Sodium sulfate mixed with rare earth sulfates(Ln=Y and Gd) and silicon dioxide as a solid electrolyte for a sulfur dioxide detector.

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  • Imanaka Nobuhito
    Department of Applied Chemistry, Faculty of Engineering, Osaka University
  • Yamaguchi Yasuo
    Department of Applied Chemistry, Faculty of Engineering, Osaka University
  • Adachi Gin-ya
    Department of Applied Chemistry, Faculty of Engineering, Osaka University
  • Shiokawa Jiro
    Department of Applied Chemistry, Faculty of Engineering, Osaka University

抄録

Sodium sulfate mixed with rare earth sulfates(Ln=Y and Gd) and silicon dioxide exhibits a Na2SO4-I-like phase as well as a small amount of silicon dioxide phase. The former phase is excellent in Na+ ion conduction. The electrical conductivity of the Na2SO4–Ln2(SO4)3–SiO2(Ln=Y and Gd) systems is considerably higher than that of pure sodium sulfate. When the Na2SO4–Ln2(SO4)3–SiO2(Ln=Y and Gd) sample is applied as a solid electrolyte for a SO2 gas concentration cell, the measured EMF is in good agreement with the calculated EMF for a SO2 gas concentration range from 0.1% (1000 ppm) to 23%, and 0.32% (3200 ppm) to 10%, respectively.

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