Journal of thermal analysis

, Volume 49, Issue 3, pp 1255–1261 | Cite as

Synthesis of Nd-doped barium cerate proton conductor from oxalate coprecipitate precursor

  • F. L. Chen
  • O. T. Sørensen
  • G. Y. Meng
  • D. K. Peng
Inorganic Compounds

Abstract

The decomposition process of barium, cerium and neodymium oxalates in air was investigated by DTA-TG. Decomposition of an oxalate coprecipitate precursor and formation of barium cerate were examined in air, N2 and CO2 atmospheres, respectively, by employing DTA-TG and XRD. The results showed that, in air, cerium oxalate could easily be decomposed to CeO2 below 350°C and Nd2O3 could be obtained at 670°C, while a high temperature of >1400°C was needed to obtain BaO. Although some amount of BaCeO3 was formed at 500°C in air, at 650°C in N2 and at 800°C in CO2, single perovskite phase of BaCeO3 could only be obtained at a much higher temperature.

Keywords

barium cerate oxalate coprecipitation proton conductor synthesis 

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Copyright information

© Akadémiai Kiadó 1997

Authors and Affiliations

  • F. L. Chen
    • 1
  • O. T. Sørensen
    • 2
  • G. Y. Meng
    • 1
  • D. K. Peng
    • 1
  1. 1.Department of Materials Science and EngineeringUniversity of Science and Technology of ChinaAnhuiP. R.China
  2. 2.Materials DepartmentRisø National LaboratoryRoskildeDenmark

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