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Journal of Thermal Analysis and Calorimetry

, Volume 138, Issue 5, pp 3571–3575 | Cite as

Thermal decomposition of carbonated lanthanum hydroxide

  • Elena Haibel
  • Ekkehard Füglein
  • Anne S. Schulze
  • Dirk WalterEmail author
Article
  • 44 Downloads

Abstract

The aim of this study was to research the influence of carbonate species on the thermal decomposition of lanthanum oxide compounds. To obtain adequate carbonate fractions, pure lanthanum hydroxide and oxide, respectively, were stored in a humid carbon dioxide atmosphere. In the process, lanthanum oxide converts within 24 h to lanthanum hydroxide because of its high affinity to water. Furthermore lanthanum hydroxide has the tendency to form carbonates, due to their basic character. By means of the results of TG-FTIR and TEM, a simplified model could be derived; the thermal decomposition of carbonated lanthanum hydroxide consists of two interfering reactions: The first reaction is the thermal decomposition of lanthanum hydroxide, and the second reaction is the thermal decomposition of lanthanum hydroxide carbonate.

Keywords

Lanthanum hydroxide Lanthanum oxide Carbonate impurities TG-FTIR TEM 

Notes

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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2019

Authors and Affiliations

  • Elena Haibel
    • 1
  • Ekkehard Füglein
    • 2
  • Anne S. Schulze
    • 1
  • Dirk Walter
    • 1
    • 3
    Email author
  1. 1.Gefahrstofflaboratorien Chemie und Physik am Institut für ArbeitsmedizinJustus-Liebig-UniversitätGiessenGermany
  2. 2.NETZSCH-Gerätebau GmbHSelbGermany
  3. 3.Institut für Anorganische und Analytische ChemieJustus-Liebig-UniversitätGiessenGermany

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