Details
| Original language | English |
|---|---|
| Pages (from-to) | 2738-2745 |
| Number of pages | 8 |
| Journal | AIChE journal |
| Volume | 57 |
| Issue number | 10 |
| Publication status | Published - 9 Sept 2011 |
Abstract
A CO 2-stable dual phase membrane of the composition 40 wt % NiFe 2O 4-60 wt % Ce 0.9Gd 0.1O 2-δ (40NFO-60CGO) was synthesized in three different ways: mixing of the starting powders (1) in a mortar and (2) in a ball-mill as well as by (3) direct in situ one-pot sol-gel powder synthesis. Backscattered scanning electron microscopy revealed that the direct one-pot synthesis of 40NFO-60CGO gives the smallest grains in a homogeneous distribution, compared with powder homogenization in the mortar or the ball-mill. The smaller is the grains, the higher is the oxygen permeability. The permeation of the membrane can be improved by coating a porous La 0.6Sr 0.4CoO 3-δ (LSC) layer on the surface of the air side. The dual phase membrane of 40NFO-60CGO prepared by in situ synthesis shows a steady oxygen flux of 0.30 ml/(min cm 2) over more than 100 h when pure CO 2 was used as sweep gas, which indicated that the dual phases membrane is CO 2-resistant at least over this 5 days testing period.
Keywords
- CO -stable, Dual phase membrane, Homogeneity, Oxygen separation
ASJC Scopus subject areas
- Biochemistry, Genetics and Molecular Biology(all)
- Biotechnology
- Environmental Science(all)
- Environmental Engineering
- Chemical Engineering(all)
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In: AIChE journal, Vol. 57, No. 10, 09.09.2011, p. 2738-2745.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Influence of the preparation methods on the microstructure and oxygen permeability of a CO 2-stable dual phase membrane
AU - Luo, Huixia
AU - Jiang, Heqing
AU - Efimov, Konstantin
AU - Caro, Jürgen
AU - Wang, Haihui
PY - 2011/9/9
Y1 - 2011/9/9
N2 - A CO 2-stable dual phase membrane of the composition 40 wt % NiFe 2O 4-60 wt % Ce 0.9Gd 0.1O 2-δ (40NFO-60CGO) was synthesized in three different ways: mixing of the starting powders (1) in a mortar and (2) in a ball-mill as well as by (3) direct in situ one-pot sol-gel powder synthesis. Backscattered scanning electron microscopy revealed that the direct one-pot synthesis of 40NFO-60CGO gives the smallest grains in a homogeneous distribution, compared with powder homogenization in the mortar or the ball-mill. The smaller is the grains, the higher is the oxygen permeability. The permeation of the membrane can be improved by coating a porous La 0.6Sr 0.4CoO 3-δ (LSC) layer on the surface of the air side. The dual phase membrane of 40NFO-60CGO prepared by in situ synthesis shows a steady oxygen flux of 0.30 ml/(min cm 2) over more than 100 h when pure CO 2 was used as sweep gas, which indicated that the dual phases membrane is CO 2-resistant at least over this 5 days testing period.
AB - A CO 2-stable dual phase membrane of the composition 40 wt % NiFe 2O 4-60 wt % Ce 0.9Gd 0.1O 2-δ (40NFO-60CGO) was synthesized in three different ways: mixing of the starting powders (1) in a mortar and (2) in a ball-mill as well as by (3) direct in situ one-pot sol-gel powder synthesis. Backscattered scanning electron microscopy revealed that the direct one-pot synthesis of 40NFO-60CGO gives the smallest grains in a homogeneous distribution, compared with powder homogenization in the mortar or the ball-mill. The smaller is the grains, the higher is the oxygen permeability. The permeation of the membrane can be improved by coating a porous La 0.6Sr 0.4CoO 3-δ (LSC) layer on the surface of the air side. The dual phase membrane of 40NFO-60CGO prepared by in situ synthesis shows a steady oxygen flux of 0.30 ml/(min cm 2) over more than 100 h when pure CO 2 was used as sweep gas, which indicated that the dual phases membrane is CO 2-resistant at least over this 5 days testing period.
KW - CO -stable
KW - Dual phase membrane
KW - Homogeneity
KW - Oxygen separation
UR - http://www.scopus.com/inward/record.url?scp=80052614457&partnerID=8YFLogxK
U2 - 10.1002/aic.12488
DO - 10.1002/aic.12488
M3 - Article
AN - SCOPUS:80052614457
VL - 57
SP - 2738
EP - 2745
JO - AIChE journal
JF - AIChE journal
SN - 0001-1541
IS - 10
ER -