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Reversible cycling of the oxygen content in co-substituted YBaFeCuO5+δ

Identifieur interne : 001C53 ( Main/Exploration ); précédent : 001C52; suivant : 001C54

Reversible cycling of the oxygen content in co-substituted YBaFeCuO5+δ

Auteurs : T. Rentschler [Allemagne] ; U. Sazama [Allemagne]

Source :

Journal of thermal analysis [ 0022-5215 ] ; 1996-08-01.

RBID : ISTEX:C2E10A52B0064CDC240E3ABB30D55DAE24B57FF0

English descriptors

KwdEn :
- perovskite, reversible oxygen incorporation, thermal reactivity, thermogravimetry.
Teeft :
- Anal, Cation, Chemical composition, Cooling process, Cycling, Feo5 pyramids, Incorporation, Maximum temperature, Oxygen content, Oxygen incorporation, Partial oxidation processes, Perovskite, Perovskite structure, Perovskites, Pure oxygen, Pure oxygen atmosphere, Redox, Rentschler, Reversibility, Reversible cycling, Reversible incorporation, Room temperature, Sazama, Solid state chem, Subsequent cycles, Subsequent heating, Temperature program, Thermal anal, Thermal analysis, Thermoanalytical methods, Thermochemical, Thermogravimetric measurements, Thermogravimetry, Twodimensional structure, Valency.

Abstract

Abstract: The reversible cycling of the oxygen content in layered Co-substituted perovskites of type YBaFeCuO5+δ was investigated applying thermoanalytical methods. For the system YBaCoCu1−xFexO5+δ an increasing amount of oxygen incorporation into the oxygen deficient lattice was found by thermogravimetry for an increasing iron content ofx=0.4 to 0.8. With a cycle of subsequent heating and cooling the reversible incorporation of oxygen on account of redox active cations with mixed valencies could be demonstrated. The combination of several cycles under different gas atmospheres confirmed the reversibility of the oxidation processes suggesting the application for catalytical processes.

Url:

https://api.istex.fr/ark:/67375/1BB-MGQ8VZV1-W/fulltext.pdf

DOI: 10.1007/BF01983976

Affiliations:

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Le document en format XML

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<keywords scheme="Teeft" xml:lang="en"><term>Anal</term>
<term>Cation</term>
<term>Chemical composition</term>
<term>Cooling process</term>
<term>Cycling</term>
<term>Feo5 pyramids</term>
<term>Incorporation</term>
<term>Maximum temperature</term>
<term>Oxygen content</term>
<term>Oxygen incorporation</term>
<term>Partial oxidation processes</term>
<term>Perovskite</term>
<term>Perovskite structure</term>
<term>Perovskites</term>
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<term>Pure oxygen atmosphere</term>
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<term>Rentschler</term>
<term>Reversibility</term>
<term>Reversible cycling</term>
<term>Reversible incorporation</term>
<term>Room temperature</term>
<term>Sazama</term>
<term>Solid state chem</term>
<term>Subsequent cycles</term>
<term>Subsequent heating</term>
<term>Temperature program</term>
<term>Thermal anal</term>
<term>Thermal analysis</term>
<term>Thermoanalytical methods</term>
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<term>Thermogravimetric measurements</term>
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<front><div type="abstract" xml:lang="en">Abstract: The reversible cycling of the oxygen content in layered Co-substituted perovskites of type YBaFeCuO5+δ was investigated applying thermoanalytical methods. For the system YBaCoCu1−xFexO5+δ an increasing amount of oxygen incorporation into the oxygen deficient lattice was found by thermogravimetry for an increasing iron content ofx=0.4 to 0.8. With a cycle of subsequent heating and cooling the reversible incorporation of oxygen on account of redox active cations with mixed valencies could be demonstrated. The combination of several cycles under different gas atmospheres confirmed the reversibility of the oxidation processes suggesting the application for catalytical processes.</div>
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Reversible cycling of the oxygen content in co-substituted YBaFeCuO5+δ

Reversible cycling of the oxygen content in co-substituted YBaFeCuO5+δ

Source :

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri