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Thermal behavior, spectroscopic study and evolved gas analysis (EGA) during pyrolysis of picolinic acid, sodium picolinate and its light trivalent lanthanide complexes in solid state

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dc.contributor.authorDo Nascimento, A. L.C.S. [UNESP]
dc.contributor.authorTeixeira, J. A. [UNESP]
dc.contributor.authorNunes, W. D.G. [UNESP]
dc.contributor.authorCampos, F. X. [UNESP]
dc.contributor.authorTreu-Filho, O. [UNESP]
dc.contributor.authorCaires, F. J. [UNESP]
dc.contributor.authorIonashiro, M. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2018-12-11T17:09:32Z
dc.date.available2018-12-11T17:09:32Z
dc.date.issued2016-05-01
dc.description.abstractSynthesis, characterization, and thermal behavior of light trivalent lanthanide picolinate (La-Gd, except Pm) as well as the thermal behavior of picolinic acid and its sodium salt were investigated employing elemental analysis, complexometry, differential scanning calorimetry (DSC), simultaneous thermogravimetry and differential scanning calorimetry (TG-DSC), infrared spectroscopy (FTIR), X-ray power diffractometry, and evolved gas analysis (EGA) for TG-DSC coupled to FTIR. All the synthesized compounds were obtained in the anhydrous state and the thermal decomposition in dynamic dry air atmosphere occured in a single step or two consecutive steps with formation of the respective oxides, CeO2, Pr6O11 and Ln2O3 (Ln = La, Nd to Gd). In dynamic dry nitrogen atmosphere the thermal decomposition occured in two or three consecutive steps and mass loss was observed up to 1000 °C. The EGA data allowed the identification of gaseous products evolved during pyrolysis and oxidative decomposition. The results of density functional theory (DFT) and FTIR also provided information on the ligand's denticity.en
dc.description.affiliationInstituto de Química Universidade Estadual Paulista, CP 355
dc.description.affiliationFACULDAde de CIÊNCIAS UNESP - Univ. Estadual Paulista Campus Bauru Departamento de Química
dc.description.affiliationUnespInstituto de Química Universidade Estadual Paulista, CP 355
dc.description.affiliationUnespFACULDAde de CIÊNCIAS UNESP - Univ. Estadual Paulista Campus Bauru Departamento de Química
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipNational Cancer Center
dc.description.sponsorshipIdFAPESP: 2013/09022-7
dc.format.extent242-250
dc.identifierhttp://dx.doi.org/10.1016/j.jaap.2016.01.010
dc.identifier.citationJournal of Analytical and Applied Pyrolysis, v. 119, p. 242-250.
dc.identifier.doi10.1016/j.jaap.2016.01.010
dc.identifier.file2-s2.0-85010914994.pdf
dc.identifier.issn0165-2370
dc.identifier.scopus2-s2.0-85010914994
dc.identifier.urihttp://hdl.handle.net/11449/174142
dc.language.isoeng
dc.relation.ispartofJournal of Analytical and Applied Pyrolysis
dc.relation.ispartofsjr1,129
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectDensity functional theory (DFT)
dc.subjectEvolved gases analysis (EGA)
dc.subjectLight trivalent lanthanides
dc.subjectPicolinate
dc.subjectPyrolysis
dc.titleThermal behavior, spectroscopic study and evolved gas analysis (EGA) during pyrolysis of picolinic acid, sodium picolinate and its light trivalent lanthanide complexes in solid stateen
dc.typeArtigo
dspace.entity.typePublication
unesp.departmentQuímica - FCpt

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Bauru - FC - Faculdade de Ciências