The thermochemical properties of BaCeO3(s) and SrCeO3(s) from T = (5 to 1500)K

被引：53

作者：

Cordfunke, EHP ^{[1
]}

Booij, AS ^{[1
]}

Huntelaar, ME ^{[1
]}

机构：

[1] Netherlands Energy Res Fdn, ECN, NL-1755 ZG Petten, Netherlands

来源：

JOURNAL OF CHEMICAL THERMODYNAMICS | 1998年 / 30卷 / 04期

关键词：

strontium cerate; barium cerate; calorimetry; heat capacity; enthalpy increment; enthalpy of formation; entropy;

D O I：

10.1006/jcht.1997.0302

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The standard molar enthalpies of formation of BaCeO3(s) and SrCeO3(s) have been derived by combining the standard molar enthalpies of solution of the two compounds in (1.00 mol.dm(-3) HCl + 0.10 mol.dm(-3) KI)(aq) obtained from literature, and measurements of auxiliary data. The following values have been derived: Delta(f)H(m) degrees(BaCeO3, s, 298.15 K) = -(1690.0 +/- 2.5)kJ.mol(-1) and Delta(f)H(m) degrees{SrCeO3, s, 298.15 K} = -(1687.1 +/- 2.7)kJ.mol(-1). Low-temperature adiabatic heat capacity measurements and high-temperature enthalpy increment measurements by drop calorimetry have been performed on SrCeO3(s), and the thermodynamics of formation of the two compounds have been derived at selected temperatures up to T = 1500 K. (C) 1998 Academic Press Limited.

引用

页码：437 / 447

页数：11

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