Synthesis of MgAl2 O4 by gelatin method: effect of temperature and time of calcination in crystalline structure

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dc.contributor.authorMelo, Marcus Antônio de Freitas
dc.contributor.authorFigueredo, Gilvan Pereira de
dc.contributor.authorCarvalho, Alexandre Fontes Melo de
dc.contributor.authorMedeiros, Rodolfo Luiz Bezerra de Araújo
dc.contributor.authorSilva, Francisco Marcelo
dc.contributor.authorMacedo, Heloísa Pimenta de
dc.contributor.authorMelo, Dulce Maria de Araújo
dc.date.accessioned2021-12-13T12:59:44Z
dc.date.available2021-12-13T12:59:44Z
dc.date.issued2017
dc.description.resumoMagnesium 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 crystallinitypt_BR
dc.identifier.citationFIGUEREDO, 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-2017-0105pt_BR
dc.identifier.doi10.1590/1980-5373-MR-2017-0105
dc.identifier.issn1980-5373
dc.identifier.urihttps://repositorio.ufrn.br/handle/123456789/45330
dc.languageenpt_BR
dc.publisherScielopt_BR
dc.rightsAttribution 3.0 Brazil*
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/br/*
dc.subjectMagnesium aluminatept_BR
dc.subjectGelatin methodpt_BR
dc.subjectThermal treatmentpt_BR
dc.subjectCatalytic supportpt_BR
dc.titleSynthesis of MgAl2 O4 by gelatin method: effect of temperature and time of calcination in crystalline structurept_BR
dc.typearticlept_BR

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