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Calciumβ″-alumina and Nasicon electrolytes in galvanic cells with solid reference electrodes for detection of sulphur oxides in gases

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Abstract

Calcium-β″-alumina and Nasicon were applied as solid electrolytes for SO x (x=2 or 3) gas detection. The following two galvanic cells with solid reference electrodes were assembled

$$\begin{gathered} Pt|O_2 ,CaO||Ca - \beta '' - Al_2 O_3 ||CaSO_4 |SO_3 ,SO_2 ,O_2 |Pt \hfill \\ Pt|O_2 ,Na_2 O||Nasicon||Na_2 SO_4 |SO_3 ,SO_2 ,O_2 |Pt \hfill \\ \end{gathered} $$

Calcium and sodium sulphates were used as auxiliary electrolytes to provide protection of β″-Al2O3 or Nasicon electrolytes from chemical reaction with SO2. The e.m.f. was measured in the temperature range 850–1070 K for five various test gases. The measured e.m.f.s had values a little lower than the calculated ones. The results show clearly that both the cells can act as SO x electrochemical sensors for temperatures not exceeding 1070 K.

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Authors and Affiliations

  1. Institute of Materials Engineering, Academy of Mining and Metallurgy, 30059, Kraków, Poland

    G. Róg, A. Kozłowska-Róg & K. Zakuła

  2. Institute of Physics, Warsaw University of Technology, 02525, Warszawa, Poland

    W. Bogusz

  3. Sulfur Industry Development Research Center, “Siarkopol”, 39405, Tarnobrzeg, Poland

    W. Pycior

Authors
  1. G. Róg
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  2. A. Kozłowska-Róg
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  3. K. Zakuła
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  4. W. Bogusz
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  5. W. Pycior
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Róg, G., Kozłowska-Róg, A., Zakuła, K. et al. Calciumβ″-alumina and Nasicon electrolytes in galvanic cells with solid reference electrodes for detection of sulphur oxides in gases. J Appl Electrochem 21, 308–312 (1991). https://doi.org/10.1007/BF01020213

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  • DOI: https://doi.org/10.1007/BF01020213

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