A new CO2-resistant Ruddlesden-Popper oxide with superior oxygen transport
A-site deficient (Pr0.9La0.1)1.9(Ni0.74Cu0.21Ga0.05)O4+δ
- verfasst von
- Jian Xue, Qing Liao, Wei Chen, Henny J.M. Bouwmeester, Haihui Wang, Armin Feldhoff
- Abstract
A-site deficient (Pr0.9La0.1)1.9Ni0.74Cu0.21Ga0.05O4+δ ((PL)1.9NCG), with the K2NiF4 structure, is found to exhibit higher oxygen transport rates compared with its cation-stoichiometric parent phase. A stable oxygen permeation flux of 4.6 × 10-7 mol cm-2 s-1 at 900 °C at a membrane thickness of 0.6 mm is measured, using either helium or pure CO2 as sweep gas at a flow rate of 30 mL min-1. The oxygen flux is more than two times higher than that observed through A-site stoichiometric (PL)2.0NCG membranes operated under similar conditions. The high oxygen transport rates found for (PL)1.9NCG are attributed to highly mobile oxygen vacancies, compensating A-site deficiency. The high stability against carbonation gives (PL)1.9NCG potential for use, e.g., as a membrane in oxy-fuel combustion processes with CO2 capture.
- Organisationseinheit(en)
-
Institut für Physikalische Chemie und Elektrochemie
- Externe Organisation(en)
-
South China University of Technology
University of Twente
University of Adelaide
- Typ
- Artikel
- Journal
- Journal of Materials Chemistry A
- Band
- 3
- Seiten
- 19107-19114
- Anzahl der Seiten
- 8
- ISSN
- 2050-7488
- Publikationsdatum
- 10.08.2015
- Publikationsstatus
- Veröffentlicht
- Peer-reviewed
- Ja
- ASJC Scopus Sachgebiete
- Allgemeine Chemie, Erneuerbare Energien, Nachhaltigkeit und Umwelt, Allgemeine Materialwissenschaften
- Ziele für nachhaltige Entwicklung
- SDG 7 – Erschwingliche und saubere Energie
- Elektronische Version(en)
-
https://www.repo.uni-hannover.de/bitstream/123456789/152/1/c5ta02514a.pdf (Zugang:
Offen)
https://doi.org/10.1039/c5ta02514a (Zugang: Geschlossen)
