Fe-based perovskite-type oxides as excellent oxygen-permeable and reduction-tolerant materials

Y. Teraoka; H. Shimokawa; Ch Y. Kang; H. Kusaba; K. Sasaki

doi:10.1016/j.ssi.2006.05.037

Fe-based perovskite-type oxides as excellent oxygen-permeable and reduction-tolerant materials

Y. Teraoka, H. Shimokawa, Ch Y. Kang, H. Kusaba, K. Sasaki

水素利用工学

研究成果: ジャーナルへの寄稿 › 学術誌 › 査読

90 被引用数 (Scopus)

抄録

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)O_3-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 Ba_0.3Sr_0.7FeO_3-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.

本文言語	英語
ページ（範囲）	2245-2248
ページ数	4
ジャーナル	Solid State Ionics
巻	177
号	26-32 SPEC. ISS.
DOI	https://doi.org/10.1016/j.ssi.2006.05.037
出版ステータス	出版済み - 10月 31 2006

!!!All Science Journal Classification (ASJC) codes

化学 (全般)
材料科学（全般）
凝縮系物理学

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10.1016/j.ssi.2006.05.037

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title = "Fe-based perovskite-type oxides as excellent oxygen-permeable and reduction-tolerant materials",

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.",

author = "Y. Teraoka and H. Shimokawa and Kang, {Ch Y.} and H. Kusaba and K. Sasaki",

note = "Funding Information: This work was partly supported by CREST of JST (Japan Science and Technology Agency).",

year = "2006",

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doi = "10.1016/j.ssi.2006.05.037",

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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.

N1 - Funding Information: This work was partly supported by CREST of JST (Japan Science and Technology Agency).

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.

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M3 - Article

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SN - 0167-2738

VL - 177

SP - 2245

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JO - Solid State Ionics

JF - Solid State Ionics

IS - 26-32 SPEC. ISS.

ER -

Fe-based perovskite-type oxides as excellent oxygen-permeable and reduction-tolerant materials

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!!!All Science Journal Classification (ASJC) codes

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