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

被引：49

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

[1]

Barin I., 1973, THERMOCHEMICAL PROPE

[2]

Burggraaf A.J., 1991, SCI CERAMIC INTERFAC, P525

[3]

COULSON JM, 1982, CHEM ENG, V3, P46

[4] THE EFFECT OF OXYGEN STOICHIOMETRY ON PHASE-RELATIONS AND STRUCTURE IN THE SYSTEM LA1-XSRXFEO3-DELTA (0-LESS-THAN-OR-EQUAL-TO-X-LESS-THAN-OR-EQUAL-TO-1, 0-LESS-THAN-OR-EQUAL-TO-DELTA-LESS-THAN-OR-EQUAL-TO-0.5) [J].

DANN, SE ;

CURRIE, DB ;

WELLER, MT ;

THOMAS, MF ;

ALRAWWAS, AD .

JOURNAL OF SOLID STATE CHEMISTRY, 1994, 109 (01) :134-144

[5]

ICROPERA FP, 1985, FUNDAMENTALS HEAT MA, P178

[6] DIFFUSION OF OXIDE ION VACANCIES IN PEROVSKITE-TYPE OXIDES [J].

ISHIGAKI, T ;

YAMAUCHI, S ;

KISHIO, K ;

MIZUSAKI, J ;

FUEKI, K .

JOURNAL OF SOLID STATE CHEMISTRY, 1988, 73 (01) :179-187

[7] CRITICAL PERFORMANCE EVALUATION OF CATALYSTS AND MECHANISTIC IMPLICATIONS FOR OXIDATIVE COUPLING OF METHANE [J].

MAITRA, AM .

APPLIED CATALYSIS A-GENERAL, 1993, 104 (01) :11-59

[8] NONSTOICHIOMETRY AND DEFECT STRUCTURE OF THE PEROVSKITE-TYPE OXIDES LA1-XSRXFEO3-DELTA [J].

MIZUSAKI, J ;

YOSHIHIRO, M ;

YAMAUCHI, S ;

FUEKI, K .

JOURNAL OF SOLID STATE CHEMISTRY, 1985, 58 (02) :257-266

[9] THE HAVEN RATIO IN FAST IONIC CONDUCTORS [J].

MURCH, GE .

SOLID STATE IONICS, 1982, 7 (03) :177-198

[10] NATURAL-GAS CONVERSION TO LIQUID FUELS AND CHEMICALS - WHERE DOES IT STAND [J].

PARKYNS, ND ;

WARBURTON, CI ;

WILSON, JD .

CATALYSIS TODAY, 1993, 18 (04) :385-442

← 1 2 →