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  • 1
    ISSN: 0044-2313
    Keywords: Ternary sodium chlorides ; Holmium ; Erbium ; Phase diagrams ; Thermodynamic properties ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Ternary Chlorides in the Systems NaCl/HoCl3 and NaCl/ErCl3Phase diagrams of the systems NaCl/HoCl3 and NaCl/ErCl3 were determined by means of DTA and high-temperature XRD. There exist compounds Na3LnCl6, NaLnCl4 (Ln = Ho, Er) and NaHo2Cl7. NaHoCl4 undergoes a phase transition at 374°C from the NaGdCl4- to the NaErCl4- type of structure. The thermodynamic functions for the formation of the compounds from NaCl and LnCl3 were determined by solution calorimetry and e.m.f. measurements in galvanic cells for solid electrolytes. The compounds NaLnCl4 are the most stable ones.
    Notes: Die Zustandsdiagramme der Systeme NaCl/HoCl3 und NaCl/ErCl3 wurden mittels DTA und Hochtemperatur-Guinieraufnahmen untersucht. Es existieren Verbindungen Na3LnCl6 und NaLnCl4 (Ln = Ho, Er) sowie NaHo2Cl7. NaHoCl4 wandelt sich bei 374° vom NaGdCl4- in den NaErCl4-Typ um. Mittels Lösungskalorimetrie und EMK-Messungen in galvanischen Feststoffzellen wurden die thermodynamischen Funktionen der ternären Chloride bezüglich der Bildung aus NaCl und LnCl3 bestimmt. Die Verbindungen NaLnCl4 weisen die größte Stabilität auf.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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