Thermal decomposition of yttrium(III) hexanoate in argon

Jean-Claude Grivel, Maria Josefina Suarez Guevara, Fahmida Attique, Y. Zhao, X. Tang, Pallewatta G A P Pallewatta, A. Watenphul, M.V. Zimmermann

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

The thermal decomposition of yttrium(III) hexanoate (Y(C5H11CO2)3)·xH2O in argon was studied by means of thermogravimetry, differential thermal analysis, IR-spectroscopy, X-ray diffraction at a laboratory Cu-tube source and in-situ experiments at a synchrotron radiation source as well as hot-stage optical microscopy. Dehydration occurs between 40°C and 110°C and is accompanied by a transition from solid to liquid crystalline state. At the onset of the main decomposition stage of the anhydrous Y(C5H11CO2)3, solidification takes place in the 315-335°C range. Y(C5H11CO2)3 decomposes in a single step into Y2O2CO3 with release of CO2 and 6-undecanone between 280°C and 490°C. A side reaction appears to yield elemental carbon and volatile decane (C10H22). Y2O2CO3 is converted to Y2O3 with release of CO2 between 500°C and 975°C.
Original languageEnglish
JournalJournal of Analytical and Applied Pyrolysis
Volume112
Pages (from-to)237–243
ISSN0165-2370
DOIs
Publication statusPublished - 2015

Keywords

  • Alkanoates
  • FTIR
  • Simultaneous TG-DTA
  • Thermal decomposition
  • Yttrium hexanoate
  • Carbon dioxide
  • Crystalline materials
  • Decomposition
  • Differential thermal analysis
  • Fourier transform infrared spectroscopy
  • Pyrolysis
  • Synchrotron radiation
  • Thermoanalysis
  • Thermogravimetric analysis
  • X ray diffraction
  • Yttrium
  • Elemental carbon
  • Hexanoate
  • In-situ experiments
  • Liquid crystalline state
  • Synchrotron radiation source
  • Yttrium alloys

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