Zr0.84Y0.16O1.92 -La0.8Sr0.2Cr0.5Fe0.5O3-δ composite membrane for CO2 decomposition

被引：12

作者：

Luo, Yonglan ^{[1
]}

Liu, Tong ^{[1
]}

Gao, Jianfeng ^{[1
]}

Chen, Chusheng ^{[1
]}

机构：

[1] Univ Sci & Technol China, Dept Mat Sci & Engn, CAS Key Lab Mat Energy Convers, Hefei 230026, Anhui, Peoples R China

来源：

MATERIALS LETTERS | 2012年 / 86卷

基金：

中国国家自然科学基金;

关键词：

Oxygen permeable membrane; CO2; decomposition; Defects; Ceramic composites; DUAL-PHASE COMPOSITE; OXYGEN PERMEATION; PARTIAL OXIDATION; STABILITY; PERMEABILITY; TRANSPORT; REACTOR; METHANE;

D O I：

10.1016/j.matlet.2012.06.101

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Zr0.84Y0.16O1.92 (YSZ)-La0.8Sr0.2Cr0.5Fe0.5O3-delta(LSCF) disk composite membrane is investigated under CO2/CO gradient at 800-900 degrees C. It reveals that the composite has excellent stability and appreciable oxygen permeability under the operation conditions. The oxygen permeation flux is 0.033 ml cm(-2) min(-1) for the disk membrane with a thickness of 0.5 mm at 900 degrees C. For all the samples with the thickness of 0.5, 1.0 and 1.5 mm, the oxygen permeation is controlled simultaneously by bulk oxygen diffusion and surface exchange, and the apparent activation energy decreased with the decreasing thickness. It is possibly explained as that the CO2/CO atmosphere differently affects the chemical defects of the membranes with different thicknesses. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：5 / 8

页数：4

共 13 条

[11] Oxygen permeation and electrical transport of Gd1-xPrxBaCo2O5+δ dense membranes
Yang, Chunli
Wu, Xiusheng
Fang, Shumin
Chen, Chusheng
Liu, Wei
[J]. MATERIALS LETTERS, 2009, 63 (12) : 1007 - 1009
[12] Oxygen permeability and stability of Sr0.95Co0.8Fe0.2O3-δ in a CO2- and H2O-containing atmosphere
Yi, JX
Feng, SJ
Zuo, YB
Liu, W
Chen, CS
[J]. CHEMISTRY OF MATERIALS, 2005, 17 (23) : 5856 - 5861
[13] Oxygen permeability and structural stability of BaCe0.15Fe0.85O3-δ membranes
Zhu, Xuefeng
Cong, You
Yang, Weishen
[J]. JOURNAL OF MEMBRANE SCIENCE, 2006, 283 (1-2) : 38 - 44

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