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Characteristics of Oxygen Permeation on $YBaCo_2O_{5+{\delta}}$ Ceramic Membrane  

Pyo, Dae-Woong (Greenhouse Gas Research Center, Climate Change Technology Research Division, Korea Institute of Energy Research)
Kim, Jong-Pyo (Greenhouse Gas Research Center, Climate Change Technology Research Division, Korea Institute of Energy Research)
Park, Jung-Hoon (Greenhouse Gas Research Center, Climate Change Technology Research Division, Korea Institute of Energy Research)
Publication Information
Membrane Journal / v.22, no.2, 2012 , pp. 113-119 More about this Journal
Abstract
$YBaCo_2O_{5+{\delta}}$ oxide was synthesized by solid state reaction and a typical dense membrane has been prepared using as-prepared powder by unilateral pressing and sintering at $1,180^{\circ}C$. The $YBaCo_2O_{5+{\delta}}$ membraneswas analyzed by X-ray diffraction (XRD) and scanning electron microscope (SEM). XRD analysis showed the double layered perovskite structure was observed over $1,150^{\circ}C$ without impurities. Oxygen permeation was measured in the temperature range from 750 to $950^{\circ}C$ according to oxygen partial pressure difference between feed and permeation side. The oxygen permeation flux increased with increasing temperature and oxygen partial pressure and the maximum oxygen flux of $YBaCo_2O_{5+{\delta}}$ membrane with 1.0 mm thickness was about 0.15 mL/$cm^2{\cdot}min$ at $950^{\circ}C$ and $PO_2$ = 0.42 atm. The activation energy for oxygen permeation decreased with decreasing oxygen partial pressure to be 76.0 kJ/mol at the condition of $PO_2$ = 0.21 atm.
Keywords
oxygen separation; ceramic membrane; $YBaCo_2O_{5+{\delta}}$; doublelayered perovskite;
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Times Cited By KSCI : 3  (Citation Analysis)
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