Energetic characteristics of barium cerates doped by yttrium, gadolinium and luthetium oxides

被引：6
|
作者：
Matskevich, N. I. [1 ,2 ]
Wolf, Th. [1 ]
Matskevich, M. Yu. [2 ,3 ]
机构：
[1] Karlsruhe Inst Technol, Inst Solid State Phys, D-76334 Karlsruhe, Germany
[2] RAS, Nikolaev Inst Inorgan Chem SB, Novosibirsk 630090, Russia
[3] Novosibirsk State Univ, Novosibirsk 630090, Russia
来源：
JOURNAL OF CHEMICAL THERMODYNAMICS | 2018年 / 118卷
关键词：
Barium cerate; Formation enthalpy; Stabilization energy; Lattice energy; THERMODYNAMIC STABILITY; PROTON CONDUCTOR; ELECTROLYTES; ENTHALPIES; BACEO3;
D O I：
10.1016/j.jct.2017.11.010
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
For the first time solution enthalpies of BaCe0.8Y0.1Gd0.1O2.9, BaCe0.8Y0.1Lu0.1O2.9 and mixtures of BaCl2 + 0.8CeCl(3) + 0.1YCl(3) + 0.1GdCl(3), BaCl2 + 0.8CeCl(3) + 0.1YCl(3) + 0.1LuCl(3) in 1 mol dm(-3) HCl with 0.1 mol dm(-3) KI have been measured. On the basis of experimental data obtained and literature data the standard molar enthalpies of formation and stabilization energies were calculated. Using Born-Haber cycle the lattice energies were calculated. It was established that lattice energy was increased from BaCe0.8Y0.1Gd0.1O2.9 to BaCe0.8Y0.1Lu0.1O2.9. It correlates with decreasing of ion radius of rare earth element from gadolinium to lutetium. Increasing of lattice energy with decreasing of ion radius of rare earth element was explained with modified formula of Kapustinskii. (C) 2017 Elsevier Ltd.
引用
收藏
页码：188 / 192
页数：5
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