Vieten, Josua and Bulfin, Brendan and Call, Friedemann and Lange, Matthias and Schmücker, Martin and Francke, Alexander and Roeb, Martin and Sattler, Christian (2016) Perovskite oxides for application in thermochemical air separation and Oxygen storage. Journal of Materials Chemistry A (4), pp. 13652-13659. Royal Society of Chemistry. doi: 10.1039/c6ta04867f. ISSN 2050-7488.
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Official URL: http://pubs.rsc.org/en/Content/ArticleLanding/2016/TA/c6ta04867f#!divAbstract
Abstract
Perovskites AMO3�d are ideal for thermochemical air separation due to their oxygen nonstoichiometry d, which can be varied by changing the temperature and oxygen partial pressure. We show in this work how materials can be selected for chemical looping air separation from thermodynamic considerations and present thermogravimetric experiments carried out on (Ca,Sr) ferrites and manganites, and doped variants, all synthesized via a citric acid auto-combustion method. SrFe0.95Cu0.05O3�d and Ca0.8Sr0.2MnO3�d show the best gravimetric oxygen storage capacity of all tested materials at T < 1200 �C. The redox reactions are completed in <1 min in air and are highly reversible. A significant reoxidation reaction of reduced samples was observed at temperatures as low as 250 �C at an Oxygen partial pressure of 0.16 bar. We studied phase formation via XRD and lattice expansion during reduction via in situ XRD experiments. The objective is to validate the potential and boundary conditions of such materials to pave the way for competitive air separation based on thermochemical cycling.
Item URL in elib: | https://elib.dlr.de/108211/ | ||||||||||||||||||||||||||||||||||||
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Document Type: | Article | ||||||||||||||||||||||||||||||||||||
Additional Information: | ISI referiertes Journal | ||||||||||||||||||||||||||||||||||||
Title: | Perovskite oxides for application in thermochemical air separation and Oxygen storage | ||||||||||||||||||||||||||||||||||||
Authors: |
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Date: | 8 August 2016 | ||||||||||||||||||||||||||||||||||||
Journal or Publication Title: | Journal of Materials Chemistry A | ||||||||||||||||||||||||||||||||||||
Refereed publication: | Yes | ||||||||||||||||||||||||||||||||||||
Open Access: | No | ||||||||||||||||||||||||||||||||||||
Gold Open Access: | No | ||||||||||||||||||||||||||||||||||||
In SCOPUS: | Yes | ||||||||||||||||||||||||||||||||||||
In ISI Web of Science: | Yes | ||||||||||||||||||||||||||||||||||||
DOI: | 10.1039/c6ta04867f | ||||||||||||||||||||||||||||||||||||
Page Range: | pp. 13652-13659 | ||||||||||||||||||||||||||||||||||||
Publisher: | Royal Society of Chemistry | ||||||||||||||||||||||||||||||||||||
ISSN: | 2050-7488 | ||||||||||||||||||||||||||||||||||||
Status: | Published | ||||||||||||||||||||||||||||||||||||
Keywords: | perovskite, redox reaction, air separation, Oxygen storage | ||||||||||||||||||||||||||||||||||||
HGF - Research field: | Energy | ||||||||||||||||||||||||||||||||||||
HGF - Program: | Renewable Energies | ||||||||||||||||||||||||||||||||||||
HGF - Program Themes: | Solar Fuels | ||||||||||||||||||||||||||||||||||||
DLR - Research area: | Energy | ||||||||||||||||||||||||||||||||||||
DLR - Program: | E SF - Solar research | ||||||||||||||||||||||||||||||||||||
DLR - Research theme (Project): | E - Solar Fuels (old) | ||||||||||||||||||||||||||||||||||||
Location: | Jülich , Köln-Porz | ||||||||||||||||||||||||||||||||||||
Institutes and Institutions: | Institute of Solar Research > Solare Verfahrenstechnik Institute of Materials Research > Keramische Strukturwerkstoffe | ||||||||||||||||||||||||||||||||||||
Deposited By: | Sattler, Prof. Dr. Christian | ||||||||||||||||||||||||||||||||||||
Deposited On: | 24 Nov 2016 09:34 | ||||||||||||||||||||||||||||||||||||
Last Modified: | 08 Nov 2023 15:20 |
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