Effect of A-/B-site doping on oxygen non-stoichiometry, structure characteristics, and O2 releasing behavior of La1−xCaxCo1−yFeyO3−δ perovskites
(2019) In Energies 12(3).- Abstract
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... (More)
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.
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- author
- Shen, Qiuwan LU ; Li, Shian LU ; Yang, Guogang LU ; Sunden, Bengt LU and Yuan, Jinliang LU
- organization
- publishing date
- 2019-01-28
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- CO capture, Crystal structure, Oxygen non-stoichiometry, Oxygen release, Perovskites
- in
- Energies
- volume
- 12
- issue
- 3
- article number
- 410
- publisher
- MDPI AG
- external identifiers
-
- scopus:85060925247
- ISSN
- 1996-1073
- DOI
- 10.3390/en12030410
- language
- English
- LU publication?
- yes
- id
- fee80b9e-3e6a-4843-b8cf-fba3e6737a68
- date added to LUP
- 2019-02-12 09:36:02
- date last changed
- 2022-04-25 21:10:36
@article{fee80b9e-3e6a-4843-b8cf-fba3e6737a68, abstract = {{<p>Oxy-fuel combustion is one of the proposed technologies with the potential to achieve zero CO<sub>2</sub> emission. La<sub>1−x</sub>Ca<sub>x</sub>Co<sub>1−y</sub>Fe<sub>y</sub>O<sub>3−δ</sub> (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 O<sub>2</sub> 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.</p>}}, author = {{Shen, Qiuwan and Li, Shian and Yang, Guogang and Sunden, Bengt and Yuan, Jinliang}}, issn = {{1996-1073}}, keywords = {{CO capture; Crystal structure; Oxygen non-stoichiometry; Oxygen release; Perovskites}}, language = {{eng}}, month = {{01}}, number = {{3}}, publisher = {{MDPI AG}}, series = {{Energies}}, title = {{Effect of A-/B-site doping on oxygen non-stoichiometry, structure characteristics, and O<sub>2</sub> releasing behavior of La<sub>1−x</sub>Ca<sub>x</sub>Co<sub>1−y</sub>Fe<sub>y</sub>O<sub>3−δ</sub> perovskites}}, url = {{http://dx.doi.org/10.3390/en12030410}}, doi = {{10.3390/en12030410}}, volume = {{12}}, year = {{2019}}, }