Raman Spectroscopic Study of Molten Salt Electrolysis of Light Metals

摘要

Production of aluminum and magnesium by electrolysis of molten salts is studied with Raman spectroscopy. The I.G. process and aluminum chloride alkali chloride process were selected for the study. By measuring Raman spectra for the pure molten MgCl sub 2 it was confirmed that the experimental set-up is correct. Magnesium and aluminum were confirmed to exist in their electrolyte melts as tetrahedrally coordinated species. Raman spectra for MgCl sub 2 and AlCl sub 3 during electrolysis showed that it can be used as a reference for concentration change. Some result for the AlCl sub 3 electrolysis gave a clue to the problem of the occurrence of new species. (ERA citation 10:049284)