in Russian].
Chemists Manual (Gostekhizdat, Leningrad, Moscow, 1952), Vol. 3, p. 237 [in Russian].
T. M. Roshchina, T. A. Kuznetsova, M. S. Lagutova, and A. M. Tolmachev, Vestn. Mosk. Univ., Ser. Khim. 48, 230 (2007).
T. M. Roshchina, N. K. Shoniya, M. S. Lagutova, and A. Yu. Fadeev, Zh. Fiz. Khim. 82, 470 (2008) [Russ. J. Phys. Chem. A 82, 390 (2008)].
R. Sh. Vartapetyan and A. M. Voloshchuk, Usp. Khim. 64, 1055 (1995).
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © T.M. Roshchina, N.K. Shoniya, O.Ya. Tayakina, A.Y. Fadeev, 2011, published in Zhurnal Fizicheskoi Khimii, 2011, Vol. 85, No. 2, pp. 352–359.
Rights and permissions
About this article
Cite this article
Roshchina, T.M., Shoniya, N.K., Tayakina, O.Y. et al. Vapor phase adsorption of organic compounds on octyl silicas. Russ. J. Phys. Chem. 85, 298–305 (2011). https://doi.org/10.1134/S0036024411020282
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S0036024411020282