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Electro-deoxidation of V2O3 in molten CaCl2-NaCl-CaO

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Abstract

The electro-deoxidation of V2O3 precursors was studied. Experiments were carried out with a two-terminal electrochemical cell, which was comprised of a molten electrolyte of CaCl2 and NaCl with additions of CaO, a cathode of compact V2O3, and a graphite anode under the potential of 3.0 V at 1173 K. The phase constitution and composition as well as the morphology of the samples were studied by X-ray diffraction (XRD) and scanning electron microscopy (SEM). 3 g of V2O3 could be converted to vanadium metal powder within the processing time of 8 h. The kinetic pathway was investigated by analyzing the product phase in samples prepared at different reduction stages. CaO added in the reduction path of V2O3 formed the intermediate product CaV2O4.

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Authors and Affiliations

  1. School of Science, Northeastern University, Shenyang, 110004, China

    Shu-lan Wang, Shi-chao Li, Long-fei Wan & Chuan-hua Wang

Authors
  1. Shu-lan Wang
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  2. Shi-chao Li
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  3. Long-fei Wan
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  4. Chuan-hua Wang
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Correspondence to Shu-lan Wang.

Additional information

This work was financially supported by the National Natural Science Foundation of China (Nos.51154002 and 50834001) and Panzhihua New Steel and Vanadium Co. Ltd.

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Wang, Sl., Li, Sc., Wan, Lf. et al. Electro-deoxidation of V2O3 in molten CaCl2-NaCl-CaO. Int J Miner Metall Mater 19, 212–216 (2012). https://doi.org/10.1007/s12613-012-0540-3

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  • DOI: https://doi.org/10.1007/s12613-012-0540-3

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