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Toward Optimisation of Electrolytic Reduction of Solid Chromium Oxide to Chromium Powder in Molten Chloride Salts by Elena Gordo; George Z. Chen; Derek J. Fray is a Engineering article available to read on EtoBox.

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Electrochemical reduction of solid Cr 2 O 3 , in the form of an assembled cathode of porous pellets attached to a current collector, to chromium powder was investigated in molten CaCl 2 and a molten equimolar mixture of CaCl 2 and NaCl. The study focused on the influence of pellets preparation conditions, cell voltages and temperatures on the reduction process. Analyses were reported of the characteristics of the current-time plots of the constant voltage electrolysis under different conditions, cyclic voltammograms of solid Cr 2 O 3 in the molten equimolar mixture of CaCl 2 and NaCl, the microstructures and elemental compositions of the reduced pellets. Particularly, attention was given to the intermediate product of the electrolysis, calcium chromites of various stoichiometries, aiming to achieve a better understanding and optimisation of the reduction process.

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Author

Elena Gordo; George Z. Chen; Derek J. Fray

Publisher

Elsevier Science; Elsevier ; Elsevier Ltd.; Elsevier BV (ISSN 0013-4686)

Published

2004

Language

EN

Field

Engineering (Physical Sciences)