Details
| Originalsprache | Englisch |
|---|---|
| Aufsatznummer | 1123 |
| Fachzeitschrift | Membranes |
| Jahrgang | 12 |
| Ausgabenummer | 11 |
| Publikationsstatus | Veröffentlicht - 9 Nov. 2022 |
Abstract
High-entropy perovskite oxides have already been studied in various fields owing to their high-entropy-induced properties. Partial substitution of an element by a lower valence element usually improves the oxygen permeability of perovskite oxides, but high substitution amounts may lead to structural instability. In this work, pure high-entropy perovskites Pr (Formula presented.)Sr x(Cr,Mn,Fe,Co,Ni)O (Formula presented.) with high amounts Sr up to (Formula presented.) were synthesized via a sol–gel method. Several characterization methods prove that the solubility of Sr increases with higher temperatures of the heating treatment. The ceramic with (Formula presented.) shows a transition from semi-conductive to metallic behavior when the temperature reaches 873 K. Its oxygen flux is comparable to the low-entropy counterpart La 0.6Sr 0.4Co 0.5Fe 0.5O (Formula presented.). A stable run of ca. 46.2 h was documented for oxygen permeation under an air/CO 2 gradient.
ASJC Scopus Sachgebiete
- Chemische Verfahrenstechnik (insg.)
- Chemische Verfahrenstechnik (sonstige)
- Chemische Verfahrenstechnik (insg.)
- Prozesschemie und -technologie
- Chemische Verfahrenstechnik (insg.)
- Filtration und Separation
Zitieren
- Standard
- Harvard
- Apa
- Vancouver
- BibTex
- RIS
in: Membranes, Jahrgang 12, Nr. 11, 1123, 09.11.2022.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - High-Entropy Perovskites Pr1−xSrx(Cr,Mn,Fe,Co,Ni)O3−δ (x = 0–0.5): Synthesis and Oxygen Permeation Properties
AU - Zhao, Zhijun
AU - Rehder, Lena
AU - Steinbach, Frank
AU - Feldhoff, Armin
N1 - Funding Information: This research was funded by the Deutsche Forschungsgemeinschaft (DFG, German Re- search Foundation)—project number 435833397.
PY - 2022/11/9
Y1 - 2022/11/9
N2 - High-entropy perovskite oxides have already been studied in various fields owing to their high-entropy-induced properties. Partial substitution of an element by a lower valence element usually improves the oxygen permeability of perovskite oxides, but high substitution amounts may lead to structural instability. In this work, pure high-entropy perovskites Pr (Formula presented.)Sr x(Cr,Mn,Fe,Co,Ni)O (Formula presented.) with high amounts Sr up to (Formula presented.) were synthesized via a sol–gel method. Several characterization methods prove that the solubility of Sr increases with higher temperatures of the heating treatment. The ceramic with (Formula presented.) shows a transition from semi-conductive to metallic behavior when the temperature reaches 873 K. Its oxygen flux is comparable to the low-entropy counterpart La 0.6Sr 0.4Co 0.5Fe 0.5O (Formula presented.). A stable run of ca. 46.2 h was documented for oxygen permeation under an air/CO 2 gradient.
AB - High-entropy perovskite oxides have already been studied in various fields owing to their high-entropy-induced properties. Partial substitution of an element by a lower valence element usually improves the oxygen permeability of perovskite oxides, but high substitution amounts may lead to structural instability. In this work, pure high-entropy perovskites Pr (Formula presented.)Sr x(Cr,Mn,Fe,Co,Ni)O (Formula presented.) with high amounts Sr up to (Formula presented.) were synthesized via a sol–gel method. Several characterization methods prove that the solubility of Sr increases with higher temperatures of the heating treatment. The ceramic with (Formula presented.) shows a transition from semi-conductive to metallic behavior when the temperature reaches 873 K. Its oxygen flux is comparable to the low-entropy counterpart La 0.6Sr 0.4Co 0.5Fe 0.5O (Formula presented.). A stable run of ca. 46.2 h was documented for oxygen permeation under an air/CO 2 gradient.
KW - high-entropy oxide
KW - mixed ionic–electronic conducting membrane
KW - oxygen separation
KW - perovskite
KW - sol–gel synthesis
UR - http://www.scopus.com/inward/record.url?scp=85144818716&partnerID=8YFLogxK
U2 - 10.3390/membranes12111123
DO - 10.3390/membranes12111123
M3 - Article
VL - 12
JO - Membranes
JF - Membranes
IS - 11
M1 - 1123
ER -