Study of thermoanalytical behavior of heavier lanthanides terephthalates in air atmosphere

Coordination compounds of heavier lanthanides with terephthalate ligand have been synthesized and characterized employing simultaneous thermogravimetry and differential scanning calorimetry (TG-DSC), differential scanning calorimetry (DSC), Fourier transform infrared spectroscopy (FTIR), TG coupled...

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Autores: Costa, B. A., Nunes, W. D.G. [UNESP], Bembo, L. H., Siqueira, A. B., Caires, F. [UNESP], Leles, M. I.G., Ionashiro, E. Y.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2018
País:Brasil
Institución:Universidade Estadual Paulista (UNESP)
Repositorio:Repositório Institucional da UNESP
Idioma:inglés
OAI Identifier:oai:repositorio.unesp.br:11449/171082
Acceso en línea:http://dx.doi.org/10.1007/s10973-018-7373-x
http://hdl.handle.net/11449/171082
Access Level:acceso abierto
Palabra clave:Heavier lanthanides
Lanthanides coordination compounds
Terephthalate
Thermal behavior
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spelling Study of thermoanalytical behavior of heavier lanthanides terephthalates in air atmosphereHeavier lanthanidesLanthanides coordination compoundsTerephthalateThermal behaviorCoordination compounds of heavier lanthanides with terephthalate ligand have been synthesized and characterized employing simultaneous thermogravimetry and differential scanning calorimetry (TG-DSC), differential scanning calorimetry (DSC), Fourier transform infrared spectroscopy (FTIR), TG coupled to FTIR, elemental analysis and complexometry. The results from complexometry with EDTA and from TG curves allowed to establish the stoichiometry of these compounds, which are in agreement with the Ln2(TFTa)3·nH2O general formula where Ln represents trivalent lanthanides or yttrium, TFTA is terephthalate and n = 4 (Er, and Y); 4.5 (Tb, Dy, Ho and Tm); 5 (Yb) and 6.5 (Lu). The thermal decomposition of the anhydrous compounds occurs in two or three consecutive and/or overlapping steps, with the formation of the respective oxides: Tb4O7 and Ln2O3 (Ln = Dy to Lu and Y). The TG-FTIR of the evolved gases obtained from the thermal decomposition of the synthesized compounds, identified the formation of CO2 and water as main gaseous products. The FTIR results also led to information about the type of coordination of the isolated compounds which suggest that the lanthanides are linked to the carboxylate groups by a bridging bond.Instituto de Química UFG Campus IIUniversidade Federal de Mato Grosso UFMT – Campus CuiabáInstituto de Química UNESP Campus de Araraquara – UNESPFaculdade de Ciências UNESP – Campus BauruInstituto de Química UNESP Campus de Araraquara – UNESPFaculdade de Ciências UNESP – Campus BauruUFGUFMT – Campus CuiabáUniversidade Estadual Paulista (Unesp)2018-12-11T16:53:49Z2018-12-11T16:53:49Z2018-06-04info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1-6application/pdfhttp://dx.doi.org/10.1007/s10973-018-7373-xJournal of Thermal Analysis and Calorimetry, p. 1-6.1588-29261388-6150http://hdl.handle.net/11449/17108210.1007/s10973-018-7373-x2-s2.0-850480054872-s2.0-85048005487.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of Thermal Analysis and Calorimetry0,5870,587info:eu-repo/semantics/openAccessCosta, B. A.Nunes, W. D.G. [UNESP]Bembo, L. H.Siqueira, A. B.Caires, F. [UNESP]Leles, M. I.G.Ionashiro, E. Y.2025-06-24T05:27:32Zoai:repositorio.unesp.br:11449/171082Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestrepositoriounesp@unesp.bropendoar:29462025-06-24T05:27:32Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Study of thermoanalytical behavior of heavier lanthanides terephthalates in air atmosphere
