Journal of Thermal Analysis and Calorimetry

, Volume 88, Issue 1, pp 71–76

Thermal behaviour of CuS (covellite) obtained from copper–thiosulfate system

  • Claudia Maria Simonescu
  • V. S. Teodorescu
  • Oana Carp
  • Luminita Patron
  • Camelia Capatina
regular

Abstract

Thermal behaviour of CuS (covellite) obtained from the Cu(CH3COO)2·H2O and Na2S2O3·5H2O system, working at different molar ratio (1:6 and 1:4) in presence/absence of NH4VO3, was studied. It was established that the presence of vanadium in the system induces a densification of CuS nodules, but do not change the hexagonal CuS structure. It has an important influence in thermal behaviour of copper sulfide CuS obtained also. The morphological characteristics of CuS play an important role in the thermal stability and the stoichiometry of the thermal decompositions.

Also, the possibility to obtain copper sulfides with greater cooper content was investigated.

Keywords

copper sulfide thermal oxidation 

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Copyright information

© Springer-Verlag 2007

Authors and Affiliations

  • Claudia Maria Simonescu
    • 1
  • V. S. Teodorescu
    • 2
  • Oana Carp
    • 3
  • Luminita Patron
    • 3
  • Camelia Capatina
    • 4
  1. 1.Department of Inorganic Technology and Environmental Protection, Faculty of Applied Chemistry and Materials ScienceUniversity ‘Politehnica’ of BucharestBucharestRomania
  2. 2.National Institute for Material PhysicsBucharest-MagureleRomania
  3. 3.Institute of Physical and Chemical ‘Ilie Murgulescu’BucharestRomania
  4. 4.Department of Environmental EngineeringUniversity ‘Constantin Brancusi’Targu-JiuRomania

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