Synthesis of LaFeO3 perovskite-type oxide via solid-state combustion of a cyano complex precursor: The effect of oxygen diffusion
dc.contributor.author
dc.date.accessioned
2017-01-24T11:33:03Z
dc.date.available
2021-04-07T08:03:00Z
dc.date.issued
2017-02-15
dc.identifier.issn
0272-8842
dc.identifier.uri
dc.description.abstract
The effect of oxygen diffusion on the thermal decomposition kinetics of La[Fe(CN)6]·5H2O has been explored. In particular, the critical conditions under which LaFeO3 can be synthesized via solid-state combustion of this cyano complex precursor were analytically and numerically investigated. Thermal analysis experiments as well as simulations showed that the oxygen diffusion enhancement facilitates the formation of a self-propagating combustion front during the decomposition of La[Fe(CN)6]·5H2O. As a consequence, the sample undergoes local overheating that raises its temperature by several hundreds of degrees. This enables the production of LaFeO3 perovskite-type oxide with a minimum contribution of external heat resources. Although the self-propagating high-temperature method has already proven to be successful for the synthesis of perovskite-type oxides from cyano complex precursors under oxygen atmosphere, we will show that under the appropriate settings, air can be used instead. Moreover, the temperature of the front is related to the ease of oxygen diffusion. Therefore, the surface area and the crystal size of LaFeO3 perovskite-type powders obtained via solid state combustion have been controlled by controlling the gas flow rate at which the sample has been exposed during the treatment
dc.format.extent
10 p.
dc.format.mimetype
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier
dc.relation.isformatof
Versió postprint del document publicat a: https://doi.org/10.1016/j.ceramint.2016.11.134
dc.relation.ispartof
© Ceramics International, 2017, vol. 43, núm. 3, p. 3156-3165
dc.relation.ispartofseries
Articles publicats (D-F)
dc.rights
Tots els drets reservats
dc.source
Sánchez-Rodríguez, Daniel Wada, Hiroki Yamaguchi, Syuhei Farjas Silva, Jordi Yahiro, Hidenori 2017 Synthesis of LaFeO3 perovskite-type oxide via solid-state combustion of a cyano complex precursor: The effect of oxygen diffusion Ceramics International 43 3 3156 3165
dc.title
Synthesis of LaFeO3 perovskite-type oxide via solid-state combustion of a cyano complex precursor: The effect of oxygen diffusion
dc.type
info:eu-repo/semantics/article
dc.rights.accessRights
info:eu-repo/semantics/openAccess
dc.embargo.terms
2019-02-15
dc.date.embargoEndDate
info:eu-repo/date/embargoEnd/2019-02-15
dc.type.version
info:eu-repo/semantics/acceptedVersion
dc.identifier.doi
dc.identifier.idgrec
026199