Details
| Original language | English |
|---|---|
| Pages (from-to) | 604-610 |
| Number of pages | 7 |
| Journal | AIChE journal |
| Volume | 56 |
| Issue number | 3 |
| Early online date | 9 Feb 2010 |
| Publication status | E-pub ahead of print - 9 Feb 2010 |
Abstract
Dense BaCo0.7Fe0.2Ta0.1O3-δ (BCFT) perovskite membranes were successfully synthesized by a simple solid state reaction. In situ high-temperature X-ray diffraction indicated the good structure stability and phase reversibility of BCFT at high temperatures. The thermal expansion coefficient (TEC) of BCFT was determined to amount 1.02 × 10 -5 K -1, which is smaller than those of Ba0.5Sr0.5Co0.8Fe0.2O3-δ (BSCF) (1.15 × 10 -5 K -1), SrCo0.8Fe0.2O3-δ (SCF) (1.79 × 10 -5 K -1), and BaCo0.4Fe0.4Zr0.2O3-δ (BCFZ) (1.03 10 -5 K -1). It can be seen that the introduction of Ta ions into the perovskite framework could effectively lower the TEC. Thickness dependence studies of oxygen permeation through the BCFT membrane indicated that the oxygen permeation process was controlled by bulk diffusion. A membrane reactor made from BCFT was successfully operated for the partial oxidation of methane to syngas at 900°C for 400 h without failure and with the relatively high, stable oxygen permeation flux of about 16.8 ml/min cm2.
Keywords
- Membrane, Mixed conductor, Oxygen separation, Perovskite, POM
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. 56, No. 3, 09.02.2010, p. 604-610.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Oxygen permeability and structural stability of a novel tantalum-doped perovskite BaCo0.7Fe0.2Ta0.1O3-δ
AU - Luo, Huixia
AU - Tian, Bingbing
AU - Wei, Yanying
AU - Wang, Haihui
AU - Jiang, Heqing
AU - Caro, Jürgen
PY - 2010/2/9
Y1 - 2010/2/9
N2 - Dense BaCo0.7Fe0.2Ta0.1O3-δ (BCFT) perovskite membranes were successfully synthesized by a simple solid state reaction. In situ high-temperature X-ray diffraction indicated the good structure stability and phase reversibility of BCFT at high temperatures. The thermal expansion coefficient (TEC) of BCFT was determined to amount 1.02 × 10 -5 K -1, which is smaller than those of Ba0.5Sr0.5Co0.8Fe0.2O3-δ (BSCF) (1.15 × 10 -5 K -1), SrCo0.8Fe0.2O3-δ (SCF) (1.79 × 10 -5 K -1), and BaCo0.4Fe0.4Zr0.2O3-δ (BCFZ) (1.03 10 -5 K -1). It can be seen that the introduction of Ta ions into the perovskite framework could effectively lower the TEC. Thickness dependence studies of oxygen permeation through the BCFT membrane indicated that the oxygen permeation process was controlled by bulk diffusion. A membrane reactor made from BCFT was successfully operated for the partial oxidation of methane to syngas at 900°C for 400 h without failure and with the relatively high, stable oxygen permeation flux of about 16.8 ml/min cm2.
AB - Dense BaCo0.7Fe0.2Ta0.1O3-δ (BCFT) perovskite membranes were successfully synthesized by a simple solid state reaction. In situ high-temperature X-ray diffraction indicated the good structure stability and phase reversibility of BCFT at high temperatures. The thermal expansion coefficient (TEC) of BCFT was determined to amount 1.02 × 10 -5 K -1, which is smaller than those of Ba0.5Sr0.5Co0.8Fe0.2O3-δ (BSCF) (1.15 × 10 -5 K -1), SrCo0.8Fe0.2O3-δ (SCF) (1.79 × 10 -5 K -1), and BaCo0.4Fe0.4Zr0.2O3-δ (BCFZ) (1.03 10 -5 K -1). It can be seen that the introduction of Ta ions into the perovskite framework could effectively lower the TEC. Thickness dependence studies of oxygen permeation through the BCFT membrane indicated that the oxygen permeation process was controlled by bulk diffusion. A membrane reactor made from BCFT was successfully operated for the partial oxidation of methane to syngas at 900°C for 400 h without failure and with the relatively high, stable oxygen permeation flux of about 16.8 ml/min cm2.
KW - Membrane
KW - Mixed conductor
KW - Oxygen separation
KW - Perovskite
KW - POM
UR - http://www.scopus.com/inward/record.url?scp=76749151026&partnerID=8YFLogxK
U2 - 10.1002/aic.12044
DO - 10.1002/aic.12044
M3 - Article
AN - SCOPUS:76749151026
VL - 56
SP - 604
EP - 610
JO - AIChE journal
JF - AIChE journal
SN - 0001-1541
IS - 3
ER -