La0.6Sr0.4Co0.2Fe0.8O3-δ hollow fibre membrane performance improvement by coating of Ba0.5Sr0.5Co0.9Nb0.1O3-δ porous layer

被引：19

作者：

Han, Dezhi ^{[1
,2
]}

Wu, Jinhu ^{[1
]}

Yan, Zifeng ^{[2
]}

Zhang, Kun ^{[3
]}

Liu, Jian ^{[3
]}

Liu, Shaomin ^{[3
]}

机构：

[1] Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Key Lab Biofuels, Qingdao 266101, Peoples R China

[2] China Univ Petr, CNPC Key Lab Catalysis, State Key Lab Heavy Oil Proc, Qingdao 266555, Peoples R China

[3] Curtin Univ, Dept Chem Engn, Perth, WA 6845, Australia

来源：

RSC ADVANCES | 2014年 / 4卷 / 38期

基金：

澳大利亚研究理事会;

关键词：

OXYGEN-PERMEABLE MEMBRANE; DUAL-PHASE MEMBRANES; SURFACE MODIFICATION; PEROVSKITE; PERMEATION; SEPARATION; ENHANCEMENT; CAPTURE; FLUX;

D O I：

10.1039/c4ra00704b

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The oxygen permeation performance of perovskite La0.6Sr0.4Co0.2Fe0.8O3-delta (LSCF) hollow fibre membranes was enhanced by surface modification via coating of a Ba0.5Sr0.5Co0.9Nb0.1O3-delta (BSCN) porous layer. The hollow fibres were characterized by XRD, SEM and EDS elemental mapping and tested for air separation. Experimental results revealed that the BSCN porous layer had significantly improved the oxygen permeation flux of the coated LSCF hollow fibre membranes. Operated at 950 degrees C and under the oxygen pressure gradient of the air/sweep gas, the maximum oxygen permeation flux of 1.92 mL cm(-2) min(-1) was achieved after the hollow fibre membrane was coated by a BSCN porous layer on both outer and inner surfaces. In addition, the modified membrane showed high oxygen permeation stability under the investigated operational conditions.

引用

页码：19999 / 20004

页数：6

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