Advertisement

Journal of Materials Science

, Volume 20, Issue 9, pp 3219–3229 | Cite as

Reaction of polycrystalline Na β″ -alumina with CO2 and H2O and the formation of hydroxyl groups

  • J. B. Bates
  • D. Dohy
  • R. L. Anderson
Papers

Abstract

The reactions of polycrystalline Na β″-alumina with CO2 and H2O were investigated using infrared reflectance methods. These reactions result in the replacement of Na+ ions with H3O+ ions and the formation of a scale of NaHCO3 or hydrated Na2CO3 on the surfaces of ceramic specimens. The composition of the scale formed depends on the pressures of CO2 and H2O: NaHCO3 forms at high CO2 pressure while Na2CO3 · XH2O forms at low CO2 pressures. The H3O+ ions dislocate by an endothermic process to produce OH species in the conduction layers of the grains. The removal of these species by H2O evolution at high temperature implies that an irreversible change occurs in the composition of the surface region of the ceramic.

Keywords

Reflection Spectrum Conduction Layer Ceramic Specimen Effective Path Length Multiple Internal Reflection 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    J. T. Kummer, in “Progress in Solid State Chemistry”, Vol. 7, edited by H. Reiss and J. O. McCaldin (Pergamon, New York, 1972) p. 141.Google Scholar
  2. 2.
    B. Dunn, J. Amer. Ceram. Soc. 64 (1981) 125.CrossRefGoogle Scholar
  3. 3.
    F. Harbach, Solid State Ionics 9/10 (1983) 231.CrossRefGoogle Scholar
  4. 4.
    J. Garbarczyk, W. Jakubowski and M. Wasiucionek, ibid. 9/10 (1983) 249.CrossRefGoogle Scholar
  5. 5.
    S. N. Heavens, J. Mater. Sci. 17 (1982) 965.CrossRefGoogle Scholar
  6. 6.
    L. C. DeJonghe and L. Feldman, Mat. Res. Bull. 15 (1980) 777.CrossRefGoogle Scholar
  7. 7.
    N. Keddar, D. L. Kirk and S. G. Johnson, Phys. Status Solidi (a) 82 (1984) 327.CrossRefGoogle Scholar
  8. 8.
    J. B. Bates and D. Dohy, unpublished (1983).Google Scholar
  9. 9.
    A. S. Barker Jr, J. A. Ditzenberger and J. P. Remieka, Phys. Rev. B14 (1976) 386.CrossRefGoogle Scholar
  10. 10.
    R. Frech and J. B. Bates, Spectrochim. Acta 35A (1979) 685.CrossRefGoogle Scholar
  11. 11.
    M. H. Brooker and J. B. Bates, J. Chem. Phys. 54 (1971) 4788.CrossRefGoogle Scholar
  12. 12.
    N. J. Harrick, “Internal Reflection Spectroscopy” (John Wiley, New York, 1967).Google Scholar
  13. 13.
    J. B. Bates, J. C. Wang, N. J. Dudney and W. E. Brundage, Solid State Ionics 9/10 (1983) 237.CrossRefGoogle Scholar
  14. 14.
    A. S. Gilbert and N. Sheppard, J. Chem. Soc. Faraday Trans. II 69 (1973) 1628.CrossRefGoogle Scholar
  15. 15.
    Ph. Colomban and A. Novak, Solid State Commun. 32 (1979) 467.CrossRefGoogle Scholar
  16. 16.
    J. B. Bates, N. J. Dudney, G. M. Brown, J. C. Wang and R. Frech, J. Chem. Phys. 77 (1982) 4838.CrossRefGoogle Scholar
  17. 17.
    N. J. Dudney, J. B. Bates and J. C. Wang, ibid. 77 (1982) 4857.CrossRefGoogle Scholar
  18. 18.
    C. E. Vanderzee, J. Chem. Thermodynamics 14 (1982) 219.CrossRefGoogle Scholar
  19. 19.
    “JANAF Thermochemical Tables”, 2nd Edn, NSRDS-NBS 37 (US Government Printing Office, Washington, D.C.).Google Scholar
  20. 20.
    K. Buijs and C. J. H. Schutte, Spectrochim. Acta 17 (1961) 917.CrossRefGoogle Scholar
  21. 21.
    W. B. White, in “The Infrared Spectra of Minerals”, edited by V. C. Farmer (Mineralogical Society, London, 1974).Google Scholar
  22. 22.
    D. Eisenberg and W. Kauzmann, “The Structure and Properties of Water” (Oxford University Press, Oxford, 1969).Google Scholar
  23. 23.
    J. D. Hodge, Amer. Ceram. Soc. Bull. 62 (1983) 244.Google Scholar
  24. 24.
    T. A. Hunt, N. Weber and T. Cole, in “Fast Ion Transport in Solids”, edited by P. Vashishta, J. N. Mundy, and G. K. Shenoy (North Holland, Amsterdam, 1979) p. 95.Google Scholar
  25. 25.
    G. C. Farrington and B. Dunn, Solid State Ionics 7 (1982) 267.CrossRefGoogle Scholar

Copyright information

© Chapman and Hall Ltd 1985

Authors and Affiliations

  • J. B. Bates
    • 1
  • D. Dohy
    • 1
  • R. L. Anderson
    • 1
  1. 1.Solid State DivisionOak Ridge National LaboratoryOak RidgeUSA

Personalised recommendations