Solid-state reaction was used to prepare mixed-conducting Ba0.5Sr0.5Ga1-xFexO3-d

(BSGF) perovskite-type membranes. They were characterized by SEM, XRD and

DSC and their oxygen permeation performance was examined. The experiments

showed that the doping content of the Ga can play an important role in the structure

of BSGF. It was found that the perovskite structure was sustained when Ga doping

was lower than 0.4 or a little higher, but when Ga doping reached 0.6, the samples

will not be perovskite structure. The oxygen permeation experiment showed that

the temperature can affect the oxygen permeation of the BSGF membrane

remarkably. At about 940C, its oxygen permeation was higher and decreased with

temperature. The measured oxygen desorption activity energy of the

Ba0.5Sr0.5Ga0.2Fe0.8O3-d measured was about 306.314kJ/mol.

The Structure and Oxygen Permeation Performance of Ba0.5Sr0.5Ga1-xFexO3-δ

Perovskite-Type Oxides. J.Hu, H.Chen, R.R.Zhang: Journal of Physics -

Conference Series, 2009, 152[1], 012078