Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Synthesis and Application of $CeO_2-Sm_2O_3$ Solid Electrolyte Membranes with Electronic and Ionic Conductivities

전자 및 이온 전도성 $CeO_2-Sm_2O_3$ 고체 전해질 막의 합성 및 응용

  • 현상훈 (연세대학교 세라믹공학과) ;
  • 권재환 (연세대학교 세라믹공학과) ;
  • 김승구 (연세대학교 세라믹공학) ;
  • 김계태 (연세대학교 세라믹공학과)
  • Published : 1998.04.01
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Abstract

The oxygen flux of SDC ($Sm_2O_3\;doped\;CeO_2$) solid electrolyte membranes with electronic and oxygen ion-ic conductivities has been investigated as a basic research in order to develop the conversion process of na-tural gas to syngas using the ceramic membrane reactor. Tube type membranes(1 mm thickness) were fa-bricated by slip casting of SDC powders prepared by the oxalate coprecipitaion method. Dense oxygen per-meation membranes(0.1 mm thickness) could be synthesized via sintering at $1450^{\circ}C$ for 2h and their re-lative density was over 95% The oxygen flux through SDC membranes doped 20mol% $Sm_15$ was about $1.13{\times}10^{-5}\;mol/m_2{\cdot}sec$ at low temperature around $800^{\circ}C$. In addition the SDC membranes showed a good thermaal stability for a long period of service.

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References

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