A comparison of oxygen permeation and CO2 tolerance of La0.6Sr0.4CO0.2Fe0.6Nb0.2O3-δ and La0.6Sr0.4Fe0.8Nb0.2O3-δ ceramic membranes

被引：10

作者：

Gui, Liangqi ^{[1
]}

Wan, Yanhong ^{[1
]}

Wang, Ranran ^{[1
]}

Wang, Zhihao ^{[1
]}

He, Beibei ^{[1
]}

Zhao, Ling ^{[1
]}

机构：

[1] China Univ Geosci, Dept Mat Sci & Chem, CUG AU Inst Funct Mat, Wuhan 430074, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2015年 / 644卷

基金：

中国国家自然科学基金;

关键词：

Surface exchange; Bulk diffusion; Oxygen permeation; CO2; tolerance; HOLLOW-FIBER MEMBRANES; SURFACE EXCHANGE PROPERTIES; CHEMICAL-STABILITY; PARTIAL OXIDATION; HIGH-PERFORMANCE; PEROVSKITE; OXIDE; CO2-TOLERANT; HYDROGEN; BEHAVIOR;

D O I：

10.1016/j.jallcom.2015.04.204

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：

La0.6Sr0.4CO0.2Fe0.6Nb0.2O3-delta (LSCFN) and LauSr(0.4)Fe(0).8Nb0.2O3-delta (LSFN) perovskites are prepared for oxygen permeation membranes. The oxygen fluxes of LSCFN and LSFN at 900 degrees C are 0.20 mL cm(-2) min(-1) and 0.12 mL cm(-2) min(-1), respectively, which are closely related with their oxygen surface exchange and bulk diffusion properties. Importantly, the flux of LSFN under CO2 atmosphere remains steadier than ISCFN, which could be explained by average metal-oxygen bond energy (ABE) of perovskites. The balance between the oxygen permeation and CO2 tolerance of LSFN indicates it a promising candidate as oxygen permeation membrane for oxyfuel application. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：788 / 792

页数：5

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