Low-Temperature Combustion Synthesis and Characterization of Ce1-xPrxO2-δ Solid Solutions

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-δ 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,σ600℃=2.45 × 10-3 S/cm,was found for the composition of x=0.15.

关键词： Nanocrystalline powders Solid electrolyte Combustion synthesis Cerium oxide

作者: Cheng Peng Zhen Zhang Donglin Huang Yanli Liu

作者单位: College of Chemistry,South China University of Technology,Guangzhou 510640,China College of Materials Science and Engineering,Hunan University,Changsha 410082,China

会议类型: 国际会议

会议名称: The Fifth China International Conference on High-Performance Ceramics (第五届先进陶瓷国际研讨会(CICC-5))

会议地点: 长沙

会议语种:英文

页码: 253-255

在线出版日期: 2007-05-10（万方平台首次上网日期，不代表论文的发表时间）