4.7 Article

Thermodynamic properties of the NdBr3-MBr binary systems (M = Na, K)

Journal

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
Volume 133, Issue 3, Pages 1589-1596

Publisher

SPRINGER
DOI: 10.1007/s10973-018-7180-4

Keywords

Phase diagrams; Phase transitions; Thermal analysis; Enthalpy; DSC

Funding

  1. Polish Ministry of Science and Higher Education
  2. Algerian Ministry of Higher Education and Scientific Research
  3. Department of Chemistry of Wroclaw University of Science and Technology

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Phase equilibria in the NdBr3-MBr binary systems (M = Na, K) were established by differential scanning calorimetry. The system with NaBr is a simple eutectic system with two compounds that decompose in the solid state (NaNdBr4 at 603 K and Na3NdBr6 at 580 K). In the system with KBr, three stoichiometric compounds exist. First (K3NdBr6) is formed from KBr and K2NdBr5 at 680 K and melts congruently at 918 K. Second (KNd2Br7) melts congruently at 814 K. Third compound (K2NdBr5) melts incongruently at 822 K.

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