Show simple item record

dc.contributor.authorCaires, F. J. [UNESP]
dc.contributor.authorGomes, D. J. C. [UNESP]
dc.contributor.authorGigante, A. C. [UNESP]
dc.contributor.authorIonashiro, Massao [UNESP]
dc.date.accessioned2014-12-03T13:08:39Z
dc.date.available2014-12-03T13:08:39Z
dc.date.issued2014-05-01
dc.identifierhttp://dx.doi.org/10.1016/j.jaap.2014.04.001
dc.identifier.citationJournal Of Analytical And Applied Pyrolysis. Amsterdam: Elsevier Science Bv, v. 107, p. 313-322, 2014.
dc.identifier.issn0165-2370
dc.identifier.urihttp://hdl.handle.net/11449/111441
dc.description.abstractSolid-state Ln(C4H7O3)(3)center dot nH(2)O compounds, where Ln stands for trivalent lanthanides or yttrium and C4H7O3- is alpha-hydroxyisobutyrate, have been synthesized. Simultaneous thermogravimetry and differential thermal analysis (TG-DTA), elemental analysis, complexometry and TG-DSC coupled to infrared spectroscopy (FTIR) were used to characterize and to study the thermal behavior of these compounds in CO2 and N-2 atmospheres. The dehydration of the compounds occurs in a single (La to Nd, Tb to Tm and Y), two (Sm and Gd) and three (Eu) steps in N-2 atmosphere and a single (La, Ce, Tb to Tm and Y), two (Pr, Nd and Gd) and three (Sm and Eu) steps in CO2 atmosphere. The final residues of the thermal decomposition in N-2 atmosphere for europium to dysprosium, ytterbium and yttrium compounds up to 1000 degrees C were the respective oxides Ln(2)O(3) (Ln = Eu, Gd, Tb, Dy, Yb,Y) while for lanthanum, cerium praseodymium, neodymium, samarium, holmium, erbium, thulium and lutetium compounds, the mass loss is still being observed up to 1000 degrees C. In CO2 atmosphere, the final residue up to 1000 degrees C for all the compounds was the respective oxides, CeO2, Tb4O7 and Ln(2)O(3) (Ln = La, Pr to Gd, Dy to Lu and Y). (C) 2014 Elsevier B.V. All rights reserved.en
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.format.extent313-322
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofJournal of Analytical and Applied Pyrolysis
dc.sourceWeb of Science
dc.subjectTrivalent lanthanidesen
dc.subjectalpha-Hydroxyisobutyrateen
dc.subjectThermal behavioren
dc.subjectCoupled thermogravimetry-infrareden
dc.subjectspectroscopyen
dc.titleThermal investigation and infrared evolved gas analysis of solid trivalent lanthanide and yttrium alpha-hydroxyisobutyrates in N-2 and CO2 atmospheresen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.description.affiliationUniv Estadual Paulista, Inst Quim, BR-14801970 Araraquara, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Inst Quim, BR-14801970 Araraquara, SP, Brazil
dc.identifier.doi10.1016/j.jaap.2014.04.001
dc.identifier.wosWOS:000336868000040
dc.rights.accessRightsAcesso restrito
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Química, Araraquarapt
dc.identifier.lattes8460531302083773
unesp.author.lattes8460531302083773
dc.relation.ispartofjcr3.468
dc.relation.ispartofsjr1,129
Localize o texto completo

Files in this item

FilesSizeFormatView

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record