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Catalysis Letters

, Volume 15, Issue 1–2, pp 65–73 | Cite as

Adsorption effects in aluminophosphate molecular sieves studied by27Al double-rotation NMR

  • R. Jelinek
  • B. F. Chmelka
  • Y. Wu
  • M. E. Davis
  • J. G. Unlan
  • R. Gronsky
  • A. Pines
Article

Abstract

27Al double rotation NMR (DOR) spectroscopy is used to investigate structural changes in the framework of several aluminophosphate molecular sieves upon adsorption of water. The shapes, widths, and positions of the spectral lines yield information on the aluminum environments, adsorption sites, and degree of structural disorder undergone upon water adsorption.

Keywords

NMR (DOR) spectroscopy aluminophosphate molecular sieves aluminum environment adsorption sites structural disorder water adsorption 

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References

  1. [1]
    S.T. Wilson, B.M. Lok and E.M. Flanigen, US Patent 4,310,440 (1982).Google Scholar
  2. [2]
    S.D. Cox, T.E. Gier and G.D. Stucky, Chemistry of Materials 2 (1990) 609.Google Scholar
  3. [3]
    D.W. Breck,Zeolite Molecular Sieves (Kieger, Malabar, 1984).Google Scholar
  4. [4]
    A. Samoson, E. Lippmaa and A. Pines, Mol. Phys. 65 (1988) 1013.Google Scholar
  5. [5]
    Y. Wu, B.F. Chmelka, A. Pines, M.E. Davis, P.J. Grobet and P.A. Jacobs, Nature 346 (1990) 550.Google Scholar
  6. [6]
    R. Jelinek, B.F. Chmelka, Y. Wu, P.J. Grandinetti, A. Pines, P.J. Barrie and J. Klinowski, J. Am. Chem. Soc. 113 (1991) 4097.Google Scholar
  7. [7]
    B.F. Chmelka, Y. Wu, R. Jelinek, M.E. Davis and A. Pines, Stud. Surf. Sci. Catal. 69 (1991) 435.Google Scholar
  8. [8]
    P.J. Barrie, M.E. Smith and J. Klinowksi, Chem. Phys. Lett. 180 (1991) 6.Google Scholar
  9. [9]
    Y. Wu, B.Q. Sun, A. Pines, A. Samoson and E. Lippmaa, J. Magn. Reson. 89 (1990) 297.Google Scholar
  10. [10]
    M.E. Davis, C. Sadarriaga, C. Montes, J. Garces and C. Crowder, Zeolites 8 (1988) 362.Google Scholar
  11. [11]
    P.J. Grobet, A. Samoson, H. Geertz, J.A. Martens and P.A. Jacobs, J. Phys. Chem., in press.Google Scholar
  12. [12]
    J.W. Richardson Jr., J.J. Pluth and J.V. Smith, Acta Cryst. C43 (1987) 1469.Google Scholar
  13. [13]
    A. Endoh, K. Mizoe, K. Tsutsumi and T. Takaishi, J. Chem. Soc. Faraday Trans. 85 (1989) 1327.Google Scholar
  14. [14]
    J.G. Ulan, R. Szostak, K. Sorby and R. Gronsky, in:High Resolution Electron Microscopy of Defects in Materials, Proc. Mat. Res. Soc. Symp., San Francisco, April, 1990, eds. R. Sinclair, D.J. Smith and U. Dahmen.Google Scholar
  15. [15]
    R.M. Dessau, H.L. Schlenker and J.B. Higgins, Zeolites 10 (1990) 522.Google Scholar
  16. [16]
    K. Vinje, J. Ulan, R. Szostak and R. Gronsky, Appl. Catal. 72 (1991) 361.Google Scholar
  17. [17]
    J. Rocha, X. Liu and J. Klinowski, Chem. Phys. Lett. 182 (1992) 531.Google Scholar

Copyright information

© J.C. Baltzer A.G. Scientific Publishing Company 1992

Authors and Affiliations

  • R. Jelinek
    • 1
  • B. F. Chmelka
    • 1
    • 2
  • Y. Wu
    • 1
    • 3
  • M. E. Davis
    • 1
    • 4
  • J. G. Unlan
    • 1
    • 5
  • R. Gronsky
    • 1
    • 6
  • A. Pines
    • 1
  1. 1.Materials Sciences Division, Lawrence Berkeley Laboratory and Department of ChemistryUniversity of CaliforniaBerkeleyUSA
  2. 2.Department of Chemical and Nuclear EngineeringUniversity of CaliforniaSanta BarbaraUSA
  3. 3.Department of PhysicsUniversity of North CarolinaChapel HillUSA
  4. 4.Chemical EngineeringCalifornia Institute of TechnologyPasadenaUSA
  5. 5.Institute for Environmental ChemistryNational Research Council CanadaCanada
  6. 6.Materials and Sciences Division, Lawrence Berkeley LaboratoryNational Center of Electron MicroscopyUSA

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