Perovskite-related ZrO{sub 2}-doped SrCo{sub 0.4}Fe{sub 0.6}O{sub 3{minus}{delta}} membrane for oxygen permeation
- Nanjing Univ. of Chemical Technology (China). Membrane Science and Technology Research Center
- Oak Ridge National Lab., TN (United States)
- Worcester Polytechnic Inst., MA (United States). Dept. of Chemical Engineering
A typical perovskite La{sub 0.2}Sr{sub 0.8}Co{sub 0.2}Fe{sub 0.8}O{sub 3{minus}{delta}} (LSCF) membrane and a novel perovskite-related ZrO{sub 2}-doped SrCo{sub 0.4}Fe{sub 0.6}O{sub 3{minus}{delta}} (SCFZ) membrane were successfully prepared. The sintered membranes were characterized by an in-situ high-temperature X-ray diffraction, scanning electron microscopy and energy dispersive spectroscopy. Oxygen permeabilities of the two dense membranes were measured in the temperature range of 923 to 1,173 K under a fixed oxygen partial pressure gradient. The results of the oxygen permeation experiment and high-temperature X-ray diffraction in argon atmosphere indicate that the perovskite-related SCFZ membrane has higher oxygen fluxes and is more stable than that of the LSCF membrane at elevated temperatures and reduced oxygen partial pressures.
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- OSTI ID:
- 329245
- Journal Information:
- AIChE Journal, Vol. 45, Issue 2; Other Information: PBD: Feb 1999
- Country of Publication:
- United States
- Language:
- English
Similar Records
Degradation of La{sub 0.6}Sr{sub 0.4}Fe{sub 0.8}Co{sub 0.2}O{sub 3{minus}{delta}} in carbon dioxide and water atmospheres
Cobalt-iron red-ox behavior in nanostructured La{sub 0.4}Sr{sub 0.6}Co{sub 0.8}Fe{sub 0.2}O{sub 3-{delta}} cathodes