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Journal of Applied Spectroscopy

, Volume 81, Issue 3, pp 422–426 | Cite as

Active Sites on the Surface of Nano-Sized SiO2–TiO2 Composites

  • M. S. Valova
  • O. V. Koryakova
  • A. I. Maksimovskikh
  • O. V. Fedorova
  • A. N. Murashkevich
  • O. A. Alisienok
Article

The nature and amount of active sites on the surface of nano-sized SiO2–TiO2 oxides were studied by FTIR spectroscopy and back-titration methods. Increasing the TiO2 content in the SiO2–TiO2 composites increased the amount of activated surface H2O and adsorbed CO2. This increased the amount of active basic centers on the oxide surface and caused the first of two observed mechanisms for benzaldehyde adsorption (with and without its activation) to begin to prevail.

Keywords

SiO2–TiO2 composite nano-sized oxide sol–gel method active site heterogeneous catalysis adsorption back-titration method 

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References

  1. 1.
    A. A. Davydov and N. Sheppard, Molecular Spectroscopy of Oxide Catalyst Surfaces, Wiley, Hoboken, New Jersey (2003), p. 10.CrossRefGoogle Scholar
  2. 2.
    V. G. Kharchuk, O. V. Koryakova, E. F. Khmara, and M. A. Uimin, Analitika Kontrol’, 9, No. 4, 423–427 (2005).Google Scholar
  3. 3.
    O. V. Fedorova, O. V. Koryakova, M. S. Valova, I. G. Ovchinnikova, Yu. A. Titova, G. L. Rusinov, and V. N. Charushin, Kinet. Katal., 51, No. 4, 590–596 (2010).CrossRefGoogle Scholar
  4. 4.
    O. V. Fedorova, M. S. Valova, Yu. A. Titova, I. G. Ovchinnikova, A. N. Grishakov, M. A. Uimin, A. A. Mysik, A. E. Ermakov, G. L. Rusinov, and V. N. Charushin, Kinet. Katal., 52, No. 2, 234–241 (2011).CrossRefGoogle Scholar
  5. 5.
    A. N. Murashkevich, A. S. Lavitskaya, O. A. Alisienok, and I. M. Zharskii, Neorg. Mater., 45, No. 10, 1223–1229 (2009).CrossRefGoogle Scholar
  6. 6.
    A. N. Murashkevich, O. A. Alisienok, I. M. Zharskiy, and E. K. Yukhno, J. Sol-Gel Sci. Technol., 65, 367–373 (2013).Google Scholar
  7. 7.
    A. N. Murashkevich, O. A. Alisienok, and I. M. Zharskii, Kinet. Katal., 52, No. 6, 830–837 (2011).CrossRefGoogle Scholar
  8. 8.
    GOST 2642.6-97. Refractories and refractory raw materials. Methods for the determination of titanium(IV) oxide.Google Scholar
  9. 9.
    GOST 18307. Soot white. Specifi cations.Google Scholar
  10. 10.
    V. N. Borodin, Zh. Fiz. Khim., 51, 928–929 (1977).Google Scholar
  11. 11.
    A. B. Shishmakov, Yu. V. Mikushina, O. V. Koryakova, V. V. Matskevich, N. A. Zhuravlev, V. G. Kharchuk, and L. A. Petrov, Zh. Neorg. Khim., 53, No. 10, 1667–1672 (2008).Google Scholar
  12. 12.
    L. J. Bellamy, The Infra-Red Spectra of Complex Molecules, 2nd edn., Methuen & Co., London (1958).Google Scholar

Copyright information

© Springer Science+Business Media New York 2014

Authors and Affiliations

  • M. S. Valova
    • 1
  • O. V. Koryakova
    • 1
  • A. I. Maksimovskikh
    • 2
  • O. V. Fedorova
    • 1
  • A. N. Murashkevich
    • 3
  • O. A. Alisienok
    • 3
  1. 1.I. Ya. Postovsky Institute of Organic Synthesis, Ural BranchRussian Academy of SciencesEkaterinburgRussia
  2. 2.Ural Federal University named after the First President of Russia B. N. Yeltsin, Institute of Natural SciencesEkaterinburgRussia
  3. 3.Belarusian State Technological UniversityMinskBelarus

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