Electrolysis of Molten Iron Oxide with an Iridium Anode: The Role of Electrolyte Basicity
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Allanore_Electrolysis of molten.pdf
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1.16 MB
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Author(s)
Kim, Hojong
Paramore, James
Allanore, Antoine
Sadoway, Donald Robert
Date Issued
August 2011
Journal
Journal of The Electrochemical Society
Publisher
Electrochemical Society
Citation
Kim, Hojong, James Paramore, Antoine Allanore, and Donald R. Sadoway. Electrolysis of Molten Iron Oxide with an Iridium Anode: The Role of Electrolyte Basicity. Journal of The Electrochemical Society 158, no. 10 (2011): E101.© 2011 ECS - The Electrochemical Society.
Version
Final published version
Abstract
Molten oxide electrolysis (MOE) is a carbon-free, electrochemical technique to decompose a metal oxide directly into liquid metal and oxygen gas. From an environmental perspective what makes MOE attractive is its ability to extract metal without generating greenhouse gases. Hence, an inert anode capable of sustained oxygen evolution is a critical enabling component for the technology. To this end, iridium has been evaluated in ironmaking cells operated with two different electrolytes. The basicity of the electrolyte has been found to have a dramatic effect on the stability of the iridium anode. The rate of iridium loss in an acidic melt with high silica content has been measured to be much less than that in a basic melt with high calcia content.
MIT Department
Massachusetts Institute of Technology. Department of Materials Science and Engineering
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1149/1.3623446
