Synthesis and characterization of nanometric strontium-doped ceria solid solutions via glycine-nitrate procedure

被引：11
|
作者：
Matovic, Branko [2 ]
Bucevac, Dusan [2 ]
Jiraborvornpongsa, Noppasint [1 ]
Yoshida, Katsumi [1 ]
Yano, Toyohiko [1 ]
机构：
[1] Tokyo Inst Technol, Nucl Reactors Res Lab, Meguro Ku, Tokyo 1528550, Japan
[2] Univ Belgrade, Inst Nucl Sci Vinea, Belgrade 11001, Serbia
来源：
JOURNAL OF THE CERAMIC SOCIETY OF JAPAN | 2012年 / 120卷 / 1398期
关键词：
Nanopowder; Sr-doped Ceria; Glycine-nitrate procedure; Solid solution; X-ray method; POWDERS; FABRICATION; MICROSTRUCTURE; TRANSMUTATION; ELECTROLYTES; ACTINIDES; CEO2;
D O I：
10.2109/jcersj2.120.69
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Nanometric-sized strontium doped ceria powders were prepared by combustion glycine-nitrate procedure. Cerium nitrate and strontium nitrate were used as starting material whereas glycine is used as a fuel. The tailored composition was: Ce1-xSrxO2-delta with concentration "x" ranging from 0 to 0.15. The effect of dopant concentration and subsequent calcination on crystal stability and lattice parameter was studied. Results showed that the obtained powders were solid solutions with a fluorite-type crystal structure. The particle size was in the nanometric range (<15 nm). Calcination of as-prepared powders at 850 degrees C caused. the formation of secondary phase (SrCeO3) in samples containing with fraction of Sr2+ ions >= 9 mol %. The solubility limit of Sr2+ ions in ceria lattice was between 6 and 9 mol % at 850 degrees C. The solid solution of 6 mol % Sr2+ was stable even at temperature as high as 1550 degrees C. (C)2012 The Ceramic Society of Japan. All rights reserved.
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页码：69 / 73
页数：5
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