Phase Equilibria and Thermodynamic Properties in the V<I><SUB>n</SUB></I>O<SUB>2<I>n</I>&minus;1</SUB> System

• Okinaka H.

  Department of Chemistry, Faculty of Science, Kyoto University

• Kosuge K.

  Department of Chemistry, Faculty of Science, Kyoto University

• Kachi S.

  Department of Chemistry, Faculty of Science, Kyoto University

書誌事項

タイトル別名

• Phase Equilibria and Thermodynamic Properties in the V<I><SUB>n</SUB></I>O<SUB>2<I>n</I>−1</SUB> System

抄録

The phase equilibria of the V₂O₃–VO₂ system in connection with the oxygen activity were established in the temperature range from 600° to 1200°C. A quenching method was applied to the experiments from 1000° to 1200°C under controlled oxygen atmosphere with the use of a CO₂–H₂ gas mixture. For the temperature range from 600° to 1000°C, a solid electrolyte cell of the type; Pt/adjacent two-phase mixture (V_nO_2n−1+V_n+1O_2(n+1)−1)/(ZrO₂)_0.85(CaO)_0.15/O₂ (air reference electrode)/Pt, was utilized to measure the oxygen activity. The standard free energy changes of the reactions (n+1)V_nO_2n−1+1⁄2O₂\ ightleftarrowsnV_n+1O_2(n+1)−1 were calculated from the electromotive force developed by the cell.

収録刊行物

• Transactions of the Japan Institute of Metals

  Transactions of the Japan Institute of Metals 12 (1), 44-48, 1971

  社団法人 日本金属学会

キーワード

• General Engineering

詳細情報

• CRID: 1390001205117255168
• NII論文ID: 130003485066
• DOI: 10.2320/matertrans1960.12.44
• COI: 1:CAS:528:DyaE3MXhtlWjsbs%3D
• ISSN: 24324701
• ISSN: 00214434
• Web Site: https://www.jstage.jst.go.jp/article/matertrans1960/12/1/12_1_44/_pdf
• 本文言語コード: en
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