, Volume 43, Issue 6, pp 1241-1242
Date: 08 Nov 2012

A Novel Method for Investigating Solutions of Aluminum in Molten Cryolite

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In chronopotentiometric work on Fe2+ in a cryolite melt (Jentoftsen et al. in Metall. Mater. Trans. B, 2012, vol. 43B, pp. 869–74), after depletion of Fe2+ at the surface of the iron cathode was complete, continuing electrolysis produced a solution of Al in cryolite, provided that the time was less than a few hundred milliseconds. Potential–time curves indicate a diffusion-controlled, 2-electron reduction to form monovalent aluminum.

Manuscript submitted June 4, 2012.