Synthesis and thermochemistry of new phase BaCe0.7Nd0.2In0.1O2.85

被引：17

作者：

Matskevich, Nata I. ^{[1
]}

Matskevich, Mariya Yu ^{[1
]}

Wolf, Thomas ^{[2
]}

Bryzgalova, Anna N. ^{[1
]}

Chupakhina, Tatyana I. ^{[3
]}

Anyfrieva, Olga I. ^{[1
]}

机构：

[1] Russian Acad Sci, Nikolaev Inst Inorgan Chem, Siberian Branch, Novosibirsk 630090, Russia

[2] Karlsruhe Inst Technol, Inst Solid State Phys, D-76344 Karlsruhe, Germany

[3] Russian Acad Sci, Ural Branch, Inst Solid State Chem, Ekaterinburg 620041, Russia

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2013年 / 577卷

关键词：

Barium cerate doped by neodymium and indium; Synthesis; Formation enthalpy; Thermodynamic stability; THERMODYNAMIC STABILITIES; CHEMICAL-STABILITY; PEROVSKITE-TYPE; PROTON; ELECTROLYTES; OXIDES; BACEO3; CELLS;

D O I：

10.1016/j.jallcom.2013.04.194

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 BaCe0.7Nd0.2In0.1O2.85 phase has been prepared from BaCO3, CeO2, Nd2O3 and In2O3. X-ray measurements have showed that BaCe0.7Nd0.2In0.1O2.85 has an orthorhombic structure (Pmcn space group). The standard formation enthalpy of BaCe(0.7)Nd(0.2)Ih(0.1)O(2.85) has been determined by solution calorimetry combining solution enthalpies of BaCe0.7Nd0.2In0.1O2.85, BaCl2 + 0.7CeCl(3) + 0.2NdCl(3) + 0.1InCl(3) mixture in 1 M HCl with KI and literature data. We determined the thermodynamic stability of Nd(In)-doped barium cerate with respect to mixtures of binary oxides. On the basis of the data we established that above-mentioned mixed oxide is thermodynamically stable with respect to their decomposition into binary oxides at room temperatures. We also established that BaCe0.7Nd0.2In0.1O2.85 is thermodynamically favored than BaCe0.8Nd0.2O2.9. (C) 2013 Published by Elsevier B.V.

引用

页码：148 / 151

页数：4

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