Chemical stability of doped BaCeO3-BaZrO3 solid solutions in different atmospheres

被引：60

作者：

Lue Jingde ^{[1
]}

Wang Ling ^{[1
]}

Fan Lihua ^{[1
]}

Li Yuehua ^{[1
]}

Dai Lei ^{[1
]}

Guo Hongxia ^{[1
]}

机构：

[1] Hebei Polytech Univ, Coll Chem Engn & Biotechnol, Tangshan 063009, Peoples R China

来源：

JOURNAL OF RARE EARTHS | 2008年 / 26卷 / 04期

基金：

中国国家自然科学基金;

关键词：

BaCeO3; BaZrO3; proton conductor; chemical stability; different atmospheres; rare earths;

D O I：

10.1016/S1002-0721(08)60127-1

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

BaCe0.45Zr0.45M0.1O3-delta (M=Y, In) and BaCe0.9Y0.1O3-delta were prepared through the conventional solid state reaction route. The chemical stability was investigated in hydrogen, carbon dioxide, and boiling water. Crystalline phase and microstructure of the proton conductor before and after stability test were measured with X-ray diffraction (XRD) and scanning electron microscopy (SEM), respectively. The results showed that all materials were quite stable in H-2 atmosphere. In CO2 atmosphere, BaCe0.45Zr0.45M0.1O3-delta(M=Y, In) were relatively stable, while BaCe0.9Y0.1O3-delta decomposed. In boiling water, BaCe0.9Y0.1O3-delta was quickly decomposed into Ba(OH)(2) and corresponding oxide. BaCe0.45Zr0.45M0.1O3-delta slightly reacted with boiling water and some amorphous phases were formed. However, BaCe0.45Zr0.45In0.1O3-delta was observed to exhibit better stability than BaCe0.45Zr0.45Y0.1O3-delta in water. The experimental results were interpreted in terms of thermodynamic data and tolerance factor.

引用

页码：505 / 510

页数：6

共 25 条

[1] Stability of BaCeO3-based proton conductors in water-containing atmospheres [J].

Bhide, SV ;

Virkar, AV .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1999, 146 (06) :2038-2044

[2] Stability of AB′1/2B"1/2O3-type mixed perovskite proton conductors [J].

Bhide, SV ;

Virkar, AV .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1999, 146 (12) :4386-4392

[3] A kinetic Monte Carlo study of proton diffusion in disordered perovskite structured lattices based on first-principles calculations [J].

Björketun, ME ;

Sundell, PG ;

Wahnström, G ;

Engberg, D .

SOLID STATE IONICS, 2005, 176 (39-40) :3035-3040

[4] THERMODYNAMIC STABILITIES OF SRCEO3 AND BACEO3 USING A MOLTEN-SALT METHOD AND GALVANIC CELLS [J].

GOPALAN, S ;

VIRKAR, AV .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1993, 140 (04) :1060-1065

[5]

GUAN J, 1998, CERAMIC MEMBRANES MI

[6] Non-stoichiometry, grain boundary transport and chemical stability of proton conducting perovskites [J].

Haile, SM ;

Staneff, G ;

Ryu, KH .

JOURNAL OF MATERIALS SCIENCE, 2001, 36 (05) :1149-1160

[7] Prospect of hydrogen technology using proton-conducting ceramics [J].

Iwahara, H ;

Asakura, Y ;

Katahira, K ;

Tanaka, M .

SOLID STATE IONICS, 2004, 168 (3-4) :299-310

[8] Protonic conduction in Zr-substituted BaCeO3 [J].

Katahira, K ;

Kohchi, Y ;

Shimura, T ;

Iwahara, H .

SOLID STATE IONICS, 2000, 138 (1-2) :91-98

[9] Preparation of BaCe0.8Gd0.2O3-δ by the citrate method and its application in the synthesis of ammonia at atmospheric pressure [J].

Li, ZJ ;

Liu, RQ ;

Wang, JD ;

Xie, YH ;

Yue, F .

JOURNAL OF SOLID STATE ELECTROCHEMISTRY, 2005, 9 (04) :201-204

[10] Protonic conductivity nanostructured ceramic film with improved resistance to carbon dioxide at elevated temperatures [J].

Ma, XQ ;

Dai, JX ;

Zhang, H ;

Reisner, DE .

SURFACE & COATINGS TECHNOLOGY, 2005, 200 (5-6) :1252-1258

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