Synthesis and characterization of La1-xSr xMnO3±δ powders obtained by the polymeric precursor route
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...
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| Format: | Article |
| Language: | English |
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Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)
2011-03-01
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| Series: | Materials Research |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392011000100015 |
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| author | Adriano Alves Rabelo Marfran Cardoso de Macedo Dulce Maria de Araújo Melo Carlos Alberto Paskocimas Antonio Eduardo Martinelli Rubens Maribondo do Nascimento |
| author_facet | Adriano Alves Rabelo Marfran Cardoso de Macedo Dulce Maria de Araújo Melo Carlos Alberto Paskocimas Antonio Eduardo Martinelli Rubens Maribondo do Nascimento |
| author_sort | Adriano Alves Rabelo |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-12-13T16:50:53Z |
| format | Article |
| id | doaj.art-635422d00eff4c36b63c81776bdf5ce2 |
| institution | Directory Open Access Journal |
| issn | 1516-1439 |
| language | English |
| last_indexed | 2024-12-13T16:50:53Z |
| publishDate | 2011-03-01 |
| publisher | Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol) |
| record_format | Article |
| series | Materials Research |
| spelling | doaj.art-635422d00eff4c36b63c81776bdf5ce22022-12-21T23:38:02ZengAssociação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)Materials Research1516-14392011-03-011419196Synthesis and characterization of La1-xSr xMnO3±δ powders obtained by the polymeric precursor routeAdriano Alves RabeloMarfran Cardoso de MacedoDulce Maria de Araújo MeloCarlos Alberto PaskocimasAntonio Eduardo MartinelliRubens Maribondo do NascimentoPolycrystalline 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.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392011000100015perovskitepolymeric precursorSOFC |
| spellingShingle | Adriano Alves Rabelo Marfran Cardoso de Macedo Dulce Maria de Araújo Melo Carlos Alberto Paskocimas Antonio Eduardo Martinelli Rubens Maribondo do Nascimento Synthesis and characterization of La1-xSr xMnO3±δ powders obtained by the polymeric precursor route Materials Research perovskite polymeric precursor SOFC |
| title | 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_short | Synthesis and characterization of La1-xSr xMnO3±δ powders obtained by the polymeric precursor route |
| title_sort | synthesis and characterization of la1 xsr xmno3 948 powders obtained by the polymeric precursor route |
| topic | perovskite polymeric precursor SOFC |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392011000100015 |
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