Structure Stability and Oxygen Permeability of Perovskite-type Oxides of Ba0.5Sr0.5Co0.8Fe0.1R0.1O3-δ （R=Al, Mn, Fe, Ce, Cr, Ni, Co）

材料科学技术（英文）, 2012, 28(2): 177-183.

Structure Stability and Oxygen Permeability of Perovskite-type Oxides of Ba0.5Sr0.5Co0.8Fe0.1R0.1O3-δ （R=Al, Mn, Fe, Ce, Cr, Ni, Co）

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1.Gas Department, Research Institute of Petroleum Industry （RIPI）, 14665-137, Tehran, Iran

2.Chemical Engineering Department, Engineering Faculty, University of Tarbiat Modares, 14115-111, Tehran, Iran

3.Gas Department, Research Institute of Petroleum Industry （RIPI）, 14665-137, Tehran, Iran

4.Gas Department, Research Institute of Petroleum Industry （RIPI）, 14665-137, Tehran, Iran

5.Gas Department, Research Institute of Petroleum Industry （RIPI）, 14665-137, Tehran, Iran

6.Gas Department, Research Institute of Petroleum Industry （RIPI）, 14665-137, Tehran, Iran

关键词：钙钛矿型复合氧化物 , 氧渗透 , 结构稳定性 , X射线衍射仪 , O2-TPD , 氧化物膜 , 程序升温脱附 , 热重差热分析

Structure Stability and Oxygen Permeability of Perovskite-type Oxides of Ba0.5Sr0.5Co0.8Fe0.1R0.1O3-δ （R=Al, Mn, Fe, Ce, Cr, Ni, Co）

Keywords： Perovskite , Ceramic membrane , Oxygen separation , Phase stability ,

Perovskite-type a0.5Sr0.5Co0.8Fe0.1R0.1O3-δ （R=Al, Mn, Fe, Ce, Cr, Ni, Co） oxide membranes were ex- ploited 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 desorp- tion （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℃. High permeation fluxes were observed for these materials. The high permeation flux was about 3.19 ml.min-l.cm-2 under air/He gradients at 950℃, which was achieved for a0.5Sr0.5Co0.8Fe0.1R0.1O3-δ（BSCFNiO） membrane. The results of analysis showed no phase transition for BSCFNiO oxide with increasing temperature and XRD pattern of this material after O2-TPD indicated to sustain a pure perovskite structure after oxygen permeation process.

参考文献

[1]	Y.Zeng;Y.S.Lin .Oxidative Coupling of Methane on Oxygen-Semipermeable Yttria-Doped Bismuth Oxide Ceramics in a Reducing Atmosphere[J].Industrial & Engineering Chemistry Research,1997(2):277-283.

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材料期刊网

Structure Stability and Oxygen Permeability of Perovskite-type Oxides of Ba0.5Sr0.5Co0.8Fe0.1R0.1O3-δ （R=Al, Mn, Fe, Ce, Cr, Ni, Co）

Structure Stability and Oxygen Permeability of Perovskite-type Oxides of Ba0.5Sr0.5Co0.8Fe0.1R0.1O3-δ （R=Al, Mn, Fe, Ce, Cr, Ni, Co）

参考文献