Oxygen separation from air using Ba0.95La0.05FeO3-δ membranes fitted with porous La1-xSrxFeO3-δ layers

Tetsuya Kida, Subaru Ninomiya, Hiroki Tatsushiro, Ken Watanabe, Masayoshi Yuasa, Kengo Shimanoe

研究成果: Contribution to journalArticle査読

8 被引用数 (Scopus)

抄録

Selective oxygen separation from air was performed using perovskite-type oxide membranes made of Ba0.95La0.05FeO3-δ. We demonstrated that surface modification of Ba0.95La0.05FeO3-δ membranes with La1-xSrxFeO3-δ catalyst layers led to an increase in oxygen permeation fluxes at 700-930 °C. We studied the effects of oxygen vacancy amounts, surface area, particles size, surface treatment of La1-xSrxFeO3-δ on the oxygen permeability of the membranes fitted with La1-xSrxFeO3-δ catalyst layers. Among the catalyst layers tested, the membranes fitted with La0.9Sr0.1FeO3-δ (x=0.1) showed the highest oxygen permeation flux probably because of its higher porosity and uniform morphology without open voids, which would increase the number of surface reaction sites. The obtained results suggest the feasibility of further upgrading the membrane performance by using surface catalyst layers having a homogeneous morphology and a different composition from that of the mother membrane.

本文言語英語
ページ(範囲)7830-7835
ページ数6
ジャーナルCeramics International
41
6
DOI
出版ステータス出版済み - 7 1 2015

All Science Journal Classification (ASJC) codes

  • 電子材料、光学材料、および磁性材料
  • セラミックおよび複合材料
  • プロセス化学およびプロセス工学
  • 表面、皮膜および薄膜
  • 材料化学

フィンガープリント

「Oxygen separation from air using Ba<sub>0.95</sub>La<sub>0.05</sub>FeO<sub>3-δ</sub> membranes fitted with porous La<sub>1-x</sub>Sr<sub>x</sub>FeO<sub>3-δ</sub> layers」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

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