OXYGEN PERMEATION FLUX THROUGH LA1-YSRYFEO3 LIMITED BY CARBON-MONOXIDE OXIDATION RATE

被引：48

作者：

VANHASSEL, BA ^{[1
]}

TENELSHOF, JE ^{[1
]}

BOUWMEESTER, HJM ^{[1
]}

机构：

[1] UNIV TWENTE,DEPT CHEM TECHNOL,INORGAN MAT SCI LAB,POB 217,7500 AE ENSCHEDE,NETHERLANDS

来源：

APPLIED CATALYSIS A-GENERAL | 1994年 / 119卷 / 02期

关键词：

AMBIPOLAR DIFFUSION; CARBON MONOXIDE; LA1-YSRYFEO3; OXYGEN PERMEATION; PEROVSKITE; PLATINUM; SURFACE MODIFICATION;

D O I：

10.1016/0926-860X(94)85197-2

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The oxygen permeation flux through La1-ySryFeO3-delta (y = 0.1, 0.2) in a large oxygen partial pressure gradient (air/CO, CO2 mixture) was found to be limited by the carbon monoxide oxidation rate at the low oxygen partial pressure side of the membrane. The oxygen permeation flux through the membrane was almost independent of its thickness (1 versus 2 mm) and strontium dopant concentration. The deposition of a 50 nm thin porous platinum layer at the low oxygen pressure side of the membrane increased the carbon monoxide oxidation rate and in this way the oxygen permeation flux by a factor 1.8 +/- 0.2.

引用

页码：279 / 291

页数：13

共 14 条

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