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


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.


barium cerate oxalate coprecipitation proton conductor synthesis 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    H. T. Esaha, H. Iwahara and N. Maeda, Solid State Ionics, 3/4 (1981) 359.CrossRefGoogle Scholar
  2. 2.
    H. Iwahara, H. Uchida, K. Ono and K. Ogaki, J. Electrochem. Soc., 135 (1988) 529.CrossRefGoogle Scholar
  3. 3.
    N. Bonanos, J. Phys. Chem. Solids, 54 (1993) 867.CrossRefGoogle Scholar
  4. 4.
    H. Iwahara, Solid State Ionics, 77 (1995) 289.CrossRefGoogle Scholar
  5. 5.
    H. Iwahara, H. Uchida and K. Morimoto, J. Electrochem. Soc., 137 (1990) 462.CrossRefGoogle Scholar
  6. 6.
    C.-H. Lu and L. C. De Jonghe, J. Am. Ceram. Soc., 77 (1994) 2523.CrossRefGoogle Scholar
  7. 7.
    B. T. Kilbourn, A Lanthanide Lanthology-Part I, Molycorp, USA, 1993, p. 27.Google Scholar
  8. 8.
    S. D. Flint and R. C. T. Slade, Solid State Ionics, 77 (1995) 215.CrossRefGoogle Scholar
  9. 9.
    M. J. Scholten, J. Schoonman, J. C. van Miltenburg and H. A. J. Oonk, Solid State Ionics, 61 (1993) 83.CrossRefGoogle Scholar
  10. 10.
    S. Gopalan and A. V. Virkar, J. Electrochem. Soc., 140 (1993) 1060.CrossRefGoogle Scholar
  11. 11.
    H. J. Schmutzler, K. H. Sandhage and J. C. Nava, J. Am. Ceram. Soc., 79 (1996) 1575.CrossRefGoogle Scholar
  12. 12.
    F. L. Chen, O. T. Sørensen, G. Y. Meng and D. K. Peng, to be published.Google Scholar
  13. 13.
    M. J. Scholten, J. Schoonman, J. C. van Miltenburg and E. H. P. Cordfunke, Thermochim. Acta, 268 (1995) 161.CrossRefGoogle Scholar

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

Personalised recommendations