ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Diffusion of cobalt(II) ions in molten sulfates of alkali metals

J. Leško

Department of Chemistry, Institute of Mining and Metallurgy, 708 33 Ostrava

Abstract:  The diffusion coefficient of cobalt(II) ions and their activation energy were determined using chronopotentiometry in the temperature interval 873—983 K, in molten ternary eutectic mixture Li₂S0₄ —Na₂S0₄ —K₂S0₄ (78.0: 8.5:13.5 mole %) as well as in the mixture Li₂S0₄—K₂S0₄ (86.4:13.6 mole % ) . On the basis of diffusion measurements in these sulfate melts it can be concluded that in the mentioned temperature interval the complex particles Co(II) do not undergo any change either with the concentration or with the kind of alkali cations. This is in a good agreement with literature spectroscopic data on Co(II) in molten alkali sulfates.

Full paper in Portable Document Format: 326a793.pdf

Chemical Papers 32 (6) 793–797 (1978)