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Mass transport in supported zinc halide solutions—I. Effective diffusivities of zinc

✍ Scribed by W.C. Hsie; M.L. Gopikanth; J.R. Selman

Publisher
Elsevier Science
Year
1985
Tongue
English
Weight
663 KB
Volume
30
Category
Article
ISSN
0013-4686

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✦ Synopsis

Ahskract

-The effective diffusivity of zinc in concentrated zinc halide solutions has been determined from polarographic limiting current measurements. The experimental technique used yields well-defined limiting current plateaux even in highly concentrated solutions. The diffusivities of zinc caiculated, using the Kouteckyequation, from measurements in &Cl, and ZnBr, solutions ofconcentration 0.01-3 M, with 3 M KCI supporting electrolyte, show little effect of the anion but decrease strongJy with increasing zinc concentration. A slight effect of pH suggests that hydrogen-containing zinc complexes may be involved in the discharge process at low pH.

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