Structure Stability and Oxygen Permeability of Perovskite-type Oxides of Ba(0.5)Sr(0.5)Co(0.8)Fe(0.1)R(0.1)O(3- delta ) (R=Al, Mn, Fe, Ce, Cr, Ni, Co)
Perovskite-type Ba(0.5)Sr(0.5)Co(0.8)Fe(0.1)R(0.1)O(3- delta ) (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), te...
Gespeichert in:
Veröffentlicht in: | Journal of materials science & technology 2012-02, Vol.28 (2), p.177-183 |
---|---|
Hauptverfasser: | , , , , , |
Format: | Artikel |
Sprache: | eng |
Schlagworte: | |
Online-Zugang: | Volltext |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
Zusammenfassung: | Perovskite-type Ba(0.5)Sr(0.5)Co(0.8)Fe(0.1)R(0.1)O(3- delta ) (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 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 degree C. High permeation fluxes were observed for these materials. The high permeation flux was about 3.19 ml times min(-1) times cm(-2) under air/He gradients at 950 degree C, which was achieved for Ba(0.5)Sr(0.5)Co(0.8)Fe(0.1)Ni(0.1)O(3- delta ) (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. |
---|---|
ISSN: | 1005-0302 |