Details
| Originalsprache | Englisch |
|---|---|
| Seiten (von - bis) | 405-414 |
| Seitenumfang | 10 |
| Fachzeitschrift | Frontiers of Chemical Science and Engineering |
| Jahrgang | 14 |
| Ausgabenummer | 3 |
| Frühes Online-Datum | 11 Nov. 2019 |
| Publikationsstatus | Veröffentlicht - Juni 2020 |
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. [Figure not available: see fulltext.].
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in: Frontiers of Chemical Science and Engineering, Jahrgang 14, Nr. 3, 06.2020, S. 405-414.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - A CO and CO2 tolerating (La0.9Ca0.1)2(Ni0.75Cu0.25)O4+δ Ruddlesden-Popper membrane for oxygen separation
AU - Chen, Guoxing
AU - Widenmeyer, Marc
AU - Tang, Binjie
AU - Kaeswurm, Louise
AU - Wang, Ling
AU - Feldhoff, Armin
AU - Weidenkaff, Anke
N1 - Funding information: This work is part of the project “Plasma-induced CO 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 PXRD measurements, respectively. G. C. thanks Frank Hack and Dr. Angelika Veziridis for their kind support during experiments and discussions. 2? 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 PXRD measurements, respectively. G. C. thanks Frank Hack and Dr. Angelika Veziridis for their kind support during experiments and discussions.
PY - 2020/6
Y1 - 2020/6
N2 - 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. [Figure not available: see fulltext.].
AB - 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. [Figure not available: see fulltext.].
KW - CO and CO resistances
KW - CO plasma resistance
KW - KNiF structure
KW - long-term robustness
KW - oxygen permeation membrane
KW - CO2 and CO resistances
KW - K2NiF4 structure
KW - CO2 plasma resistance
UR - http://www.scopus.com/inward/record.url?scp=85073536800&partnerID=8YFLogxK
U2 - 10.1007/s11705-019-1886-0
DO - 10.1007/s11705-019-1886-0
M3 - Article
AN - SCOPUS:85073536800
VL - 14
SP - 405
EP - 414
JO - Frontiers of Chemical Science and Engineering
JF - Frontiers of Chemical Science and Engineering
SN - 2095-0179
IS - 3
ER -