Synthesis and characterization of La1-xSr xMnO3±δ powders obtained by the polymeric precursor route

Detalhes bibliográficos
Autor(a) principal: Rabelo,Adriano Alves
Data de Publicação: 2011
Outros Autores: Macedo,Marfran Cardoso de, Melo,Dulce Maria de Araújo, Paskocimas,Carlos Alberto, Martinelli,Antonio Eduardo, Nascimento,Rubens Maribondo do
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Materials research (São Carlos. Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392011000100015
Resumo: Polycrystalline strontium-doped lanthanum manganite (LSM) powders with 0.15, 0.22, and 0.30 mol % Sr were synthesized by the polymeric precursor route using a molar ratio of 3:1 citric acid and metal cations. The powders were characterized by Fourier transform infrared spectroscopy, thermal analysis, high-temperature X-ray diffraction to determine the crystalline perovskite phase and crystallite sizes, scanning electron microscopy for the morphological analysis, nitrogen adsorption to determine the specific surface area, and laser scattering to evaluate the particle size distribution. The LSM perovskite-type oxides containing intermediate 0.22 mol % Sr were found to exhibit a tendency to decrease in crystallite size and increase in specific surface area and, when calcined at 700-900 ºC exhibited a pure phase of perovskite, had a crystallite size of about 17-20 nm and a specific surface area for 900 ºC of 34.3 m².g-1.
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spelling Synthesis and characterization of La1-xSr xMnO3±δ powders obtained by the polymeric precursor routeperovskitepolymeric precursorSOFCPolycrystalline strontium-doped lanthanum manganite (LSM) powders with 0.15, 0.22, and 0.30 mol % Sr were synthesized by the polymeric precursor route using a molar ratio of 3:1 citric acid and metal cations. The powders were characterized by Fourier transform infrared spectroscopy, thermal analysis, high-temperature X-ray diffraction to determine the crystalline perovskite phase and crystallite sizes, scanning electron microscopy for the morphological analysis, nitrogen adsorption to determine the specific surface area, and laser scattering to evaluate the particle size distribution. The LSM perovskite-type oxides containing intermediate 0.22 mol % Sr were found to exhibit a tendency to decrease in crystallite size and increase in specific surface area and, when calcined at 700-900 ºC exhibited a pure phase of perovskite, had a crystallite size of about 17-20 nm and a specific surface area for 900 ºC of 34.3 m².g-1.ABM, ABC, ABPol2011-03-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392011000100015Materials Research v.14 n.1 2011reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/S1516-14392011005000018info:eu-repo/semantics/openAccessRabelo,Adriano AlvesMacedo,Marfran Cardoso deMelo,Dulce Maria de AraújoPaskocimas,Carlos AlbertoMartinelli,Antonio EduardoNascimento,Rubens Maribondo doeng2011-04-15T00:00:00Zoai:scielo:S1516-14392011000100015Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2011-04-15T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false
dc.title.none.fl_str_mv Synthesis and characterization of La1-xSr xMnO3±δ powders obtained by the polymeric precursor route
title Synthesis and characterization of La1-xSr xMnO3±δ powders obtained by the polymeric precursor route
spellingShingle Synthesis and characterization of La1-xSr xMnO3±δ powders obtained by the polymeric precursor route
Rabelo,Adriano Alves
perovskite
polymeric precursor
SOFC
title_short Synthesis and characterization of La1-xSr xMnO3±δ powders obtained by the polymeric precursor route
title_full Synthesis and characterization of La1-xSr xMnO3±δ powders obtained by the polymeric precursor route
title_fullStr Synthesis and characterization of La1-xSr xMnO3±δ powders obtained by the polymeric precursor route
title_full_unstemmed Synthesis and characterization of La1-xSr xMnO3±δ powders obtained by the polymeric precursor route
title_sort Synthesis and characterization of La1-xSr xMnO3±δ powders obtained by the polymeric precursor route
author Rabelo,Adriano Alves
author_facet Rabelo,Adriano Alves
Macedo,Marfran Cardoso de
Melo,Dulce Maria de Araújo
Paskocimas,Carlos Alberto
Martinelli,Antonio Eduardo
Nascimento,Rubens Maribondo do
author_role author
author2 Macedo,Marfran Cardoso de
Melo,Dulce Maria de Araújo
Paskocimas,Carlos Alberto
Martinelli,Antonio Eduardo
Nascimento,Rubens Maribondo do
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Rabelo,Adriano Alves
Macedo,Marfran Cardoso de
Melo,Dulce Maria de Araújo
Paskocimas,Carlos Alberto
Martinelli,Antonio Eduardo
Nascimento,Rubens Maribondo do
dc.subject.por.fl_str_mv perovskite
polymeric precursor
SOFC
topic perovskite
polymeric precursor
SOFC
description Polycrystalline strontium-doped lanthanum manganite (LSM) powders with 0.15, 0.22, and 0.30 mol % Sr were synthesized by the polymeric precursor route using a molar ratio of 3:1 citric acid and metal cations. The powders were characterized by Fourier transform infrared spectroscopy, thermal analysis, high-temperature X-ray diffraction to determine the crystalline perovskite phase and crystallite sizes, scanning electron microscopy for the morphological analysis, nitrogen adsorption to determine the specific surface area, and laser scattering to evaluate the particle size distribution. The LSM perovskite-type oxides containing intermediate 0.22 mol % Sr were found to exhibit a tendency to decrease in crystallite size and increase in specific surface area and, when calcined at 700-900 ºC exhibited a pure phase of perovskite, had a crystallite size of about 17-20 nm and a specific surface area for 900 ºC of 34.3 m².g-1.
publishDate 2011
dc.date.none.fl_str_mv 2011-03-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392011000100015
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392011000100015
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1516-14392011005000018
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv ABM, ABC, ABPol
publisher.none.fl_str_mv ABM, ABC, ABPol
dc.source.none.fl_str_mv Materials Research v.14 n.1 2011
reponame:Materials research (São Carlos. Online)
instname:Universidade Federal de São Carlos (UFSCAR)
instacron:ABM ABC ABPOL
instname_str Universidade Federal de São Carlos (UFSCAR)
instacron_str ABM ABC ABPOL
institution ABM ABC ABPOL
reponame_str Materials research (São Carlos. Online)
collection Materials research (São Carlos. Online)
repository.name.fl_str_mv Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)
repository.mail.fl_str_mv dedz@power.ufscar.br
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