Synthesis of lanthanum beta-alumina powders by the polymeric precursor technique

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dc.contributor.authorCOSTA, G.C.C.pt_BR
dc.contributor.authorMUCCILLO, R.pt_BR
dc.coverageInternacionalpt_BR
dc.date.accessioned2014-07-15T13:42:20Zpt_BR
dc.date.accessioned2014-07-30T11:48:15Z
dc.date.available2014-07-15T13:42:20Zpt_BR
dc.date.available2014-07-30T11:48:15Z
dc.date.issued2008pt_BR
dc.description.abstractLa-β-Al2O3 (LaAl11O18) powders were synthesized by the polymeric precursor technique using lanthanum nitrate and aluminum nitrate. The transformations during thermal treatment of the precursor solution with ethylene glycol and citric acid were evaluated by thermal analysis. Fourier transform infrared spectroscopy analysis was performed after calcinations of the polymeric resin for determination of residual carbon. The specific surface area was evaluated by the BET method. Fine powders with ∼121 m2/g specific surface area and 20 nm average particle size were obtained and observed by scanning and transmission electron microscopy. Nearly single phase LaAl11O18 was obtained after pressing and sintering these powders at 1600 °C with small additions of MgO. The sintered pellets were characterized by X-ray diffraction and scanning electron microscopy. Impedance spectroscopy measurements carried out in the 1000–1200 °C range show the electrolytic behavior of the La-β-Al2O3 pellets, suggesting their application as solid electrolytes in high temperature potentiometric oxygen sensors.
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)pt_BR
dc.description.sponsorshipIDFAPESP:99/10798-0;05/53241-9pt_BR
dc.format.extent1703-1707pt_BR
dc.identifier.citationCOSTA, G.C.C.; MUCCILLO, R. Synthesis of lanthanum beta-alumina powders by the polymeric precursor technique. <b>Ceramics International</b>, v. 34, n. 7, p. 1703-1707, 2008. DOI: <a href="https://dx.doi.org/10.1016/j.ceramint.2007.05.009">10.1016/j.ceramint.2007.05.009</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/4927.
dc.identifier.doi10.1016/j.ceramint.2007.05.009
dc.identifier.fasciculo7pt_BR
dc.identifier.issn0272-8842pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-8598-279X
dc.identifier.urihttp://repositorio.ipen.br/handle/123456789/4927pt_BR
dc.identifier.vol34pt_BR
dc.relation.ispartofCeramics Internationalpt_BR
dc.rightsopenAccessen
dc.subjectpowderspt_BR
dc.subjectlanthanum oxidespt_BR
dc.subjectaluminium oxidespt_BR
dc.subjectsynthesispt_BR
dc.subjectelectric conductivitypt_BR
dc.subjectprecursorpt_BR
dc.subjectpolymerspt_BR
dc.titleSynthesis of lanthanum beta-alumina powders by the polymeric precursor techniquept_BR
dc.typeArtigo de periódicopt_BR
dspace.entity.typePublication
ipen.autorREGINALDO MUCCILLO
ipen.autorGUSTAVO CARNEIRO CARDOSO DA COSTA
ipen.codigoautor1165
ipen.codigoautor3382
ipen.contributor.ipenauthorREGINALDO MUCCILLO
ipen.contributor.ipenauthorGUSTAVO CARNEIRO CARDOSO DA COSTA
ipen.date.recebimento10-01pt_BR
ipen.identifier.fi1.369pt_BR
ipen.identifier.ipendoc14481pt_BR
ipen.identifier.iwosWoSpt_BR
ipen.range.fi0.001 - 1.499
ipen.type.genreArtigo
relation.isAuthorOfPublication97e4b17d-7782-42dc-a38c-60d9b37440a4
relation.isAuthorOfPublication6bf71e8d-2fa5-4597-b3a6-b87efa1f0e21
relation.isAuthorOfPublication.latestForDiscovery6bf71e8d-2fa5-4597-b3a6-b87efa1f0e21
sigepi.autor.atividadeCOSTA, G.C.C.:3382:720:Spt_BR
sigepi.autor.atividadeMUCCILLO, R.:1165:720:Npt_BR
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