Theoretical Studies on Zeolite Composition and Loewenstein’s Rule

  • Ernst C. Hass
  • Peter J. Plath
  • Paul G. Mezey
Part of the NATO Advanced Study Institutes Series book series (ASIC, volume 67)

Abstract

Synthetic zeolites play an important role in catalysis and, in particular, they are widely used in the petroleum industry. Zeolites are alumosilicate frameworks with a well defined geometrical structure consisting of systems of channels and cavities up to 10Å in diameter. Figure 1 shows the structural arrangement of faujasite type zeolites, the synthetic forms X and Y of which are among the most frequently used zeolite catalysts (1). Each vertex in Figure 1 represents a tetrahedrally coordinated centre occupied by a silicon or aluminum atom, while each edge represents an oxygen bridge between two tetrahedral centres. The Roman numbers indicate the possible positions of charge compensating cations.

Keywords

Petroleum Zeolite Catalysis Hydride Supersaturation 

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References

  1. 1.
    See e.g. D.W. Breck: “Zeolite Molecular Sieves”; Wiley (1974).Google Scholar
  2. 2.
    W. Loewenstein: Amer. Mineralogist 39, 92 (1954). see also: J.R. Goldsmith, F. Laves: Z. Kristallographie 106, 213 (1955).Google Scholar
  3. 3.
    G. Johansson: Acta Chem. Scand. 20, 505 (1966).CrossRefGoogle Scholar
  4. 4.
    J. Haladjian, J. Roziere: J. Inorg. Nucl. Chem. 35, 3821 (1973).CrossRefGoogle Scholar
  5. 5.
    J.V. Smith: “Feldspar Minerals”, Springer, New York (1974).CrossRefGoogle Scholar
  6. 6.
    J.V. Smith: Adv. Chem. Ser. 101, 171 (1971).CrossRefGoogle Scholar
  7. 7.
    W.J. Hehre, W.A. Lathan, R. Ditchfield, M.D. Newton, J.A. Pople: Q.C.P.E. program 236, Indiana University, Bloomington, Indiana.Google Scholar
  8. 8.
    W.J. Hehre, R.F. Stewart, J.A. Pople: J. Chem. Phys. 51, 2657 (1969).CrossRefGoogle Scholar
  9. 9.
    P.G. Mezey: Analysis of Conformational energy hypersurfaces; in: Progress Theoret. Org. Chem. 2, 127 (1977).Google Scholar
  10. 10.
    R. Ahlrichs: Chem. Phys. Letters 34, 570 (1975).CrossRefGoogle Scholar
  11. 11.
    E.C. Hass, P.G. Mezey, P.J. Plath: Theochem, in press.Google Scholar
  12. 12.
    J.A. Tossel, G.V. Gibbs: Acta Cryst. A34, 463 (1978).Google Scholar

Copyright information

© D. Reidel Publishing Company, Dordrecht, Holland 1981

Authors and Affiliations

  • Ernst C. Hass
    • 1
  • Peter J. Plath
    • 2
  • Paul G. Mezey
    • 1
  1. 1.Department of Chemistry and Chemical EngineeringUniversity of SaskatchewanSaskatoonCanada
  2. 2.Forschungsgruppe ‘Angewandte Katalyse’Universität BremenGermany

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