Structural design of oxide ion conductive membranes for efficient oxygen separation from air
| Project/Area Number |
23360311
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Structural/Functional materials
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| Research Institution | Kumamoto University (2013)
Kyushu University (2011-2012) |
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Principal Investigator |
KIDA Tetsuya 熊本大学, 大学院自然科学研究科, 教授 (70363421)
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| Co-Investigator(Kenkyū-buntansha) |
SHIMANOE Kengo 九州大学, 大学院・総合理工学研究院, 教授 (10274531)
WATANABE Ken 独立行政法人物質・材料研究機構, 研究員 (90552480)
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| Project Period (FY) |
2011-04-01 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥19,630,000 (Direct Cost: ¥15,100,000、Indirect Cost: ¥4,530,000)
Fiscal Year 2013: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2012: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2011: ¥14,950,000 (Direct Cost: ¥11,500,000、Indirect Cost: ¥3,450,000)
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| Keywords | 酸素透過 / BaFeO3 / ペロブスカイト / 混合導電体 / 酸素拡散 / 気体分離 / トレーサー拡散実験 / 酸素透過膜 / 酸素吸着 |
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| Research Abstract |
Oxygen separation using mixed-conducting perovskite-type oxides have been attracting much attention as a cost-effective, environmentally benign method to produce oxygen-enriched air. One major advantage of this technology is that oxygen can be separated from air by oxygen concentration gradients. Any electrodes and external applied voltages are not required. In this project, we focused on Fe-based perovskite-type oxides such as Ba0.95La0.05FeO3(BLF) that shows good oxygen permeation properties and stability. We found that controlling the membrane structure by depositing oxygen desorption layers significantly improves the oxygen permeation properties. The composition of the oxygen desorption layers was also influential factors for oxygen permeation. The SIMS (Secondary Ion Mass Spectrometry) analysis using stable isotope 18O2 as a tracer revealed the oxygen permeation mechanism in BLF membranes.
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Report
(4 results)
Research Products
(15 results)
