Solutions of Nitrogen in Liquid Lithium Containing Dissolved Alkaline Earth Metals: Solubilities, Precipitating Species and Phase Relationships

  • P. Hubberstey
  • P. G. Roberts


Several years ago we reported the results of a detailed study of the reaction of nitrogen with solutions of alkaline earth metals in liquid sodium [1–4]. For the Na-Ba-N system, resistivity [1] and solubility [2] studies of the solutions coupled with X-ray powder diffraction studies of the solid products [3] indicated that an initial solution process is followed by the precipitation of Ba2N which, in the presence of excess nitrogen, reacts further to form Ba3N2- Since the extent of the solution process is determined solely by the amount of barium dissolved in the liquid sodium, precipitation commencing at a Ba:N ratio of 4:1, it has been suggested [5] that the nitrogen, which is effectively insoluble in liquid sodium [6], is solvated by the barium forming a soluble “Ba4N” species. The reaction sequence, which can be summarised as follows.


Eutectic Mixture Thermal Analysis Data Liquid Sodium Binary Eutectic Thermal Arrest 
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Copyright information

© Springer Science+Business Media New York 1995

Authors and Affiliations

  • P. Hubberstey
    • 1
  • P. G. Roberts
    • 1
  1. 1.Chemistry DepartmentUniversity of NottinghamNottinghamEngland

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