title Study of thermoanalytical behavior of heavier lanthanides terephthalates in air atmosphere
spellingShingle Study of thermoanalytical behavior of heavier lanthanides terephthalates in air atmosphere
Costa, B. A.
Heavier lanthanides
Lanthanides coordination compounds
Terephthalate
Thermal behavior
title_short Study of thermoanalytical behavior of heavier lanthanides terephthalates in air atmosphere
title_full Study of thermoanalytical behavior of heavier lanthanides terephthalates in air atmosphere
title_fullStr Study of thermoanalytical behavior of heavier lanthanides terephthalates in air atmosphere
title_full_unstemmed Study of thermoanalytical behavior of heavier lanthanides terephthalates in air atmosphere
title_sort Study of thermoanalytical behavior of heavier lanthanides terephthalates in air atmosphere
dc.creator.none.fl_str_mv Costa, B. A.
Nunes, W. D.G. [UNESP]
Bembo, L. H.
Siqueira, A. B.
Caires, F. [UNESP]
Leles, M. I.G.
Ionashiro, E. Y.
author Costa, B. A.
author_facet Costa, B. A.
Nunes, W. D.G. [UNESP]
Bembo, L. H.
Siqueira, A. B.
Caires, F. [UNESP]
Leles, M. I.G.
Ionashiro, E. Y.
author_role author
author2 Nunes, W. D.G. [UNESP]
Bembo, L. H.
Siqueira, A. B.
Caires, F. [UNESP]
Leles, M. I.G.
Ionashiro, E. Y.
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv UFG
UFMT – Campus Cuiabá
Universidade Estadual Paulista (Unesp)
dc.subject.por.fl_str_mv Heavier lanthanides
Lanthanides coordination compounds
Terephthalate
Thermal behavior
topic Heavier lanthanides
Lanthanides coordination compounds
Terephthalate
Thermal behavior
description Coordination compounds of heavier lanthanides with terephthalate ligand have been synthesized and characterized employing simultaneous thermogravimetry and differential scanning calorimetry (TG-DSC), differential scanning calorimetry (DSC), Fourier transform infrared spectroscopy (FTIR), TG coupled to FTIR, elemental analysis and complexometry. The results from complexometry with EDTA and from TG curves allowed to establish the stoichiometry of these compounds, which are in agreement with the Ln2(TFTa)3·nH2O general formula where Ln represents trivalent lanthanides or yttrium, TFTA is terephthalate and n = 4 (Er, and Y); 4.5 (Tb, Dy, Ho and Tm); 5 (Yb) and 6.5 (Lu). The thermal decomposition of the anhydrous compounds occurs in two or three consecutive and/or overlapping steps, with the formation of the respective oxides: Tb4O7 and Ln2O3 (Ln = Dy to Lu and Y). The TG-FTIR of the evolved gases obtained from the thermal decomposition of the synthesized compounds, identified the formation of CO2 and water as main gaseous products. The FTIR results also led to information about the type of coordination of the isolated compounds which suggest that the lanthanides are linked to the carboxylate groups by a bridging bond.
publishDate 2018
dc.date.none.fl_str_mv 2018-12-11T16:53:49Z
2018-12-11T16:53:49Z
2018-06-04
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.1007/s10973-018-7373-x
Journal of Thermal Analysis and Calorimetry, p. 1-6.
1588-2926
1388-6150
http://hdl.handle.net/11449/171082
10.1007/s10973-018-7373-x
2-s2.0-85048005487
2-s2.0-85048005487.pdf
url http://dx.doi.org/10.1007/s10973-018-7373-x
http://hdl.handle.net/11449/171082
identifier_str_mv Journal of Thermal Analysis and Calorimetry, p. 1-6.
1588-2926
1388-6150
10.1007/s10973-018-7373-x
2-s2.0-85048005487
2-s2.0-85048005487.pdf
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Journal of Thermal Analysis and Calorimetry
0,587
0,587
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 1-6
application/pdf
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv repositoriounesp@unesp.br
_version_ 1853671815989166080
score 15,301603

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