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Journal of Thermal Analysis and Calorimetry

, Volume 112, Issue 2, pp 851–857 | Cite as

Thermal decomposition of the oxo-diperoxo-molibdenum (VI)-potassium oxalate

  • Dorina-Rodica Chambré
  • Adina-Maria Bodescu
  • Cecilia Sîrghie
Article

Abstract

The oxo-diperoxo-molibdenum(VI)-potassium oxalate, K2[MoO(O2)2(C2O4)] was synthesized using an adapted version of the method suggested by Dengel. The thermal behavior of the synthesized complex was investigated by simultaneous thermal analysis TG/DTG/DTA, in air or nitrogen atmosphere, to identify and characterize the mass-loss decomposition processes. In addition, for the characterization of the observed decomposition steps, the FT-IR spectra for the initial complex, evolved gaseous compounds and isolated complex at 230 and 430/383 °C in air/nitrogen atmosphere, were recorded. On the 35–500 °C temperature range, the K2[MoO(O2)2(C2O4)] complex presented three main decomposition steps, accompanied by mass-loss. The first degradation step is due to the elimination of one oxygen molecule, by the breaking of the peroxo groups, with the formation of an intermediary, like [MoO3L]. The other two degradation steps can be attributed to the decomposition of the organic ligand, with the final formation of a stable metallic oxide.

Keywords

Oxo-diperoxo-molibdenum(VI)-potassium oxalate Synthesis Thermal decomposition TG/DTG/DTA analysis FT-IR spectra 

Notes

Acknowledgements

This research work was supported by “Bast plants—Renewable Strategic Resources for European Economy”—“BASTEURES” project, No. 210/2010 POS-CCE—supported by Structural Founds—Investment in Your Future.

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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2012

Authors and Affiliations

  • Dorina-Rodica Chambré
    • 1
  • Adina-Maria Bodescu
    • 2
  • Cecilia Sîrghie
    • 1
  1. 1.Research Development Innovation in Natural and Technical Sciences, Institute of “Aurel Vlaicu” UniversityAradRomania
  2. 2.Faculty of Food Engineering, Tourism and Environmental Protection“Aurel Vlaicu” UniversityAradRomania

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