Details
| Original language | English |
|---|---|
| Pages (from-to) | 132-137 |
| Number of pages | 6 |
| Journal | Journal of membrane science |
| Volume | 364 |
| Issue number | 1-2 |
| Early online date | 14 Aug 2010 |
| Publication status | Published - 15 Nov 2010 |
Abstract
The influence of CO2 on the oxygen permeation performance of perovskite-type BaCoxFeyZrzO3-δ (BCFZ, x+y+z=1) hollow fiber membrane under different experimental conditions is presented. Helium with various partial pressures of CO2 was applied as sweep gas at different temperatures on the shell side of the hollow fiber leading to a decrease and finally drop to zero of the oxygen permeation while feeding air on the core side due to carbonate formation. Repeated cycles of changing the sweep gas between the CO2/He mixture and pure He were conducted in order to check the reversibility of the carbonate formation. The analysis of the microstructure after permeation experiments was carried out by X-ray diffraction (XRD) as well as by scanning electron microscope (SEM). It was found that both microstructure as well as oxygen permeation are recovered in a CO2-free atmosphere like pure He on the shell side while feeding air on the core side. Under exposure of 50% CO2 in He for 5h, the perovskite structure is impaired up to a depth of ca. 15μm and approximately 30μm after 10h, respectively.
Keywords
- BCFZ, CO stability, Membrane reactor, Oxygen conductor, Perovskite membrane
ASJC Scopus subject areas
- Biochemistry, Genetics and Molecular Biology(all)
- Biochemistry
- Materials Science(all)
- Chemistry(all)
- Physical and Theoretical Chemistry
- Chemical Engineering(all)
- Filtration and Separation
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In: Journal of membrane science, Vol. 364, No. 1-2, 15.11.2010, p. 132-137.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Influence of CO2 on the oxygen permeation performance of perovskite-type BaCoxFeyZrzO3-δ hollow fiber membranes
AU - Czuprat, Oliver
AU - Arnold, Mirko
AU - Schirrmeister, Steffen
AU - Schiestel, Thomas
AU - Caro, Jürgen
PY - 2010/11/15
Y1 - 2010/11/15
N2 - The influence of CO2 on the oxygen permeation performance of perovskite-type BaCoxFeyZrzO3-δ (BCFZ, x+y+z=1) hollow fiber membrane under different experimental conditions is presented. Helium with various partial pressures of CO2 was applied as sweep gas at different temperatures on the shell side of the hollow fiber leading to a decrease and finally drop to zero of the oxygen permeation while feeding air on the core side due to carbonate formation. Repeated cycles of changing the sweep gas between the CO2/He mixture and pure He were conducted in order to check the reversibility of the carbonate formation. The analysis of the microstructure after permeation experiments was carried out by X-ray diffraction (XRD) as well as by scanning electron microscope (SEM). It was found that both microstructure as well as oxygen permeation are recovered in a CO2-free atmosphere like pure He on the shell side while feeding air on the core side. Under exposure of 50% CO2 in He for 5h, the perovskite structure is impaired up to a depth of ca. 15μm and approximately 30μm after 10h, respectively.
AB - The influence of CO2 on the oxygen permeation performance of perovskite-type BaCoxFeyZrzO3-δ (BCFZ, x+y+z=1) hollow fiber membrane under different experimental conditions is presented. Helium with various partial pressures of CO2 was applied as sweep gas at different temperatures on the shell side of the hollow fiber leading to a decrease and finally drop to zero of the oxygen permeation while feeding air on the core side due to carbonate formation. Repeated cycles of changing the sweep gas between the CO2/He mixture and pure He were conducted in order to check the reversibility of the carbonate formation. The analysis of the microstructure after permeation experiments was carried out by X-ray diffraction (XRD) as well as by scanning electron microscope (SEM). It was found that both microstructure as well as oxygen permeation are recovered in a CO2-free atmosphere like pure He on the shell side while feeding air on the core side. Under exposure of 50% CO2 in He for 5h, the perovskite structure is impaired up to a depth of ca. 15μm and approximately 30μm after 10h, respectively.
KW - BCFZ
KW - CO stability
KW - Membrane reactor
KW - Oxygen conductor
KW - Perovskite membrane
UR - http://www.scopus.com/inward/record.url?scp=77957938683&partnerID=8YFLogxK
U2 - 10.1016/j.memsci.2010.08.019
DO - 10.1016/j.memsci.2010.08.019
M3 - Article
AN - SCOPUS:77957938683
VL - 364
SP - 132
EP - 137
JO - Journal of membrane science
JF - Journal of membrane science
SN - 0376-7388
IS - 1-2
ER -