Poisoning effect of SO2 on the oxygen permeation behavior of La0.6Sr0.4Co0.2Fe0.8O3-δ perovskite hollow fiber membranes

被引：38

作者：

Gao, Jian ^{[1
]}

Li, Liping ^{[1
]}

Yin, Zhen ^{[1
]}

Zhang, Jicai ^{[1
]}

Lu, Sumin ^{[1
]}

Tan, Xiaoyao ^{[1
]}

机构：

[1] Tianjin Polytech Univ, Dept Chem Engn, State Key Lab Hollow Fibre Membrane Mat & Proc, Tianjin 300387, Peoples R China

来源：

JOURNAL OF MEMBRANE SCIENCE | 2014年 / 455卷

基金：

中国国家自然科学基金;

关键词：

Perovskite membrane; Hollow fiber; Oxygen permeation; SO2; poisoning; Oxy-fuel combustion; CO2; BA0.5SR0.5CO0.8FE0.2O3-DELTA; MICROSTRUCTURE;

D O I：

10.1016/j.memsci.2013.12.073

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The influence of SO2 in sweep gas on the oxygen permeation properties of the La0.6Sr0.4Co0.2Fe0.8O3-delta (LSCF) perovskite hollow fiber membranes has been extensively investigated by a variety of characterization techniques. Scanning electron microscopy (SEM), electron dispersive X-ray (EDX), X-ray diffraction (XRD) and thermo-gravimetric (TG) measurements are carried out over the membranes before and after the SO2 exposure. The results indicate that the oxygen permeability of the LSCF membrane decreases significantly or even completely disappear after the exposure to SO2. The significant poisoning effect of SO2 On the oxygen permeation through the LSCF perovskite membranes can be attributed to the decomposition of a thin layer of the membrane inner surface, leading to depressed surface exchange kinetics. (C) 2014 Elsevier B.V. All rights reserved

引用

页码：341 / 348

页数：8

共 32 条

[1] Influence of CO2 on the oxygen permeation performance and the microstructure of perovskite-type (Ba0.5Sr0.5)(Co0.8Fe0.2)O3-δ membranes [J].