Chen, Guoxing ; Widenmeyer, Marc ; Tang, Binjie ; Kaeswurm, Louise ; Wang, Ling ; Feldhoff, Armin ; Weidenkaff, Anke (2020)
A CO and CO2 tolerating (La0.9Ca0.1)2(Ni0.75Cu0.25)O4+δ Ruddlesden-Popper membrane for oxygen separation.
In: Frontiers of Chemical Science and Engineering, 14 (3)
doi: 10.1007/s11705-019-1886-0
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
A series of novel dense mixed conducting ceramic membranes based on K2NiF4-type (La1−xCax)2 (Ni0.75Cu0.25)O4+δ was successfully prepared through a sol-gel route. Their chemical compatibility, oxygen permeability, CO and CO2 tolerance, and long-term CO2 resistance regarding phase composition and crystal structure at different atmospheres were studied. The results show that higher Ca contents in the material lead to the formation of CaCO3. A constant oxygen permeation flux of about 0.63 mL·min−1·cm−2 at 1173 K through a 0.65 mm thick membrane was measured for (La0.9Ca0.1)2 (Ni0.75Cu0.25)O4+δ, using either helium or pure CO2 as sweep gas. Steady oxygen fluxes with no sign of deterioration of this membrane were observed with increasing CO2 concentration. The membrane showed excellent chemical stability towards CO2 for more than 1360 h and phase stability in presence of CO for 4 h at high temperature. In addition, this membrane did not deteriorate in a high-energy CO2 plasma. The present work demonstrates that this (La0.9Ca0.1)2(Ni0.75Cu0.25)O4+δ membrane is a promising chemically robust candidate for oxygen separation applications.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2020 |
| Autor(en): | Chen, Guoxing ; Widenmeyer, Marc ; Tang, Binjie ; Kaeswurm, Louise ; Wang, Ling ; Feldhoff, Armin ; Weidenkaff, Anke |
| Art des Eintrags: | Bibliographie |
| Titel: | A CO and CO2 tolerating (La0.9Ca0.1)2(Ni0.75Cu0.25)O4+δ Ruddlesden-Popper membrane for oxygen separation |
| Sprache: | Englisch |
| Publikationsjahr: | Juni 2020 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Frontiers of Chemical Science and Engineering |
| Jahrgang/Volume einer Zeitschrift: | 14 |
| (Heft-)Nummer: | 3 |
| DOI: | 10.1007/s11705-019-1886-0 |
| URL / URN: | https://doi.org/10.1007/s11705-019-1886-0 |
| Kurzbeschreibung (Abstract): | A series of novel dense mixed conducting ceramic membranes based on K2NiF4-type (La1−xCax)2 (Ni0.75Cu0.25)O4+δ was successfully prepared through a sol-gel route. Their chemical compatibility, oxygen permeability, CO and CO2 tolerance, and long-term CO2 resistance regarding phase composition and crystal structure at different atmospheres were studied. The results show that higher Ca contents in the material lead to the formation of CaCO3. A constant oxygen permeation flux of about 0.63 mL·min−1·cm−2 at 1173 K through a 0.65 mm thick membrane was measured for (La0.9Ca0.1)2 (Ni0.75Cu0.25)O4+δ, using either helium or pure CO2 as sweep gas. Steady oxygen fluxes with no sign of deterioration of this membrane were observed with increasing CO2 concentration. The membrane showed excellent chemical stability towards CO2 for more than 1360 h and phase stability in presence of CO for 4 h at high temperature. In addition, this membrane did not deteriorate in a high-energy CO2 plasma. The present work demonstrates that this (La0.9Ca0.1)2(Ni0.75Cu0.25)O4+δ membrane is a promising chemically robust candidate for oxygen separation applications. |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Werkstofftechnik und Ressourcenmanagement |
| Hinterlegungsdatum: | 20 Mai 2020 07:04 |
| Letzte Änderung: | 20 Mai 2020 07:04 |
| PPN: | |
| Projekte: | This work is part of the project “Plasma-induced CO2− conversion” (PiCK, project number: 03SFK2S3B) and financially supported by the German Federal Ministry of Education and Research in the framework of the “Kopernikus projects for the Energiewende”., The authors are thankful to B.Sc. Laura Steinle (University of Stuttgart) for her assistance during the CO stability tests, and Christine Stefani and Prof. Dr. Robert Dinnebier (Max Planck Institute for Solid State Research, Stuttgart) for the in situ PXR, G. C. thanks Frank Hack and Dr. Angelika Veziridis for their kind support during experiments and discussions. |
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