Thermodynamic properties of EuCl2 and the NaCl-EuCl2 system

被引：18

作者：

Da Silva, F

Rycerz, L

Gaune-Escard, M

机构：

[1] IUSTI, CNRS, UMR 6595, F-13453 Marseille 13, France

[2] Wroclaw Univ Technol, Inst Inorgan Chem & Met Rare Elements, PL-50370 Wroclaw, Poland

来源：

ZEITSCHRIFT FUR NATURFORSCHUNG SECTION A-A JOURNAL OF PHYSICAL SCIENCES | 2001年 / 56卷 / 9-10期

关键词：

europium dichloride; sodium chloride; phase diagram; enthalpy of transition; heat capacity;

D O I：

10.1515/zna-2001-0907

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The temperature and enthalpy of the phase transition and fusion of EUCl2 were determined and found to be 1014 K, 11.5 kJ mol(-1) and 1125 K, 18.7 kJ mol(-1), respectively. Additionally, the heat capacity of solid EuCl2 was measured by Differential Scanning Calorimetry in the temperature range 306 - 1085 K. The results were fitted to the linear equation C-0(p.m) = (68.27 + 0.0255 T/K) J mol(-1) K-1 in the temperature range 306 - 900 K. Due to discrepancies in the literature on the temperature of fusion of EuCl2, the determination of the NaCl-EuCl2 phase diagram was repeated. It consists of a simple eutectic equilibrium at T-eut = 847 K with x(EuCl2) = 0.49.

引用

页码：647 / 652

页数：6

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