Effect of A-/B-site Doping on Oxygen Non-Stoichiometry, Structure characteristics, and O2 Releasing Behavior of La1−xCaxCo1−yFeyO3−δ Perovskites
In: Energies, Jg. 12 (2019), Heft 3, S. 410
Online
academicJournal
Zugriff:
Oxy-fuel combustion is one of the proposed technologies with the potential to achieve zero CO2 emission. La1−xCaxCo1−yFeyO3−δ (LCCF) perovskites are promising materials with high selectively for oxygen. In this study, the oxygen non-stoichiometry of perovskites LCCF was investigated by means of iodometric titration. LCCF was prepared using the liquid citrate method, and the phase structures were identified by X-ray diffraction. Fixed-bed experiments were performed to study the oxygen desorption performance of LCCF. The oxygen deficiency of LCCF increased with increasing Ca molar content of A site, but the value of δ of LCCF with increasing Fe molar content in B site is nearly constant. Experimental observation demonstrated that the O2 release amount of LCCF does not depend on oxygen non-stoichiometry δ generated from A-site doping. At the same time, doping Fe in B site has an obvious impact on the oxygen desorption amount.
| Titel: |
Effect of A-/B-site Doping on Oxygen Non-Stoichiometry, Structure characteristics, and O2 Releasing Behavior of La1−xCaxCo1−yFeyO3−δ Perovskites
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| Autor/in / Beteiligte Person: | Shen, Qiuwan ; Li, Shian ; Yang, Guogang ; Sunden, Bengt ; Yuan, Jinliang |
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| Zeitschrift: | Energies, Jg. 12 (2019), Heft 3, S. 410 |
| Veröffentlichung: | MDPI AG, 2019 |
| Medientyp: | academicJournal |
| ISSN: | 1996-1073 (print) |
| DOI: | 10.3390/en12030410 |
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