Thermal and spectroscopic studies of solid oxamate of light trivalent lanthanides

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dc.contributor.authorCaires, F. J. [UNESP]
dc.contributor.authorLima, L. S. [UNESP]
dc.contributor.authorGomes, D. J C [UNESP]
dc.contributor.authorGigante, A. C. [UNESP]
dc.contributor.authorTreu-Filho, O. [UNESP]
dc.contributor.authorIonashiro, Massao [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-27T11:27:27Z
dc.date.available2014-05-27T11:27:27Z
dc.date.issued2013-01-01
dc.description.abstractSolid-state LnL3·1.25H2O compounds, where L is oxamate and Ln is light trivalent lanthanides, have been synthesized. Simultaneous thermogravimetry and differential scanning calorimetry (TG-DSC), experimental and theoretical infrared spectroscopy, TG-DSC coupled to FTIR, elemental analysis, complexometry, and X-ray powder diffractometry were used to characterize and to study the thermal behavior of these compounds. The results led to information about the composition, dehydration, thermal stability, thermal decomposition, and gaseous products evolved during the thermal decomposition of these compounds in dynamic air atmosphere. The dehydration occurs in a single step and through a slow process. The thermal decomposition of the anhydrous compounds occur in a single (Ce), two (Pr), and three (La, Nd to Gd) steps with the formation of the respective oxides, CeO2, Pr 6O11, and Ln2O3 (Ln = La, Nd to Gd). The theoretical and experimental spectroscopic study suggests that the carboxylate group and amide carbonyl group of oxamate are coordinate to the metals in a bidentate chelating mode. © 2012 Akadémiai Kiadó, Budapest, Hungary.en
dc.description.affiliationInstituto de Química UNESP, CP 355, Araraquara, SP 14801-970
dc.description.affiliationUnespInstituto de Química UNESP, CP 355, Araraquara, SP 14801-970
dc.format.extent349-355
dc.identifierhttp://dx.doi.org/10.1007/s10973-012-2220-y
dc.identifier.citationJournal of Thermal Analysis and Calorimetry, v. 111, n. 1, p. 349-355, 2013.
dc.identifier.doi10.1007/s10973-012-2220-y
dc.identifier.issn1388-6150
dc.identifier.lattes8460531302083773
dc.identifier.scopus2-s2.0-84872438426
dc.identifier.urihttp://hdl.handle.net/11449/74140
dc.identifier.wosWOS:000313207400045
dc.language.isoeng
dc.relation.ispartofJournal of Thermal Analysis and Calorimetry
dc.relation.ispartofjcr2.209
dc.relation.ispartofsjr0,587
dc.rights.accessRightsAcesso restrito
dc.sourceScopus
dc.subjectLight trivalent lanthanides
dc.subjectOxamate
dc.subjectTheoretical calculations
dc.subjectThermal behavior
dc.subjectAnhydrous compounds
dc.subjectCarbonyl groups
dc.subjectCarboxylate groups
dc.subjectComplexometry
dc.subjectDynamic air atmosphere
dc.subjectFTIR
dc.subjectGaseous products
dc.subjectSingle-step
dc.subjectSpectroscopic studies
dc.subjectThermal behaviors
dc.subjectTrivalent lanthanides
dc.subjectX-ray powder diffractometry
dc.subjectAmides
dc.subjectCarboxylation
dc.subjectDecomposition
dc.subjectDehydration
dc.subjectDifferential scanning calorimetry
dc.subjectGadolinium
dc.subjectInfrared spectroscopy
dc.subjectNeodymium
dc.subjectThermogravimetric analysis
dc.subjectSpectroscopic analysis
dc.titleThermal and spectroscopic studies of solid oxamate of light trivalent lanthanidesen
dc.typeArtigo
dcterms.licensehttp://www.springer.com/open+access/authors+rights
unesp.author.lattes8460531302083773
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Química, Araraquarapt

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