A dense membrane of perovskite Ba0.5Sr0.5Co0.8Fe0.2O3−δ was successfully prepared

by polymerized complex method. Oxygen permeation according to carbon dioxide

concentrations was measured in the oxygen partial pressure range of 2.1 x 10−3 at

about 0.63atm and phase stability of membrane were examined using SEM-EDS.

The oxygen flux increased with increasing temperature and pressure difference and

the maximum oxygen permeation flux through 1.0mm membrane was ca.

3.7ml/cm2min at 950C. The oxygen permeation in the condition of air and CO2 (300 to 700ppm) in feed stream decreased more than 43% in comparison with air

feed stream.

Oxygen Permeation and Stability of Ba0.5Sr0.5Co0.8Fe0.2O3−δ Membrane According

to Trace Elements and Oxygen Partial Pressure in Synthetic Air. J.H.Park,

J.P.Kim, S.H.Son: Energy Procedia, 2009, 1[1], 369-74