Voltammetric studies on the redox behaviour of Cr, Mn, Cu, Sb and As ions in Na2O-B2O3 melts

Keita Suzumura, Katsuyuki Kawamura, Toshio Yokokawa

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Abstract

The redox behaviour of Cr, Mn, Cu, Sb and As ions in Na2O-B2O3 melts has been studied using cyclic voltammetry, in which Cr6+/Cr3+, Mn3+/Mn2+, Cu2+/Cu+/Cu0, Sb5+/Sb3+/Sb0, and As5+/As3+/As0 redox reactions were observed. The relations between redox equilibria and the basicity of the solvent melts, i.e. an analogue of the Pourbaix diagram, are presented. The diffusion coefficients of Cr6+, Mn3+, Cu2+ and Sb5+ and the temperature dependences were evaluated.

Original languageEnglish
Pages (from-to)307-312
Number of pages6
JournalJournal of the Chemical Society, Faraday Transactions
Volume87
Issue number2
DOIs
Publication statusPublished - Dec 1 1991

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ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

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