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Preparation and Oxygen Permeability of Nb-doped BCFN Ceramic Membrane  

Kim, Jong-Pyo (Department of Chemical Engineering, Chungnam National University)
Son, Sou-Hwan (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)
Lee, Yong-Taek (Department of Chemical Engineering, Chungnam National University)
Publication Information
Membrane Journal / v.21, no.1, 2011 , pp. 55-61 More about this Journal
Abstract
$BaCo_{0.7}Fe_{0.22}Nb_{0.08}O_{3-{\delta}}$ oxide was synthesized by solid state reaction method. Dense ceramic membrane was prepared using as-prepared powder by pressing and sintering at $1,200^{\circ}C$. XRD result of membrane showed single perovskite structure. Leakage and oxygen permeation test were conducted on the membrane sealed by glass ring as a sealing material. The oxygen permeation flux increased with increasing temperature and pressure difference and maximum oxygen permeation flux was $2.3mL/min{\cdot}cm^2$ at $950^{\circ}C$ with $Po_2$ = 0.63 atm of oxygen partial pressure. The oxygen permeation in the condition of air with $CO_2$ (300 ppm) as feed stream decreased as much as only maximum 2.9% in comparison with air feed stream. It indicated $BaCo_{0.7}Fe_{0.22}Nb_{0.08}O_{3-{\delta}}$ membrane is more stable than another membrane for carbon dioxide.
Keywords
oxygen separation; ceramic membrane; $BaCo_{0.7}Fe_{0.22}Nb_{0.08}O_{3-{\delta}}$; perovskite;
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Times Cited By KSCI : 3  (Citation Analysis)
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