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Electrochemical Reduction of Indium (III) in Molten Lithium Chloride - Potassium Chloride Eutectic

B. N. Popov ; Faculty of Technology and Metallurgy, University »Kiril and Metodij«, Skopje, Yugoslavia
J. V. Ivshin ; Chemical and Technological Institute, »S. M. Kirov«, Kazan, USSR


Puni tekst: engleski pdf 4.243 Kb

str. 315-324

preuzimanja: 318

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Sažetak

The dependence of indium electrode potential vs. log. concentration
of indium (III) is linear and the slopes determined are comparable with the slopes calculated from the Nernst equation, assuming n = 3. The potential of In/ln(III) has been determined to be 0.805 ± 0.003 V with respect to Pt/PtC12 (1 M). At 693 K the free energy of formation of the indium(III) chloride in a 1 M solution is -325, 398 ± 500 JImo!.
Asingle chronopotentiometric wave is observed for the reduction
of InC13 at -0.81 V vs the Pt(II)/Pt reference electrode. Based on analytical data n = 3, the diffusion coefficient was calculated to be 1.81 X lO-s cm- S-l. The values of a na and kOf•h were calculated to be 0.6 and 3.25 X 10-3 cm S-l. Chronopotentiometry showed one step for the reduction of In 203. The quarter wave potential was found to be -0.7 V vs. the Pt(II)/Pt reference electrode. The reduction was found not to be a diffusion controlled process over the time interval investigated. It was shown that In203 is not stable in the melt ann
enters in an acid-base reaction with the chloride melt.

Ključne riječi

Hrčak ID:

176361

URI

https://hrcak.srce.hr/176361

Datum izdavanja:

25.6.1987.

Posjeta: 666 *