Details
| Original language | English |
|---|---|
| Article number | 119783 |
| Journal | Journal of membrane science |
| Volume | 639 |
| Early online date | 25 Aug 2021 |
| Publication status | Published - 1 Dec 2021 |
Abstract
In this study, dual-phase membranes 60 wt % Ce0.8M0.2O2–δ (M = La, Pr, Nd, Sm, Gd) - 40 wt % La0.5Sr0.5Fe0.8Cu0.2O3–δ (CMO-LSFCO) were prepared via a combination of EDTA-citric acid complexing sol-gel and mechanical mixture method. Their chemical compatibility, CO2 tolerance, oxygen permeability, conductivity, and long-term regenerative durability regarding the phase structure and composition were systematically studied. Among the studied CMO-LSCFO dual-phase membranes, CGO-LSFCO shows the highest oxygen permeability under air/He and air/CO2 gradients, which can be associated with the small particle size and high electronic conductivity of the CGO phase resulting in a good percolation with different transfer paths based on the correlations between membrane material characterization and oxygen permeability. The comprehensive comparative study presented in this work identifies the critical factors influencing the oxygen permeability, which may provide guidelines for designing further high performance dual-phase oxygen transport membranes.
Keywords
- CO resistance, Dual-phase membrane, Impedance spectroscopy, Oxygen permeability
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. 639, 119783, 01.12.2021.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - A comprehensive comparative study of CO2-resistance and oxygen permeability of 60 wt % Ce0.8M0.2O2–δ (M = La, Pr, Nd, Sm, Gd) - 40 wt % La0.5Sr0.5Fe0.8Cu0.2O3–δ dual-phase membranes
AU - Chen, Guoxing
AU - Zhao, Zhijun
AU - Widenmeyer, Marc
AU - Frömling, Till
AU - Hellmann, Tim
AU - Yan, Ruijuan
AU - Qu, Fangmu
AU - Homm, Gert
AU - Hofmann, Jan P.
AU - Feldhoff, Armin
AU - Weidenkaff, Anke
N1 - Funding Information: This work is part of "Plasma-induced CO 2 -conversion" project (PiCK, project number: 03SFK2S3B) and financially supported by the German Federal Ministry of Education and Research and the NexPlas project (project number: 03SF0618B ). The authors acknowledge funding by the Deutsche Forschungsgemeinschaft (DFG; German Research Foundation) (project number: 435833397 ) and the granted beam time on D1B instrument at the Institut Laue-Langevin (ILL, Grenoble, France, proposal: 5-23-763; DOI: https://doi.ill.fr/10.5291/ILL-DATA.5-23-763 ). The authors are thankful to Maximilian Mellin of TU Darmstadt and Vivian Nassif (Institut Laue-Langevin, France) for their kind supports during the XPS measurements and neutron diffraction measurements, respectively.
PY - 2021/12/1
Y1 - 2021/12/1
N2 - In this study, dual-phase membranes 60 wt % Ce0.8M0.2O2–δ (M = La, Pr, Nd, Sm, Gd) - 40 wt % La0.5Sr0.5Fe0.8Cu0.2O3–δ (CMO-LSFCO) were prepared via a combination of EDTA-citric acid complexing sol-gel and mechanical mixture method. Their chemical compatibility, CO2 tolerance, oxygen permeability, conductivity, and long-term regenerative durability regarding the phase structure and composition were systematically studied. Among the studied CMO-LSCFO dual-phase membranes, CGO-LSFCO shows the highest oxygen permeability under air/He and air/CO2 gradients, which can be associated with the small particle size and high electronic conductivity of the CGO phase resulting in a good percolation with different transfer paths based on the correlations between membrane material characterization and oxygen permeability. The comprehensive comparative study presented in this work identifies the critical factors influencing the oxygen permeability, which may provide guidelines for designing further high performance dual-phase oxygen transport membranes.
AB - In this study, dual-phase membranes 60 wt % Ce0.8M0.2O2–δ (M = La, Pr, Nd, Sm, Gd) - 40 wt % La0.5Sr0.5Fe0.8Cu0.2O3–δ (CMO-LSFCO) were prepared via a combination of EDTA-citric acid complexing sol-gel and mechanical mixture method. Their chemical compatibility, CO2 tolerance, oxygen permeability, conductivity, and long-term regenerative durability regarding the phase structure and composition were systematically studied. Among the studied CMO-LSCFO dual-phase membranes, CGO-LSFCO shows the highest oxygen permeability under air/He and air/CO2 gradients, which can be associated with the small particle size and high electronic conductivity of the CGO phase resulting in a good percolation with different transfer paths based on the correlations between membrane material characterization and oxygen permeability. The comprehensive comparative study presented in this work identifies the critical factors influencing the oxygen permeability, which may provide guidelines for designing further high performance dual-phase oxygen transport membranes.
KW - CO resistance
KW - Dual-phase membrane
KW - Impedance spectroscopy
KW - Oxygen permeability
UR - http://www.scopus.com/inward/record.url?scp=85113505054&partnerID=8YFLogxK
U2 - 10.1016/j.memsci.2021.119783
DO - 10.1016/j.memsci.2021.119783
M3 - Article
AN - SCOPUS:85113505054
VL - 639
JO - Journal of membrane science
JF - Journal of membrane science
SN - 0376-7388
M1 - 119783
ER -