Enhancement of oxygen permeation by La0.6Sr0.4CoO3-δ coating in La0.7Sr0.3Ga0.6Fe0.4O3-δ membrane

被引：30

作者：

Lee, KS ^{[1
]}

Lee, S ^{[1
]}

Kim, JW ^{[1
]}

Woo, SK ^{[1
]}

机构：

[1] Korea Inst Energy Res, Taejon 305345, South Korea

来源：

DESALINATION | 2002年 / 147卷 / 1-3期

关键词：

La0.7Sr0.3Ga0.3Fe0.3O3-delta; La(0.6)Sr(0.4)CoO(3-delta)coating; perovskite; membrane reactor; oxygen permeation; stability;

D O I：

10.1016/S0011-9164(02)00640-9

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A La0.7Sr0.3Ga0.6Fe0.4O3-delta membrane with perovskite structure is fabricated by a conventional solid-state reaction. As the oxygen permeation flux of the La0.6Sr0.4Ga0.6Fe0.4O3-delta membrane was lower than commercial gas separation membranes, we coated a La0.6Sr0.4CoO3-delta layer to enhance the oxygen permeation flux. The La0.6Sr0.4CoO3-delta coating was very effective for increasing oxygen flux, as the flux was as much as 2 to 6 times higher than that of an uncoated La0.7Sr0.3Ga0.6Fe0.4O3-delta membrane. Moreover, the oxygen permeation flux was strongly influenced by the porosity of the coating layer. XRD analysis after the oxygen permeation confirmed that Ga-based membranes have a phase stability.

引用

页码：439 / 444

页数：6

共 11 条

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