Synthesis of MgAl2 O4 by gelatin method: effect of temperature and time of calcination in crystalline structure
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRN |
Texto Completo: | https://repositorio.ufrn.br/handle/123456789/45330 |
Resumo: | Magnesium aluminate can be obtained by the methods: ceramic method, sol-gel, co-precipitation, hydrothermal and combustion. However, this work presents a simple and low cost route to obtain MgAl2O4 through the gelatin method. The main objective was to use gelatin as an organic precursor and to verify the influence of temperature and time of calcination on the structural and morphological properties of obtained materials. Al and Mg nitrates were used as metal precursors with Al/Mg = 2 ratio. Samples were calcined as follows: 700 oC, 900 oC and 1100 oC during 2 and 4 h. The powders were characterized by TGA, XRD and SEM. A single phase material with a crystallinity of 39.18 - 90.40% and crystallite size in the range of 12.4 to 55.5 nm was obtained. The materials exhibited morphology in the form of plates and small agglomerates. It was found that increasing temperature and time of calcination favored the growth of crystallites and increased crystallinity |
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Melo, Marcus Antônio de FreitasFigueredo, Gilvan Pereira deCarvalho, Alexandre Fontes Melo deMedeiros, Rodolfo Luiz Bezerra de AraújoSilva, Francisco MarceloMacedo, Heloísa Pimenta deMelo, Dulce Maria de Araújo2021-12-13T12:59:44Z2021-12-13T12:59:44Z2017FIGUEREDO, G. P. de; CARVALHO, A. F. M. de; MEDEIROS, R. L. B. de A.; SILVA, F. M.; MACÊDO, H. P. de; MELO, M. A. F.; MELO, D. M. A.. Synthesis of MgAl2O4 by Gelatin Method: Effect of Temperature and Time of Calcination in Crystalline Structure. Materials Research-Ibero-american Journal of Materials, p. 000, 2017. Disponível em: https://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392017000800254. Acesso em: 19 out. 2021. https://doi.org/10.1590/1980-5373-MR-2017-01051980-5373https://repositorio.ufrn.br/handle/123456789/4533010.1590/1980-5373-MR-2017-0105ScieloAttribution 3.0 Brazilhttp://creativecommons.org/licenses/by/3.0/br/info:eu-repo/semantics/openAccessMagnesium aluminateGelatin methodThermal treatmentCatalytic supportSynthesis of MgAl2 O4 by gelatin method: effect of temperature and time of calcination in crystalline structureinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleMagnesium aluminate can be obtained by the methods: ceramic method, sol-gel, co-precipitation, hydrothermal and combustion. However, this work presents a simple and low cost route to obtain MgAl2O4 through the gelatin method. The main objective was to use gelatin as an organic precursor and to verify the influence of temperature and time of calcination on the structural and morphological properties of obtained materials. Al and Mg nitrates were used as metal precursors with Al/Mg = 2 ratio. Samples were calcined as follows: 700 oC, 900 oC and 1100 oC during 2 and 4 h. The powders were characterized by TGA, XRD and SEM. A single phase material with a crystallinity of 39.18 - 90.40% and crystallite size in the range of 12.4 to 55.5 nm was obtained. The materials exhibited morphology in the form of plates and small agglomerates. It was found that increasing temperature and time of calcination favored the growth of crystallites and increased crystallinityengreponame:Repositório Institucional da UFRNinstname:Universidade Federal do Rio Grande do Norte (UFRN)instacron:UFRNORIGINALSynthesisOfMgAl2O4ByGelatinMethod_Melo_2017.pdfSynthesisOfMgAl2O4ByGelatinMethod_Melo_2017.pdfapplication/pdf2349429https://repositorio.ufrn.br/bitstream/123456789/45330/1/SynthesisOfMgAl2O4ByGelatinMethod_Melo_2017.pdf5011f5a03a0ba8c46f588ac439a164e2MD51CC-LICENSElicense_rdflicense_rdfapplication/rdf+xml; charset=utf-8914https://repositorio.ufrn.br/bitstream/123456789/45330/2/license_rdf4d2950bda3d176f570a9f8b328dfbbefMD52LICENSElicense.txtlicense.txttext/plain; charset=utf-81484https://repositorio.ufrn.br/bitstream/123456789/45330/3/license.txte9597aa2854d128fd968be5edc8a28d9MD53123456789/453302021-12-13 09:59:45.061oai:https://repositorio.ufrn.br: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Repositório de PublicaçõesPUBhttp://repositorio.ufrn.br/oai/opendoar:2021-12-13T12:59:45Repositório Institucional da UFRN - Universidade Federal do Rio Grande do Norte (UFRN)false |
dc.title.pt_BR.fl_str_mv |
Synthesis of MgAl2 O4 by gelatin method: effect of temperature and time of calcination in crystalline structure |
title |
Synthesis of MgAl2 O4 by gelatin method: effect of temperature and time of calcination in crystalline structure |
spellingShingle |
Synthesis of MgAl2 O4 by gelatin method: effect of temperature and time of calcination in crystalline structure Melo, Marcus Antônio de Freitas Magnesium aluminate Gelatin method Thermal treatment Catalytic support |
