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Formation of Calcium Titanate During Electroreduction of TiO2 in Molten CaCl2 Bath

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Abstract

The direct electrochemical reduction of a TiO2 cathode in a molten CaCl2 bath to produce titanium metal invariably results in the formation of CaTiO3 as an intermediate product. To obtain even more insight into the formation of CaTiO3, experiments are performed in open-circuit conditions as well as at a cell voltage of 2 V for different time periods. In this study, we examine the conversion of TiO2 to CaTiO3 in the molten CaCl2 bath. Prolonged electrolysis experiments are conducted and the newly transformed phases are analyzed using X-ray diffraction (XRD). The formation of CaTiO3 and its subsequent transformation to different species during reduction is discussed. An approach for preparing CaTiO3 chemically by treating the TiO2 electrode in CaCl2 bath and subsequently reducing it by electrochemical means to produce titanium metal has been proposed.

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Acknowledgment

The authors acknowledge with thanks the support received from the Defense Research and Development Organisation (DRDO), Government of India, New Delhi, in the form of a project grant to conduct this work.

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Authors and Affiliations

  1. Institute of Minerals and Materials Technology, Council of Scientific and Industrial Research, Bhubaneswar, 751013, India

    Jayashree Mohanty (Senior Research Fellow), Raja Kishore Paramguru (Scientist H (Director’s Grade Scientist) & Barada Kanta Mishra (Director)

  2. Chemistry Wing, School of Applied Sciences, KIIT University, Bhubaneswar, 751024, India

    Krushna Gopal Mishra (Professor)

Authors
  1. Jayashree Mohanty
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  2. Krushna Gopal Mishra
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  3. Raja Kishore Paramguru
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  4. Barada Kanta Mishra
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Corresponding author

Correspondence to Krushna Gopal Mishra.

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Manuscript submitted February 10, 2011.

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Mohanty, J., Mishra, K.G., Paramguru, R.K. et al. Formation of Calcium Titanate During Electroreduction of TiO2 in Molten CaCl2 Bath. Metall Mater Trans B 43, 513–518 (2012). https://doi.org/10.1007/s11663-011-9625-z

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