Skip to main content
SpringerLink
Log in

Brønsted acidity of silica silanol groups induced by adsorption of acids

  • Published:
Catalysis Letters Aims and scope Submit manuscript

Abstract

Surface silanol groups of silica, which never revealed any Brønsted acidity, are shown to donate protons to adsorbed basic molecules, such as ammonia, pyridine or 2,6-dimethylpyridine, after addition of acids such as SO2 or NO2. The latter, when coadsorbed with bases, interact with the oxygen atoms of silanols leading to OH acidity increase and to protonation. Bases, in turn, enhance chemisorption of SO2 or NO2, and strongly held coadsorption products are formed as a result. The proposed mechanism of induced Brønsted acidity could account for the promoting effect of acidic gases in reactions catalysed by metal oxides.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. L. Little, Infrared Spectra of Adsorbed Species (Academic Press, London, 1966).

    Google Scholar 

  2. A.V. Kiselev and V.I. Lygin, Infrared Spectra of Surface Compounds (Wiley, New York, 1975).

    Google Scholar 

  3. G. Busca, Catal. Today 41 (1998) 191.

    Google Scholar 

  4. R.G. Rouxhet and R.E. Sempels, J. Chem. Soc. Faraday Trans. I 70 (1974) 2021.

    Google Scholar 

  5. A.A. Tsyganenko and E.A. Trusov, Colloid J. USSR 40 (1978) 875 (English translation).

    Google Scholar 

  6. K.M. Bulanin, A.V. Alexeev, D.S. Bystrov, J.C. Lavalley and A.A. Tsyganenko, J. Phys. Chem. 98 (1994) 5100.

    Google Scholar 

  7. A. Travert, O.V. Manoilova, A.A. Tsyganenko, F. Maugé and J.C. Lavalley, to be published.

  8. M.A. Babaeva, D.S. Bystrov, A.Yu. Kovalgin and A.A. Tsyganenko, J. Catal. 123 (1990) 396.

    Google Scholar 

  9. A.Yu. Pavlov and A.A. Tsyganenko, Opt. Spectrosk. 77 (1994) 21 (English translation).

    Google Scholar 

  10. M.A. Babaeva, A.A. Tsyganenko and V.N. Filimonov, Kinet. Katal. 25 (1984) 787 (English translation).

    Google Scholar 

  11. J.C. Lavalley, Trends Phys. Chem. 2 (1991) 305.

    Google Scholar 

  12. K. Nakamoto, Infrared and Raman Spectra of Inorganic and Coordination Compounds (Wiley, New York, 1986).

    Google Scholar 

  13. A.Yu. Pavlov and A.A. Tsyganenko, Opt. Spectrosk. 82 (1997) 21 (English translation).

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Institute of Physics, St. Petersburg University, St. Petersburg, 198904, Russia

    A.A. Tsyganenko, E.N. Storozheva & O.V. Manoilova

  2. UMR 6506, ISMRa, Université de Caen, 14050, Caen Cedex, France

    T. Lesage, M. Daturi & J.-C. Lavalley

Authors
  1. A.A. Tsyganenko
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. E.N. Storozheva
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. O.V. Manoilova
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. T. Lesage
    View author publications

    You can also search for this author in PubMed Google Scholar

  5. M. Daturi
    View author publications

    You can also search for this author in PubMed Google Scholar

  6. J.-C. Lavalley
    View author publications

    You can also search for this author in PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

Tsyganenko, A., Storozheva, E., Manoilova, O. et al. Brønsted acidity of silica silanol groups induced by adsorption of acids. Catalysis Letters 70, 159–163 (2000). https://doi.org/10.1023/A:1018845519727

Download citation

  • Issue Date:

  • DOI: https://doi.org/10.1023/A:1018845519727

Search

Navigation