title_short |
Synthesis of MgAl2 O4 by gelatin method: effect of temperature and time of calcination in crystalline structure |
title_full |
Synthesis of MgAl2 O4 by gelatin method: effect of temperature and time of calcination in crystalline structure |
title_fullStr |
Synthesis of MgAl2 O4 by gelatin method: effect of temperature and time of calcination in crystalline structure |
title_full_unstemmed |
Synthesis of MgAl2 O4 by gelatin method: effect of temperature and time of calcination in crystalline structure |
title_sort |
Synthesis of MgAl2 O4 by gelatin method: effect of temperature and time of calcination in crystalline structure |
author |
Melo, Marcus Antônio de Freitas |
author_facet |
Melo, Marcus Antônio de Freitas Figueredo, Gilvan Pereira de Carvalho, Alexandre Fontes Melo de Medeiros, Rodolfo Luiz Bezerra de Araújo Silva, Francisco Marcelo Macedo, Heloísa Pimenta de Melo, Dulce Maria de Araújo |
author_role |
author |
author2 |
Figueredo, Gilvan Pereira de Carvalho, Alexandre Fontes Melo de Medeiros, Rodolfo Luiz Bezerra de Araújo Silva, Francisco Marcelo Macedo, Heloísa Pimenta de Melo, Dulce Maria de Araújo |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
Melo, Marcus Antônio de Freitas Figueredo, Gilvan Pereira de Carvalho, Alexandre Fontes Melo de Medeiros, Rodolfo Luiz Bezerra de Araújo Silva, Francisco Marcelo Macedo, Heloísa Pimenta de Melo, Dulce Maria de Araújo |
dc.subject.por.fl_str_mv |
Magnesium aluminate Gelatin method Thermal treatment Catalytic support |
topic |
Magnesium aluminate Gelatin method Thermal treatment Catalytic support |
description |
Magnesium aluminate can be obtained by the methods: ceramic method, sol-gel, co-precipitation, hydrothermal and combustion. However, this work presents a simple and low cost route to obtain MgAl2O4 through the gelatin method. The main objective was to use gelatin as an organic precursor and to verify the influence of temperature and time of calcination on the structural and morphological properties of obtained materials. Al and Mg nitrates were used as metal precursors with Al/Mg = 2 ratio. Samples were calcined as follows: 700 oC, 900 oC and 1100 oC during 2 and 4 h. The powders were characterized by TGA, XRD and SEM. A single phase material with a crystallinity of 39.18 - 90.40% and crystallite size in the range of 12.4 to 55.5 nm was obtained. The materials exhibited morphology in the form of plates and small agglomerates. It was found that increasing temperature and time of calcination favored the growth of crystallites and increased crystallinity |
publishDate |
2017 |
dc.date.issued.fl_str_mv |
2017 |
dc.date.accessioned.fl_str_mv |
2021-12-13T12:59:44Z |
dc.date.available.fl_str_mv |
2021-12-13T12:59:44Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
FIGUEREDO, G. P. de; CARVALHO, A. F. M. de; MEDEIROS, R. L. B. de A.; SILVA, F. M.; MACÊDO, H. P. de; MELO, M. A. F.; MELO, D. M. A.. Synthesis of MgAl2O4 by Gelatin Method: Effect of Temperature and Time of Calcination in Crystalline Structure. Materials Research-Ibero-american Journal of Materials, p. 000, 2017. Disponível em: https://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392017000800254. Acesso em: 19 out. 2021. https://doi.org/10.1590/1980-5373-MR-2017-0105 |
dc.identifier.uri.fl_str_mv |
https://repositorio.ufrn.br/handle/123456789/45330 |
dc.identifier.issn.none.fl_str_mv |
1980-5373 |
dc.identifier.doi.none.fl_str_mv |
10.1590/1980-5373-MR-2017-0105 |
identifier_str_mv |
FIGUEREDO, G. P. de; CARVALHO, A. F. M. de; MEDEIROS, R. L. B. de A.; SILVA, F. M.; MACÊDO, H. P. de; MELO, M. A. F.; MELO, D. M. A.. Synthesis of MgAl2O4 by Gelatin Method: Effect of Temperature and Time of Calcination in Crystalline Structure. Materials Research-Ibero-american Journal of Materials, p. 000, 2017. Disponível em: https://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392017000800254. Acesso em: 19 out. 2021. https://doi.org/10.1590/1980-5373-MR-2017-0105 1980-5373 10.1590/1980-5373-MR-2017-0105 |
url |
https://repositorio.ufrn.br/handle/123456789/45330 |
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eng |
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eng |
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Attribution 3.0 Brazil http://creativecommons.org/licenses/by/3.0/br/ info:eu-repo/semantics/openAccess |
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Attribution 3.0 Brazil http://creativecommons.org/licenses/by/3.0/br/ |
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openAccess |
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Scielo |
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Scielo |
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