Structure Stability and Oxygen Permeability of Perovskite-type Oxides of Ba0.5Sr0.5Co0.8Fe0.1R0.1O （3-δ）（R=Al,Mn,Fe,Ce,Cr,Ni,Co）
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG2012年第2期
论文作者：Ensieh Ganji Babakhani Jafar Towfighi Laleh Shirazi Ali Nakhaeipour Akbar Zamaniyan Zahra Shafiei
文章页码：177 - 183
摘 要：Perovskite-type Ba 0.5 Sr 0.5 Co 0.8 Fe 0.1 R 0.1 O 3 δ （R=Al,Mn,Fe,Ce,Cr,Ni,Co） oxide membranes were exploited and synthesized.Oxygen behavior,order-disorder transition and phase stability of these composite oxides were investigated by combined analysis of X-ray diffraction （XRD）,temperature programmed desorption （TPD）,thermogravimetric-differential thermal analysis （TG-DTA）.Oxygen permeation through these membranes was studied by the gas chromatography （GC） method using a high-temperature permeation cell in a wide temperature range from 700 to 950 C.High permeation fluxes were observed for these materials.The high permeation flux was about 3.19 ml·min 1 ·cm 2 under air/He gradients at 950 C,which was achieved for Ba 0.5 Sr 0.5 Co 0.8 Fe 0.1 Ni 0.1 O 3 δ （BSCFNiO） membrane.The results of analysis showed no phase transition for BSCFNiO oxide with increasing temperature and XRD pattern of this material after O 2-TPD indicated to sustain a pure perovskite structure after oxygen permeation process.
Ensieh Ganji Babakhani1，Jafar Towfighi2，Laleh Shirazi1，Ali Nakhaeipour1，Akbar Zamaniyan1，Zahra Shafiei1
1. Gas Department,Research Institute of Petroleum Industry (RIPI)2. Chemical Engineering Department,Engineering Faculty,University of Tarbiat Modares
摘 要：Perovskite-type Ba 0.5 Sr 0.5 Co 0.8 Fe 0.1 R 0.1 O 3 δ （R=Al,Mn,Fe,Ce,Cr,Ni,Co） oxide membranes were exploited and synthesized.Oxygen behavior,order-disorder transition and phase stability of these composite oxides were investigated by combined analysis of X-ray diffraction （XRD）,temperature programmed desorption （TPD）,thermogravimetric-differential thermal analysis （TG-DTA）.Oxygen permeation through these membranes was studied by the gas chromatography （GC） method using a high-temperature permeation cell in a wide temperature range from 700 to 950 C.High permeation fluxes were observed for these materials.The high permeation flux was about 3.19 ml·min 1 ·cm 2 under air/He gradients at 950 C,which was achieved for Ba 0.5 Sr 0.5 Co 0.8 Fe 0.1 Ni 0.1 O 3 δ （BSCFNiO） membrane.The results of analysis showed no phase transition for BSCFNiO oxide with increasing temperature and XRD pattern of this material after O 2-TPD indicated to sustain a pure perovskite structure after oxygen permeation process.
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