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Quantitative Analysis of Phases Formed During The Oxidation of Covellite (CuS)

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Abstract

A sample of covellite of particle size 45–90 µm was heated in air at 20°C min–1 in a simultaneous TG-DTA apparatus. The phase compositions of the products at various temperatures were determined quantitatively by XRD and FTIR. By 500°C, 5.8% of Cu2 O had formed, and this increased to a maximum of 44.8% at 585°C after which it decreased to zero by 750°C. 10% of CuO had formed by 680°C, and then steadily increased to 83.6% at 1000°C. 5.9% of CuO⋅CuSO4 was found at 610°C, and increased to a maximum value of 79% after which it decomposed completely by 820°C.

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Authors and Affiliations

  1. School of Applied Chemistry, Curtin University, Perth, Western Australia, Australia

    J. G. Dunn

  2. Bindura University of Science Education, Zimbabwe

    C. Muzenda

Authors
  1. J. G. Dunn
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  2. C. Muzenda
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Dunn, J.G., Muzenda, C. Quantitative Analysis of Phases Formed During The Oxidation of Covellite (CuS). Journal of Thermal Analysis and Calorimetry 64, 1241–1246 (2001). https://doi.org/10.1023/A:1011513616930

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  • DOI: https://doi.org/10.1023/A:1011513616930

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