Skip to main content
SpringerLink
Log in

1H broad-line and MAS NMR: application to the study of acid sites of desilicated zeolite ZSM-5

  • Published:
Catalysis Letters Aims and scope Submit manuscript

Abstract

Broad-line1H NMR study of desilicated zeolite ZSM-5 was carried out as a function of the number of adsorbed water molecules in amounts lower than or equal to that of the Brønsted acid sites. The dissociation coefficient of the acid OH groups, currently associated with the acid strength, was shown not to be affected by the selective removal of Si from the zeolite ZSM-5 framework which resulted in more Brønsted acid sites per unit surface area. On the other hand, by using MAS NMR, bridging Brønsted acid sites hydrogen-bonded to the zeolite framework were identified on the “anhydrous” surface of the desilicated ZSM-5. Moreover, MAS NMR spectra of the desilicated zeolite partially rehydrated showed the presence of some Lewis acid sites.

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. R. Le Van Mao, S. Xiao, A. Ramsaran and J. Yao, J. Mater. Chem. 4 (1994) 605.

    Google Scholar 

  2. R. Le Van Mao, N.T. Vu, S. Xiao and A. Ramsaran, J. Mater. Chem. 4 (1994) 1143.

    Google Scholar 

  3. R. Le Van Mao, A. Ramsaran, S. Xiao and V. Semmer, J. Mater. Chem. 5 (1995) 533.

    Google Scholar 

  4. S. Xiao, R. Le Van Mao and G. Denes, J. Mater. Chem., in press.

  5. J.A. Rabo and G.J. Gajda, Catal. Rev. Sci. Eng. 31 (1989–90) 385.

    Google Scholar 

  6. H. Pfeifer, in:Acidity and Basicity of Solids: Theory, Assessment and Utility, NATO ASI Series, C 444, eds. J. Fraissard and L. Petrakis (Kluwer Academic, Amsterdam, 1994) p. 255, and references therein.

    Google Scholar 

  7. H. Pfeifer, D. Freude and J. Karger,Catalysis and Adsorption by Zeolites, eds. G. Ohlmann et al. (Elsevier, Amsterdam, 1991) p. 89, and references therein.

    Google Scholar 

  8. H. Pfeifer and H. Ernst, Annual Report on NMR Spectroscopy 28 (1994) 91.

    Google Scholar 

  9. P. Batamack, C. Doremieux-Morin, R. Vincent and J. Fraissard, J. Phys. Chem. 97 (1993) 9779.

    Google Scholar 

  10. P. Batamack, C. Doremieux-Morin, R. Vincent and J. Fraissard, Microporous Mater. 2 (1994) 515.

    Google Scholar 

  11. C. Doremieux-Morin, in:Activity and Basicity: Theory, Assessment and Utility, NATO ASI Series, eds. J. Fraissard and L. Petrakis (Kluwer Academic, Amsterdam, 1994).

    Google Scholar 

  12. R. Le Van Mao, P. Levesque, B. Sjiariel and P.H. Bird, Can. J. Chem. 163 (1985) 3464.

    Google Scholar 

  13. L.W. Beck, J.L. White and J.F. Haw, J. Am. Chem. Soc. 116 (1994) 9657.

    Google Scholar 

  14. E. Brunner, K. Beck, M. Koch, H. Pfeifer, B. Staudte and D. Zscherpel, Stud. Surf. Sci. Catal. 84 (1994) 357.

    Google Scholar 

  15. E. Brunner, K. Beck, M. Koch, L. Heeribout and H.G. Karge, Microporous Mater., accepted.

  16. D. Freude, Chem. Phys. Lett., submitted.

  17. P. Batamack, C. Doremieux-Morin and J. Fraissard, J. Chim. Phys. 89 (1992) 423.

    Google Scholar 

  18. M. Hunger, D. Freude and H. Pfeifer, J. Chem. Soc. Faraday Trans. 87 (1991) 657.

    Google Scholar 

  19. G. Lietz, K.H. Schnabel, Ch. Peuker, Th. Gross, W. Storek and J. Volter, J. Catal. 148 (1994) 562.

    Google Scholar 

  20. M.J. Remy, M.J. Genet, P.P. Notte, P.F. Lardinois and G. Poncelet, Microporous Mater. 2 (1993) 7.

    Google Scholar 

  21. L. Heeribout, C. Doremieux-Morin, R. Vincent and J. Fraissard, to be published.

  22. J. Vedrine, in:Guidelines for Mastering the Properties of Molecular Sieves, NATO ASI Series, Vol. 221 (1989) p. 121.

    Google Scholar 

  23. N.Y. Topsøe, K. Pedersen and E.G. Derouane, J. Catal. 70 (1981) 41.

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Laboratoire de Chimie des Surfaces, Université Pierre et Marie Curie, 4 Place Jussieu, Tour 55, BP 196, 75252, Paris Cedex 05, France

    C. Doremieux-Morin, P. Batamack, L. Heeribout, V. Semmer & J. Fraissard

  2. Laboratories for Inorganic Materials, Department of Chemistry and Biochemistry, Concordia University, 1455 De Maisonneuve West, H3G 1M8, Montreal, Quebec, Canada

    A. Ramsaran, R. Le Van Mao & G. Denes

Authors
  1. C. Doremieux-Morin
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. A. Ramsaran
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. R. Le Van Mao
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. P. Batamack
    View author publications

    You can also search for this author in PubMed Google Scholar

  5. L. Heeribout
    View author publications

    You can also search for this author in PubMed Google Scholar

  6. V. Semmer
    View author publications

    You can also search for this author in PubMed Google Scholar

  7. G. Denes
    View author publications

    You can also search for this author in PubMed Google Scholar

  8. J. Fraissard
    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

Doremieux-Morin, C., Ramsaran, A., Le Van Mao, R. et al. 1H broad-line and MAS NMR: application to the study of acid sites of desilicated zeolite ZSM-5. Catal Lett 34, 139–149 (1995). https://doi.org/10.1007/BF00808330

Download citation

  • Received:

  • Accepted:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF00808330

Keywords

Search

Navigation