Optimization of BaxSr1-xCo0.9Nb0.1O3-8 perovskite as oxygen semi-permeable membranes by compositional tailoring
Mixed conducting SrCo0.9Nb0.1O3−δ perovskite is a newly developed promising ceramic membrane material for air separation. In this work, SrCo0.9Nb0.1O3−δ was further optimized by the introduction of Ba to partially replace Sr in the A-site of the perovskite structure. The phase structure, phase stabi...
| Main Authors: | , , , , |
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| Format: | Journal Article |
| Published: |
Elsevier Science Ltd
2010
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| Online Access: | http://hdl.handle.net/20.500.11937/13384 |
| _version_ | 1848748333648052224 |
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| author | Zhao, J. Zhang, K. Gao, D. Shao, Zongping Liu, Shaomin |
| author_facet | Zhao, J. Zhang, K. Gao, D. Shao, Zongping Liu, Shaomin |
| author_sort | Zhao, J. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Mixed conducting SrCo0.9Nb0.1O3−δ perovskite is a newly developed promising ceramic membrane material for air separation. In this work, SrCo0.9Nb0.1O3−δ was further optimized by the introduction of Ba to partially replace Sr in the A-site of the perovskite structure. The phase structure, phase stability, carbonate formation rate under carbon dioxide atmosphere, electrical conductivity, oxygen desorption properties, and oxygen permeation properties of BaxSr1−xCo0.9Nb0.1O3−δ (BSCNx) with varying Ba2+ doping level were systematically investigated. Pure phase cubic perovskite was formed at x = 0.0–0.8. BSCNx (x = 0.0–0.8) can be stably operated in atmospheres with oxygen partial pressure varying from at least 1 atm to as low as 10−5 atm (Ar atmosphere). The barium doping concentration had a significant effect on electrical conductivity and oxygen permeability of the membranes. BSCN0.6 had the highest oxygen permeation flux of 2.67 × 10−6 mol cm−2 s−1 for 0.87 mm thickness at 900 °C and the highest oxygen ionic conductivity of 1.38 S cm−1 at 900 °C. |
| first_indexed | 2025-11-14T07:03:23Z |
| format | Journal Article |
| id | curtin-20.500.11937-13384 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:03:23Z |
| publishDate | 2010 |
| publisher | Elsevier Science Ltd |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-133842017-09-13T14:57:34Z Optimization of BaxSr1-xCo0.9Nb0.1O3-8 perovskite as oxygen semi-permeable membranes by compositional tailoring Zhao, J. Zhang, K. Gao, D. Shao, Zongping Liu, Shaomin Mixed conducting SrCo0.9Nb0.1O3−δ perovskite is a newly developed promising ceramic membrane material for air separation. In this work, SrCo0.9Nb0.1O3−δ was further optimized by the introduction of Ba to partially replace Sr in the A-site of the perovskite structure. The phase structure, phase stability, carbonate formation rate under carbon dioxide atmosphere, electrical conductivity, oxygen desorption properties, and oxygen permeation properties of BaxSr1−xCo0.9Nb0.1O3−δ (BSCNx) with varying Ba2+ doping level were systematically investigated. Pure phase cubic perovskite was formed at x = 0.0–0.8. BSCNx (x = 0.0–0.8) can be stably operated in atmospheres with oxygen partial pressure varying from at least 1 atm to as low as 10−5 atm (Ar atmosphere). The barium doping concentration had a significant effect on electrical conductivity and oxygen permeability of the membranes. BSCN0.6 had the highest oxygen permeation flux of 2.67 × 10−6 mol cm−2 s−1 for 0.87 mm thickness at 900 °C and the highest oxygen ionic conductivity of 1.38 S cm−1 at 900 °C. 2010 Journal Article http://hdl.handle.net/20.500.11937/13384 10.1016/j.seppur.2009.11.014 Elsevier Science Ltd restricted |
| spellingShingle | Zhao, J. Zhang, K. Gao, D. Shao, Zongping Liu, Shaomin Optimization of BaxSr1-xCo0.9Nb0.1O3-8 perovskite as oxygen semi-permeable membranes by compositional tailoring |
| title | Optimization of BaxSr1-xCo0.9Nb0.1O3-8 perovskite as oxygen semi-permeable membranes by compositional tailoring |
| title_full | Optimization of BaxSr1-xCo0.9Nb0.1O3-8 perovskite as oxygen semi-permeable membranes by compositional tailoring |
| title_fullStr | Optimization of BaxSr1-xCo0.9Nb0.1O3-8 perovskite as oxygen semi-permeable membranes by compositional tailoring |
| title_full_unstemmed | Optimization of BaxSr1-xCo0.9Nb0.1O3-8 perovskite as oxygen semi-permeable membranes by compositional tailoring |
| title_short | Optimization of BaxSr1-xCo0.9Nb0.1O3-8 perovskite as oxygen semi-permeable membranes by compositional tailoring |
| title_sort | optimization of baxsr1-xco0.9nb0.1o3-8 perovskite as oxygen semi-permeable membranes by compositional tailoring |
| url | http://hdl.handle.net/20.500.11937/13384 |