Redox potential of Mo(VI)/Mo in alkali borate melts

Takuya Nakanishi, Hideki Maekawa, Toshio Yokokawa

研究成果: Article

6 被引用数 (Scopus)

抄録

The redox potential of molybdenum oxides in alkali borate melts was studied using the cyclic voltammetry. In the Na 2O-B 2O 3 melts, where the Na 2O activity had been previously measured and the basicity was defined as pO= -log a (Na 2O), the redox potential corresponding to Mo(VI)/Mo shifted to the positive side as the melts became more acidic, linearly depending on the basicity of the solvent melts. We succeeded in quantitatively interpreting this behavior from a thermodynamic viewpoint. In other alkali borate melts, R 2O-B 2O 3 (R=Li, K and Cs), the redox potential shifted to the negative side when alkali was exchanged from lithium and potassium to cesium at the same composition. It is shown that the redox potential of Mo(VI)/Mo can be applicable to determine the basicity in high temperature melts in general.

元の言語English
ページ(範囲)399-403
ページ数5
ジャーナルmaterials transactions, jim
39
発行部数3
出版物ステータスPublished - 1998 3
外部発表Yes

ASJC Scopus subject areas

  • Engineering(all)

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