Skip to main content
SpringerLink
Log in

Calculation of salt activities in molten salt hydrates applying the modified BET equation, I: Binary systems

Berechnung von Salz-Aktivitäten in geschmolzenen Salzhydraten mittels der modifizierten BET-Gleichung, 1. Mitt.: Binäre Systeme

  • Anorganische Und Physikalische Chemie
  • Published:
Monatshefte für Chemie / Chemical Monthly Aims and scope Submit manuscript

Summary

On the basis of the modified BET model according to Stokes and Robinson, an equation for the calculation of salt activities in molten salt hydrates has been derived. The equation is used to describe successfully the liquidus curves of the hydrates of MgCl2, Mg(NO3)2 and CaCl2 inT-x diagrams. A promissing feature of the model is the small number of adjustable parameters and its extrapolative power.

Zusammenfassung

Auf der Grundlage des modifizierten BET-Modells nach Stokes und Robinson wurde eine Gleichung zur Berechnung der Salzaktivitäten in geschmolzenen Salzhydraten abgeleitet. Mit der Gleichung wurden die Liquiduslinien der Hydrate von MgCl2, Mg(NO3)2 und CaCl2 imT-x-Diagramm beschrieben. Besondere Charakteristika des Modells sind die kleine Anzahl adjustierbarer Parameter und die Möglichkeiten zu Extrapolationen.

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. Wells A. F. (1975) Structural Inorganic Chemistry. Clarendon Press, Oxford

    Google Scholar 

  2. Angell C. A. (1966) J. Am. Chem. Soc.88: 5192

    Google Scholar 

  3. Caminiti R., Licheri G., Piccaluga G., Pinna G., Magini M. (1979) Rev. Inorg. Chem.1: 333

    Google Scholar 

  4. Okada I., Kitsuno Y., Lee H.-G., Ohtaki H. (1982) Ions and Molecules in Solution27: 81

    Google Scholar 

  5. Braunstein J. (1971) In: Petrucci S. (ed.) Ionic Interactions, Vol. I. Academic Press, New York

    Google Scholar 

  6. Jain S. K. (1980) J. Chem. Eng. Data25: 36

    Google Scholar 

  7. Emons H.-H., Voigt W., Wollny F.-W. (1986) Z. Phys. Chem. (Leipzig)267: 1

    Google Scholar 

  8. Emons H.-H., Fanghänel Th., Voigt W. (1986) Sitzungsber. Akad. Wiss. DDR: 3N

  9. Valyashko V. M., Urusova M. A., Voigt W., Emons H.-H. (1988) Zh. Neor. Khim.33: 288

    Google Scholar 

  10. Emons H.-H., Dittrich A., Voigt W. (1986) Proc. Joint Int. Symp. on Molten Salts, Honululu87–7: 111

    Google Scholar 

  11. Simonson J. M., Pitzer K. S. (1986) J. Phys. Chem.90: 3009

    Google Scholar 

  12. Barry J. C., Richter J., Stich E. (1988) Ber. Bunsenges. Phys. Chem.92: 1118

    Google Scholar 

  13. Pitzer K. S. (1991) Activity Coefficients in Electrolyte Solutions, 2nd Ed. CRC Press, Boca Raton, Boston

    Google Scholar 

  14. Stokes R. H., Robinson R. A. (1948) J. Am. Chem. Soc.70: 1870

    Google Scholar 

  15. Brunauer S., Emmett P. H., Teller E. (1938) J. Am. Chem. Soc.60: 309

    Google Scholar 

  16. Sangster J., Abraham M.-C., Abraham M. (1979) J. Chem. Thermodyn.11: 619

    Google Scholar 

  17. Abraham M.-C., Abraham M., Sangster J. (1980) J. Chem. Eng. Data25: 331

    Google Scholar 

  18. Abraham M.-C., Abraham M., Sangster J. (1980) Can. J. Chem.58: 1480

    Google Scholar 

  19. Abraham M. (1981) Electrochim. Acta26: 1397

    Google Scholar 

  20. Kodejš Z., Špalkova H., Sacchetto G. A. (1988) J. Chem. Thermodyn.20: 363

    Google Scholar 

  21. Lane G. A. (1983) Solar Heat Storage: Latent Heat Materials, Vol. I. CRC Press, Boca Raton, Florida

    Google Scholar 

  22. Trudelle M.-C., Abraham M., Sangster J. (1977) Can. J. Chem.55: 1713

    Google Scholar 

  23. Richardson C. B., Kurtz C. A. (1984) J. Am. Chem. Soc.106: 6615

    Google Scholar 

  24. Abraham M. (1981) Rev. Roum. Chim.26: 829

    Google Scholar 

  25. Bronstein I., Semendjajew K. (1969) Taschenbuch der Mathematik. Teubner, Leipzig

    Google Scholar 

  26. Dittrich A. (1986) Dissertation Thesis. Bergakademie Freiberg

  27. Hoffmann F., Voigt W. (unpublished results)

  28. Ewing W. W., Klinger E., Brandner J. D. (1934) J. Am. Chem. Soc.56: 1053

    Google Scholar 

  29. Sleverts A., Petzold W. (1932) Z. Anorg. Chem.205: 121

    Google Scholar 

  30. Ewing W. W., Brandner J. D., Slichter C. B., Griesinger W. K. (1933) J. Am. Chem. Soc.55: 4822

    Google Scholar 

  31. Fanghänel T., Kravchuk K., Voigt W., Emons H.-H. (1987) Z. anorg. allg. Chem.547: 21

    Google Scholar 

  32. Clynne M. A., Potter II R. W. (1979) J. Chem. Eng. Data24: 338

    Google Scholar 

  33. Garvin D., Parker V. B., White Jr. H. J. (1987) CODATA Thermodynamic Tables. Springer, Berlin, Heidelberg, New York, Tokyo

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Institut für Physikalische Chemie, Bergakademie Freiberg — TU, Leipziger Straße, Postfach 47, D-09599, Freiberg, Germany

    W. Voigt

Authors
  1. W. Voigt
    View author publications

    You can also search for this author in PubMed Google Scholar

Additional information

Dedicated to o. Univ._Prof. Dipl.-Ing. Dr. mont. Heinz Gamsjäger on the occasion of his 60th birthday

Rights and permissions

Reprints and permissions

About this article

Cite this article

Voigt, W. Calculation of salt activities in molten salt hydrates applying the modified BET equation, I: Binary systems. Monatsh Chem 124, 839–848 (1993). https://doi.org/10.1007/BF00816406

Download citation

  • Received:

  • Accepted:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF00816406

Keywords

Search

Navigation