Details
| Original language | English |
|---|---|
| Article number | 118023 |
| Journal | Separation and Purification Technology |
| Volume | 259 |
| Early online date | 12 Nov 2020 |
| Publication status | Published - 15 Mar 2021 |
Abstract
The effects of grain size and wall thickness on the oxygen transport mechanism of (La0.6Ca0.4)(Co0.8Fe0.2)O3-δ hollow fiber membranes were investigated. For this purpose, hollow fiber membranes of different geometry were prepared with different spinnerets via phase inversion spinning and subsequently sintered at different temperatures. The influence of the manufacturing conditions on the LCCF microstructure were analysed by SEM, XRD and TEM. With increasing sintering temperature, the grain size increased from 0.4 µm2 at 1070 °C to 19.5 µm2 at 1245 °C. With bigger grain sizes and lower wall thickness, the oxygen flux shows an increase up to 6.2 ml min−1 cm−2 (at 1000 °C) in a 50% CO2 atmosphere. This finding implies that the grain boundaries act as oxygen diffusion barriers.
Keywords
- Ceramic hollow fiber membrane, CO resistance, Mixed ionic electronic conductor, Oxygen separation, Oxygen transport
ASJC Scopus subject areas
- Chemistry(all)
- Analytical Chemistry
- Chemical Engineering(all)
- Filtration and Separation
Cite this
- Standard
- Harvard
- Apa
- Vancouver
- BibTeX
- RIS
In: Separation and Purification Technology, Vol. 259, 118023, 15.03.2021.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Permeation improvement of LCCF hollow fiber membranes by spinning and sintering optimization
AU - Buck, Frederic
AU - Feldhoff, Armin
AU - Caro, Jürgen
AU - Schiestel, Thomas
N1 - Funding Information: This work is part of the project “Plasma-induced CO 2 -conversion” (PiCK, project number: 03SFK2S3) and financially supported by the German Federal Ministry of Education and Research in the framework of the “Kopernikus projects for the Energiewende”.
PY - 2021/3/15
Y1 - 2021/3/15
N2 - The effects of grain size and wall thickness on the oxygen transport mechanism of (La0.6Ca0.4)(Co0.8Fe0.2)O3-δ hollow fiber membranes were investigated. For this purpose, hollow fiber membranes of different geometry were prepared with different spinnerets via phase inversion spinning and subsequently sintered at different temperatures. The influence of the manufacturing conditions on the LCCF microstructure were analysed by SEM, XRD and TEM. With increasing sintering temperature, the grain size increased from 0.4 µm2 at 1070 °C to 19.5 µm2 at 1245 °C. With bigger grain sizes and lower wall thickness, the oxygen flux shows an increase up to 6.2 ml min−1 cm−2 (at 1000 °C) in a 50% CO2 atmosphere. This finding implies that the grain boundaries act as oxygen diffusion barriers.
AB - The effects of grain size and wall thickness on the oxygen transport mechanism of (La0.6Ca0.4)(Co0.8Fe0.2)O3-δ hollow fiber membranes were investigated. For this purpose, hollow fiber membranes of different geometry were prepared with different spinnerets via phase inversion spinning and subsequently sintered at different temperatures. The influence of the manufacturing conditions on the LCCF microstructure were analysed by SEM, XRD and TEM. With increasing sintering temperature, the grain size increased from 0.4 µm2 at 1070 °C to 19.5 µm2 at 1245 °C. With bigger grain sizes and lower wall thickness, the oxygen flux shows an increase up to 6.2 ml min−1 cm−2 (at 1000 °C) in a 50% CO2 atmosphere. This finding implies that the grain boundaries act as oxygen diffusion barriers.
KW - Ceramic hollow fiber membrane
KW - CO resistance
KW - Mixed ionic electronic conductor
KW - Oxygen separation
KW - Oxygen transport
UR - http://www.scopus.com/inward/record.url?scp=85097741253&partnerID=8YFLogxK
U2 - 10.1016/j.seppur.2020.118023
DO - 10.1016/j.seppur.2020.118023
M3 - Article
AN - SCOPUS:85097741253
VL - 259
JO - Separation and Purification Technology
JF - Separation and Purification Technology
SN - 1383-5866
M1 - 118023
ER -