Abstract
Development of new mixed conductors with both high oxygen permeability and phase stability under reducing atmosphere is indispensable for realizing practical MIEC systems of oxygen separation and membrane reactor. In this study, a family of Co-free Fe-based perovskite-type oxides, (Ba,Sr)(Fe,Mn)O3-δ was prepared and their oxygen permeability and phase stability against reduction were examined. Optimum Ba doping concentration at A site was found around 30%, and Ba0.3Sr0.7FeO3-δ showed highest oxygen permeability (3.0 cm3(STP)cm- 2 min- 1 at 900 °C) in this study. Perovskite-type oxides of the Ba-Mn-Fe-O and Ba-Sr-Mn-Fe-O systems with appropriate compositions preserved the structure even after annealing in the reducing atmosphere of 5% H2/N2 at 1000 °C, showing their exceeding reduction tolerance.
| Original language | English |
|---|---|
| Pages (from-to) | 2245-2248 |
| Number of pages | 4 |
| Journal | Solid State Ionics |
| Volume | 177 |
| Issue number | 26-32 SPEC. ISS. |
| DOIs | |
| Publication status | Published - Oct 31 2006 |
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All Science Journal Classification (ASJC) codes
- Chemistry(all)
- Materials Science(all)
- Condensed Matter Physics
Cite this
Fe-based perovskite-type oxides as excellent oxygen-permeable and reduction-tolerant materials. / Teraoka, Y.; Shimokawa, H.; Kang, Ch Y.; Kusaba, H.; Sasaki, K.
In: Solid State Ionics, Vol. 177, No. 26-32 SPEC. ISS., 31.10.2006, p. 2245-2248.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Fe-based perovskite-type oxides as excellent oxygen-permeable and reduction-tolerant materials
AU - Teraoka, Y.
AU - Shimokawa, H.
AU - Kang, Ch Y.
AU - Kusaba, H.
AU - Sasaki, K.
PY - 2006/10/31
Y1 - 2006/10/31
N2 - Development of new mixed conductors with both high oxygen permeability and phase stability under reducing atmosphere is indispensable for realizing practical MIEC systems of oxygen separation and membrane reactor. In this study, a family of Co-free Fe-based perovskite-type oxides, (Ba,Sr)(Fe,Mn)O3-δ was prepared and their oxygen permeability and phase stability against reduction were examined. Optimum Ba doping concentration at A site was found around 30%, and Ba0.3Sr0.7FeO3-δ showed highest oxygen permeability (3.0 cm3(STP)cm- 2 min- 1 at 900 °C) in this study. Perovskite-type oxides of the Ba-Mn-Fe-O and Ba-Sr-Mn-Fe-O systems with appropriate compositions preserved the structure even after annealing in the reducing atmosphere of 5% H2/N2 at 1000 °C, showing their exceeding reduction tolerance.
AB - Development of new mixed conductors with both high oxygen permeability and phase stability under reducing atmosphere is indispensable for realizing practical MIEC systems of oxygen separation and membrane reactor. In this study, a family of Co-free Fe-based perovskite-type oxides, (Ba,Sr)(Fe,Mn)O3-δ was prepared and their oxygen permeability and phase stability against reduction were examined. Optimum Ba doping concentration at A site was found around 30%, and Ba0.3Sr0.7FeO3-δ showed highest oxygen permeability (3.0 cm3(STP)cm- 2 min- 1 at 900 °C) in this study. Perovskite-type oxides of the Ba-Mn-Fe-O and Ba-Sr-Mn-Fe-O systems with appropriate compositions preserved the structure even after annealing in the reducing atmosphere of 5% H2/N2 at 1000 °C, showing their exceeding reduction tolerance.
UR - http://www.scopus.com/inward/record.url?scp=33750285214&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33750285214&partnerID=8YFLogxK
U2 - 10.1016/j.ssi.2006.05.037
DO - 10.1016/j.ssi.2006.05.037
M3 - Article
AN - SCOPUS:33750285214
VL - 177
SP - 2245
EP - 2248
JO - Solid State Ionics
JF - Solid State Ionics
SN - 0167-2738
IS - 26-32 SPEC. ISS.
ER -