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Effect of Sodium Dodecylsulfate and Cetylpyridinium Chloride Act as Templates at Different pH Values on Sorption and Textural Properties of Mesoporous Silicas

  • Tatyana F. Kouznetsova
  • Anatoly I. Ratko
  • Vladimir S. Komarov
  • Svetlana I. Eremenko
  • Yuriy L. Zub
Part of the NATO Science for Peace and Security Series C: Environmental Security book series (NAPSC)

Abstract

Cationic and anionic surfactants are used for structuring of the negatively charged silica species during the formation of ordered mesoporous silicas from stable dilute silica sols, obtained by ion-exchange method. Isotherms of nitrogen adsorption-desorption at 77 K on silicas, which are prepared by the thermal decomposition of silica hydrogels, obtained at different pH using sodium dodecylsulfate or cetylpyridinium chloride as surfactants, are measured. The shape of the capillary condensation hysteresis and the type of the sorption isotherms are identified using the IUPAC classification. It is found that the adsorption and textural properties of the silica gels depend on the concentration and the type of surfactant (SAA), and also on pH.

Mesoporous silica gel stable silica sol templation cationic and anionic surfactants nitrogen adsorption-desorption isotherms type of isotherms and shape of hysteresis loops pore volume surface area 

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References

References

  1. 1.
    Iler, R.K., The Chemistry of Silica: Solubility, Polymerization, Colloid and Surface Pro-perties, and Biochemistry, New York: Interscience Publication, 1979, vol.2.Google Scholar
  2. 2.
    Okkerse, C.K., Porous Silica, in Physical and Chemical Aspects of Adsorbents and Catalysts, Linsen, B.G., Ed., London and New York: Academic Press, 1970, 213.Google Scholar
  3. 3.
    Kuznetsova, T.F., Eremenko, S.I., Adsorption properties of silica gel prepared from a decationized sol, Colloud Journal, 64, 451-456 (2002).CrossRefGoogle Scholar
  4. 4.
    Barby, D., Silicas, in Characterization of Powder Surfaces, Parfitt, G.D. and Sing, K.S.W., Eds., London and New York: Academic Press, 1976, 353.Google Scholar
  5. 5.
    Bird, P.G., Colloidal solutions of inorganic oxides, U.S. Patent 2244325, 1941.Google Scholar
  6. 6.
    IUPAC, Reporting physisorption data for gas/solid systems with special reference to the determination of surface area and porosity, Pure and Applied Chemistry, 57, 603-619 (1985).CrossRefGoogle Scholar
  7. 7.
    Corma, A., From microporous to mesoporous molecular sieve materials and their use in catalysis, Chemical Reviews, 97, 2373-2419 (1997).CrossRefGoogle Scholar

Copyright information

© Springer Science + Business Media B.V 2008

Authors and Affiliations

  • Tatyana F. Kouznetsova
    • 1
  • Anatoly I. Ratko
    • 1
  • Vladimir S. Komarov
    • 1
  • Svetlana I. Eremenko
    • 1
  • Yuriy L. Zub
    • 2
  1. 1.Institute of General and Inorganic ChemistryNAS of BelarusMinskBelarus
  2. 2.O. O. Chuiko Institute of Surface ChemistryNAS of UkraineKyivUkraine

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