Defect Chemistry and Chemical Looping Performance of La(1−x)M(x)MnO(3) (M = Sr, Ca, (x = 0–0.5)) Perovskites

La(1−x)M(x)MnO(3) (M = Sr, Ca, (x = 0–0.5)) materials of the perovskite structure are synthesized by a co-precipitation method. They are subsequently investigated for their performance in a chemical looping process (fuel CH(4)) using thermogravimetric analysis with simultaneous reaction. The goal of...

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Autores principales: Evdou, Antigoni, Georgitsis, Theofilos, Matsouka, Charitini, Pachatouridou, Eleni, Iliopoulou, Eleni, Zaspalis, Vassilios
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9565819/
https://www.ncbi.nlm.nih.gov/pubmed/36234588
http://dx.doi.org/10.3390/nano12193461
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author Evdou, Antigoni
Georgitsis, Theofilos
Matsouka, Charitini
Pachatouridou, Eleni
Iliopoulou, Eleni
Zaspalis, Vassilios
author_facet Evdou, Antigoni
Georgitsis, Theofilos
Matsouka, Charitini
Pachatouridou, Eleni
Iliopoulou, Eleni
Zaspalis, Vassilios
author_sort Evdou, Antigoni
collection PubMed
description La(1−x)M(x)MnO(3) (M = Sr, Ca, (x = 0–0.5)) materials of the perovskite structure are synthesized by a co-precipitation method. They are subsequently investigated for their performance in a chemical looping process (fuel CH(4)) using thermogravimetric analysis with simultaneous reaction. The goal of this work is to determine the relation between the defect chemistry of the materials and their behavior in chemical looping processes. A defect model is proposed that provides an explanation of the dependency of the Oxygen Transfer Capacity and of the CO(2)/CO selectivity on composition. It appeared that the fuel may react with various types of oxygen available within the materials, generated by different mechanisms. The relative amounts of each oxygen type determine the CO(2)/CO selectivity and depend on the material composition as well as on the partial pressure of oxygen used for regenerating the materials.
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spelling pubmed-95658192022-10-15 Defect Chemistry and Chemical Looping Performance of La(1−x)M(x)MnO(3) (M = Sr, Ca, (x = 0–0.5)) Perovskites Evdou, Antigoni Georgitsis, Theofilos Matsouka, Charitini Pachatouridou, Eleni Iliopoulou, Eleni Zaspalis, Vassilios Nanomaterials (Basel) Article La(1−x)M(x)MnO(3) (M = Sr, Ca, (x = 0–0.5)) materials of the perovskite structure are synthesized by a co-precipitation method. They are subsequently investigated for their performance in a chemical looping process (fuel CH(4)) using thermogravimetric analysis with simultaneous reaction. The goal of this work is to determine the relation between the defect chemistry of the materials and their behavior in chemical looping processes. A defect model is proposed that provides an explanation of the dependency of the Oxygen Transfer Capacity and of the CO(2)/CO selectivity on composition. It appeared that the fuel may react with various types of oxygen available within the materials, generated by different mechanisms. The relative amounts of each oxygen type determine the CO(2)/CO selectivity and depend on the material composition as well as on the partial pressure of oxygen used for regenerating the materials. MDPI 2022-10-03 /pmc/articles/PMC9565819/ /pubmed/36234588 http://dx.doi.org/10.3390/nano12193461 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Evdou, Antigoni
Georgitsis, Theofilos
Matsouka, Charitini
Pachatouridou, Eleni
Iliopoulou, Eleni
Zaspalis, Vassilios
Defect Chemistry and Chemical Looping Performance of La(1−x)M(x)MnO(3) (M = Sr, Ca, (x = 0–0.5)) Perovskites
title Defect Chemistry and Chemical Looping Performance of La(1−x)M(x)MnO(3) (M = Sr, Ca, (x = 0–0.5)) Perovskites
title_full Defect Chemistry and Chemical Looping Performance of La(1−x)M(x)MnO(3) (M = Sr, Ca, (x = 0–0.5)) Perovskites
title_fullStr Defect Chemistry and Chemical Looping Performance of La(1−x)M(x)MnO(3) (M = Sr, Ca, (x = 0–0.5)) Perovskites
title_full_unstemmed Defect Chemistry and Chemical Looping Performance of La(1−x)M(x)MnO(3) (M = Sr, Ca, (x = 0–0.5)) Perovskites
title_short Defect Chemistry and Chemical Looping Performance of La(1−x)M(x)MnO(3) (M = Sr, Ca, (x = 0–0.5)) Perovskites
title_sort defect chemistry and chemical looping performance of la(1−x)m(x)mno(3) (m = sr, ca, (x = 0–0.5)) perovskites
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9565819/
https://www.ncbi.nlm.nih.gov/pubmed/36234588
http://dx.doi.org/10.3390/nano12193461
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