Thermochemistry in The Systems Na-O-C, Na-Al-O-C And Na-C-N with Respect to Interactions of Oxygen, Carbon and Nitrogen in Sodium

  • Hans Migge


Basic knowledge of the impurities in liquid sodium as well as in lithium, especially of oxygen, carbon, nitrogen and hydrogen, is a prerequisite for understanding the chemical behaviour of these liquids in their environments. A lot of thermodynamic data of these nonmetallic impurities have therefore been measured and collected (1, 2). The solubilities of the nonmetals in sodium (and lithium) are the main properties of interest, and there is also early know-ledge about interaction between different impurities in the molten metals. However, the results on this subject are inconsistent. By thermochemical analysis oxygen and carbon were shown to be able to form Na2CO3 in liquid sodium at T > 960 K (3–5). Experimental results on the solubility of Na2CO3 in Na in the temperature range 423 K to 673 K (6) are in contradiction to this, where the carbonate should not dissolve, but decompose (3,4). The interaction of nitrogen with carbon in sodium is known in principle from the measurements of the solubility of NaCN (7) and from the detection of this compound in cold traps of sodium loops. The interaction was also demonstrated by comparing the solubilities of carbon, influenced by different concentrations of nitrogen in sodium (4). On the other hand nitrogen was shown to have an extremely low solubility in Na (7).


Carbon Activity Triple Point Nitrogen Pressure Cold Trap Sodium Aluminate 
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  1. 1.
    E. Fromm, and E. Gebhardt (Editors), “Gase und Kohlenstoff in Metallen”, Springer Verlag 1976.Google Scholar
  2. 2.
    E. Fromm, H. Jehn, G. Hörz, “Gases and Carbon in Metals”, Physics Data 5 - 1, 1976.Google Scholar
  3. 3.
    G. Hofer, Z. Metallkd. 60 (1969) 457.Google Scholar
  4. 4.
    R. Ainsley, Linda P. Hartlib, P. M. Holroyd, G. Long, J.Nucl.Mat. 52 (1974) 255.CrossRefGoogle Scholar
  5. 5.
    B. Longson and A. W. Thorley, J. appl. Chem. 20 (1970) 372.CrossRefGoogle Scholar
  6. 6.
    H. T. Carmichael, S. A. Meacheam, APDA-184 (1968).Google Scholar
  7. 7.
    E. Veleckis, K. E. Anderson, F. A. Cafasso, H. M. Feder, Proc. Int. Conf. Sodium Techn., ANL 7520 (1968).Google Scholar
  8. 8.
    H. Migge, Reaktortagung 1980, 25.-27.3. 1980, Berlin, ISSN 0173-0924, Tagungsbericht S. 918.Google Scholar
  9. 9.
    H. Migge, 2. Int. Conf. Liquid Metal Techn. in Energy Production, April 20-24, 1980, Richland, WA, USA.Google Scholar
  10. 10.
    W. Hirschwald, 0. Knacke, P. Reinitzer, Erzmetall X, (1957) 123.Google Scholar
  11. 11.
    S. A. Jansson, “Corrosion by Liquid Metals”, edited by I.E. Draley and I. R. Weeks, Plenum Press, N.Y., London 1970, p. 523.Google Scholar
  12. 12.
    JANAF Thermochemical Tables in J. Phys. and Chem. Reference Data 7 (1978) 793.Google Scholar
  13. 13.
    J. Barin, 0. Knacke, Thermo chemical Properties of Inorganic Substances, Springer Verlag 1973, Supp. 1976.Google Scholar
  14. 14.
    G. K. Johnson, E. H. van Deventer, J. P. Ackerman jr., W. N. Hubbard, J. Chem Thermodyn. 5 (1973) 57.CrossRefGoogle Scholar
  15. 15.
    E. Veleckis, R. M. Yonco, V. A. Maroni, Thermodynamics of Nucl. Mat. 1979, Proc. Int. Symp., Vol. II, Julich 29. Jan. - 2. Febr. 1979, IAEA Wien 1980.Google Scholar
  16. 16.
    T. Moody, J. Chem. Education 43 (1966) 205.CrossRefGoogle Scholar
  17. 17.
    K. Sakurazawa, H. Handa, R. Hara, J. Soc. Chem. Ind. Japan 37 (1934) 701.Google Scholar
  18. 18.
    S. A. Jansson, J. Vacuum Sci. Techn. 7 (1970) 55.Google Scholar
  19. 19.
    H. Migge, 11. Symp. Fusion Techn., Oxford 15.-19. Sept.1980.Google Scholar
  20. 20.
    ANL-7325 (1966).Google Scholar
  21. 21.
    ANL 7125 (1965).Google Scholar
  22. 22.
    E. W. Hobart, R. D. Bjork, Nucl.Applications, 1, (5) (1965) 490.Google Scholar
  23. 23.
    S. A. Jansson, E. Berkey, Corrosion by Liquid Metals, editedGoogle Scholar
  24. 24.
    K. Natesan, T. F. Kassner, Nucl. Techn. 19 (1973) 46, Fig. 12.Google Scholar
  25. 25.
    AI-AEC-12859 (1969)Google Scholar
  26. 26.
    M. G. Down, M. J. Haley, P. Hubberstey, R. J. Pulham, A. E. Thunder, J.C.S. Dalton (1978) 1407.Google Scholar

Copyright information

© Plenum Press, New York 1982

Authors and Affiliations

  • Hans Migge
    • 1
  1. 1.Hahn-Meitner-Institut für Kernforschung Berlin GmbHBerlinFed. Rep. of Germany

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