Thermodynamic properties of zirconium tellurides, ZrTe1.843 and Zr5Te4

被引：3
|
作者：
de Boer, R [1 ]
Cordfunke, EHP [1 ]
机构：
[1] Netherlands Energy Res Fdn, ECN, NL-1755 ZG Petten, Netherlands
来源：
JOURNAL OF CHEMICAL THERMODYNAMICS | 1998年 / 30卷 / 01期
关键词：
ZrTe1.843; Zr5Te4; enthalpy of formation; entropy; enthalpy increment; thermodynamic functions;
D O I：
10.1006/jcht.1997.0279
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Thermodynamic properties of ZrTe1.843 and Zr5Te4 have been measured by means of solution calorimetry, drop calorimetry, and adiabatic calorimetry. The thermodynamic functions for both compounds have been calculated. For ZrTe1.843 the following results are obtained: Delta(f)H(m) degrees(298.15 K) = -(295 +/- 7) kJ.mol(-1), S-m degrees(298.15 K) = (117.48 +/- 0.12) J.K-1.mol(-1) and {H-m degrees(T) - H-m degrees(298.15 K)}/(J.mol(-1)) = 68.2251.(T/K) + 4.48851.10(-3).(T/K)(2) + 26808.0.(T/K)(-1)-20830.2. For Zr5Te4 the results are: S-m degrees(298.15 K) = (330 +/- 0.4) J.K-1.mol(-1) and {H-m degrees(T) - H-m degrees(298.15 K)}/(J.mol(-1)) = 212.069/(T/K) + 22.2143.10(-3).(T/K)(2) + 314500.(T/K) - 66257.8. The results of the measurements on ZrTe1.843 are compared with previously reported measurements on ZrTe2. (C) 1998 Academic Press Limited.
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页码：87 / 108
页数：22
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