Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Hydrogen Permeance of Ce1-xYxO2-δ Membranes According to Yttrium Content

  • Song, Da-Heoi (School of Biological Sciences and Chemistry / Institute of Basic science, Sungshin Women's University) ;
  • Jung, Mie-Won (School of Biological Sciences and Chemistry / Institute of Basic science, Sungshin Women's University)
  • Received : 2013.10.01
  • Accepted : 2013.11.16
  • Published : 2013.11.30
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Abstract

Porous ceramic membranes consisting of $Ce_{1-x}Y_xO_{2-{\delta}}$ were developed for hydrogen permeation tests. Various amounts (x = 0, 0.05, 0.1, 0.2) of yttrium were doped to ceria to study the effect of yttrium doping on ceria membranes on various properties, including hydrogen permeability. $Ce_{1-x}Y_xO_{2-{\delta}}$ powder was synthesized by the sol-gel method. These membranes were fabricated by pressing and sintering at $1300^{\circ}C$ for 6 h. As the amount of yttrium increased, the grain size of the membrane decreased. Hydrogen permeability was improved as the yttrium content increased. Selective permeability of hydrogen compared to CO is explained by electric conductivity. As the temperature rose, both the hydrogen perm-selectivity and electric conductivity on $Ce_{0.8}Y_{0.2}O_{1.9}$ improved.

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References

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