شماره ركورد كنفرانس :
5048
عنوان مقاله :
Oxygen permeation study of synthetic mixed-conducting ceramic membranes
Author/Authors :
Ensieh ،Ganji Babakhani Gas Department - Research Institute of Petroleum Industry (RIPI) -Tehran , Iran , Jafar ،Towfighi Chemical Engineering Department - Engineering Faculty - University of Tarbiat Modares - Tehran, Iran , Khodadad ،Nazari Chemical and Petrochemical Department - Research Institute of Petroleum Industry (RIPI) -Tehran , Iran , Reza ،Ahmadi Gas Department - Research Institute of Petroleum Industry (RIPI) -Tehran , Iran
كليدواژه :
ceramic membrane , perovskite , oxygen separation , permeation
عنوان كنفرانس :
ششمين كنگره بين المللي مهندسي شيمي
چكيده لاتين :
Perovskite-type Ba0.5Sr0.5Co0.2Fe0.8O3-δ oxide membranes were synthesized successfully using EDTNAD complexing
method. The structure of Ba0.5Sr0.5Co0.2Fe0.8O3-δ was determined by XRD which showed a cubic perovskite structure.
Oxygen permeation through these membranes was studied by the GC method using a high-temperature permeation cell.
High permeation fluxes were observed. The permeation flux of Ba0.5Sr0.5Co0.2Fe0.8O3-δ membrane reached about 1.8
mlmin−1 cm−2 under air/He gradients at 950oC. The oxygen permeation flux was determined at different oxygen partial
pressures of upstream and different temperatures between 750 and 950oC. The effects of air flow rate and sweeping
helium flow rate on the oxygen permeation were also investigated. XRD pattern after O2 -TPD showed that
Ba0.5Sr0.5Co0.2Fe0.8O3-δ possess a very stable structure.
