Low-temperature combustion synthesis and characterization of Ce1-xPrxO2-δ solid solutions

被引：0
|
作者：
Peng, Cheng [1 ]
Zhang, Zhen [1 ]
Huang, Donglin [1 ]
Liu, Yanli [2 ]
机构：
[1] S China Univ Technol, Coll Chem, Guangzhou 510640, Peoples R China
[2] Hunan Univ, Coll Mat Sci & Engn, Changsha 410082, Hunan, Peoples R China
来源：
HIGH-PERFORMANCE CERAMICS V, PTS 1 AND 2 | 2008年 / 368-372卷
关键词：
nanocrystalline powders; solid electrolyte; combustion synthesis; cerium oxide;
D O I：
10.4028/www.scientific.net/KEM.368-372.253
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：
Pr2O3-doped ceria nanopowders were synthesized by a nitrate-citrate combustion process. This route is based on the gelling of nitrate solutions by the addition of citric acid and ammonium hydroxide, followed by an intense combustion process due to an exothermic redox reaction between nitrate and citrate ions. XRD analysis showed that no impurity were observed up to x=0.3 in Ce1-xPrxO2-delta Systems. The influence of ignition temperature on the characteristics of the powders was studied. The change of the crystal structure with the content of doped Pr was investigated. The highest ionic conductivity, sigma(600 degrees C)=2.45 x 10(-3)S/cm, was found for the composition of x=0.15.
引用
收藏
页码：253 / +
页数：2
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