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<p>A recent publication by Shoghi and Shahverdi (JOM 77:3125–3138, 2025) claims to have achieved exceptional current efficiencies of up to 76.6% within a processing time of as little as 4&#xa0;h for the conversion of TiO<sub>2</sub> to Ti metal using the FFC-Cambridge electro-deoxidation process in a molten CaCl<sub>2</sub> electrolyte. In view of the prior literature on the electro-deoxidation of TiO<sub>2</sub>, such a result would be a genuine advance and highly relevant to the further development of the process towards commercialization. The present article, therefore, subjects the study by Shoghi and Shahverdi to a thorough evaluation. Therein, it will be made evident that the purported results have probably not been attained. It will also be demonstrated that there are inconsistencies in the interpretation of the reaction path, as well as several other misconceptions.</p>

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Comment on the Article ‘‘Highly Efficient Titanium Powder Production via Electro-Reduction of TiO2 in Commercial CaCl2 Molten Salt: Mechanism and Optimization Investigation’’ by A. Shoghi and H.R. Shahverdi

  • 期刊论文

  • 发表日期：

    2026年2月23日

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  • Carsten Schwandt

摘要

A recent publication by Shoghi and Shahverdi (JOM 77:3125–3138, 2025) claims to have achieved exceptional current efficiencies of up to 76.6% within a processing time of as little as 4 h for the conversion of TiO2 to Ti metal using the FFC-Cambridge electro-deoxidation process in a molten CaCl2 electrolyte. In view of the prior literature on the electro-deoxidation of TiO2, such a result would be a genuine advance and highly relevant to the further development of the process towards commercialization. The present article, therefore, subjects the study by Shoghi and Shahverdi to a thorough evaluation. Therein, it will be made evident that the purported results have probably not been attained. It will also be demonstrated that there are inconsistencies in the interpretation of the reaction path, as well as several other misconceptions.