Chen, Guoxing ; Zhao, Zhijun ; Widenmeyer, Marc ; Frömling, Till ; Hellmann, Tim ; Yan, Ruijuan ; Qu, Fangmu ; Homm, Gert ; Hofmann, Jan P. ; Feldhoff, Armin ; Weidenkaff, Anke (2021)
A comprehensive comparative study of CO2-resistance and oxygen permeability of 60 wt % Ce0.8M0.2O2– (M = la, Pr, Nd, Sm, Gd) - 40 wt % La0.5Sr0.5Fe0.8Cu0.2O3– dual-phase membranes.
In: Journal of Membrane Science, 639
doi: 10.1016/j.memsci.2021.119783
Artikel, Bibliographie
Kurzbeschreibung (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.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2021 |
| Autor(en): | Chen, Guoxing ; Zhao, Zhijun ; Widenmeyer, Marc ; Frömling, Till ; Hellmann, Tim ; Yan, Ruijuan ; Qu, Fangmu ; Homm, Gert ; Hofmann, Jan P. ; Feldhoff, Armin ; Weidenkaff, Anke |
| Art des Eintrags: | Bibliographie |
| Titel: | A comprehensive comparative study of CO2-resistance and oxygen permeability of 60 wt % Ce0.8M0.2O2– (M = la, Pr, Nd, Sm, Gd) - 40 wt % La0.5Sr0.5Fe0.8Cu0.2O3– dual-phase membranes |
| Sprache: | Englisch |
| Publikationsjahr: | 1 Dezember 2021 |
| Verlag: | Elsevier |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of Membrane Science |
| Jahrgang/Volume einer Zeitschrift: | 639 |
| DOI: | 10.1016/j.memsci.2021.119783 |
| URL / URN: | https://www.sciencedirect.com/science/article/abs/pii/S03767... |
| Kurzbeschreibung (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. |
| Freie Schlagworte: | Dual-phase membrane, Oxygen permeability, O2 resistance, Impedance spectroscopy |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Disperse Feststoffe 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Nichtmetallisch-Anorganische Werkstoffe 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Oberflächenforschung 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Werkstofftechnik und Ressourcenmanagement |
| Hinterlegungsdatum: | 26 Aug 2021 06:03 |
| Letzte Änderung: | 12 Okt 2021 09:46 |
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