Synthesis and characterization of La1-xSr xMnO3±δ powders obtained by the polymeric precursor route
Autor(a) principal: | |
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Data de Publicação: | 2011 |
Outros Autores: | , , , , |
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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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 |
_version_ |
1754212660131397632 |