Hostname: page-component-cd9895bd7-dk4vv Total loading time: 0 Render date: 2024-12-24T00:22:42.700Z Has data issue: false hasContentIssue false
  • English
  • Français

Development and characterization of thin-film perovskite membranes with oxygen permeability.

Published online by Cambridge University Press:  01 February 2011

R. Muydinov ,
M. Popova ,
A. Kaul ,
D. Stiens  and
G. Wahl
R. Muydinov
Affiliation:
Department of Chemistry, Moscow State University, 119992, Russia
M. Popova
Affiliation:
Department of Chemistry, Moscow State University, 119992, Russia
A. Kaul
Affiliation:
Department of Chemistry, Moscow State University, 119992, Russia
D. Stiens
Affiliation:
Institute of Surface Technology, TU Braunschweig, D-38108, Germany
G. Wahl
Affiliation:
Institute of Surface Technology, TU Braunschweig, D-38108, Germany
Get access

Abstract

Two conceptions of oxygen selective membrane's development, ceramic and thin film ones were considered using perovskite Ba0.5Sr0.5Co0.8Fe0.2O3−δ (BSCF) with mixed oxygen ionic and electronic conductivity. The films of BSCF (2–3mkm thick) were deposited by a MOCVD technique on the porous substrates (YSZ, Al2O3). Gas tightness, selective oxygen flux at 750–950°C and stability of the asymmetric film membranes in working conditions were investigated in comparison with ceramic ones. Sufficiently gas tight films can be directly obtained only on the substrates with submicron pores and at Tdep < 600°C. New alternative approach of large-pore substrates modification for obtaining gas-tight oxygen selectively permeable membranes was developed. To avoid the chemical interaction between BSCF and YSZ or Al2O3 the intermediate layer of BaO was pre-deposited. Resulting permeation through asymmetric membranes was thought to be dependent on oxygen exchange surface reaction and gas permeability of the porous supports.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 835: Symposium K – Solid-State Ionics , 2004 , K3.16
Copyright
Copyright © Materials Research Society 2005

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1. Shao, Z., Yang, W., Cong, Y., et al., J. membrane science 172, 177–188 (2000).Google Scholar
2. Shao, Z., Halle, S. M., Nature 431, 170–173 (2004).Google Scholar
3. Van Veen, A. C., Rebeilleau, M., Farrusseng, D., Mirodatos, C., Chem. Commun., 32–33 (2003).Google Scholar
4. Wagner, C., Z. Phys. Chem. 21, 25–41(1933).Google Scholar
5. Stiens, D., Wahl, G., Garcia, G., et al., Electrochemical Soc. Proc. 08, 990–995 (2003).Google Scholar
6. Stiens, D., Muydinov, R., Kaul, A., Wahl, G., HTSC-VII Proc. (2004) (in press).Google Scholar