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Magic angle spinning29Si and27Al NMR study of mordenite dealumination

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Abstract

Magic angle spinning29Si NMR presents a rapid qualitative method of assessing the degree of dealumination of sodium mordenite modified by acid leaching and heat treatment. A quantitative determination of the29Si coordination sphere is hampered by the overlap of chemical shift ranges for Si−O−Al and Si−O−H species. MAS27Al NMR indicates the presence of octahedrally coordinated Al in interstitial sites in all treated samples. On treating mordenite samples at high temperatures (∼700°C) much of the Al becomes invisible to the NMR experiment because of its location in sites of low symmetry and large quadrupole coupling constant.

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References

  1. 1.

    W. L. Kranich, Y. H. Ma, L. B. Sand, A. H. Weiss, and I. Zwiebel:Adv. Chem. 101, 502 (1971).

  2. 2.

    K. Niachev, V. Garanin, T. Isakova, V. Kharlamov, and V. Bogomolov:Adv. Chem. 102, 441 (1971).

  3. 3.

    D. K. thakur and S. W. Weller:Adv. Chem. 121, 596 (1973).

  4. 4.

    P. E. Eberly, C. N. Kimberlin, and A. Voorhies:J. Catal. 22, 429 (1971).

  5. 5.

    D. Thakur and S. W. Weller:J. Catal. 24, 543 (1972).

  6. 6.

    f. R. Cannings:J. Phys. Chem. 72, 4691 (1968).

  7. 7.

    S. M. Riseman, F. E. Massoth, G. M. Dhaz, and E. M. Eyring:J. Phys. Chem. 86, 1760 (1982).

  8. 8.

    E. Lippmaa, M. Magi, A. Samoson, M. Tarmak, and G. Engelhardt:J. Amer. Chem. Soc. 103, 4992 (1981).

  9. 9.

    C. A. Fyfe, G. C. Gobbi, J. Klinowski, J. M. Thomas, and S. Ramdas:Nature 296, 530 (1982).

  10. 10.

    C. A. Fyfe, G. C. Gobbi, J. S. Hartman, J. Klinowski, and J. M. Thomas:J. Phys. Chem. 85, 2590 (1981).

  11. 11.

    G. E. Maciel and D. W. Sindorf:J. Amer. Chem. Soc. 102, 7606 (1980).

  12. 12.

    D. Muller, W. Gessner, H. J. Behrens, and G. Scheler:Chem. Phys. Lett. 79, 59 (1981).

  13. 13.

    B. Staudte:Z. Phys. Chem. (Leipzig) 258, 805 (1977).

  14. 14.

    W. M. Meier:Z. Kristallogr. 115, 439 (1961).

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Ripmeester, J.A., Majid, A. & Hawkins, R.E. Magic angle spinning29Si and27Al NMR study of mordenite dealumination. Journal of Inclusion Phenomena 1, 193–198 (1983). https://doi.org/10.1007/BF00656822

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Key words

  • Magic angle spinning29Si NMR
  • magic angle spinning27Al NMR
  • sodium mordenite
  • zeolites

NRCC Number

  • 22736