Synthesis, characterization and thermal behavior of some trivalent lanthanide 4-amino-benzenesulfonate salts
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1007/s10973-017-6581-0 http://hdl.handle.net/11449/179080 |
Resumo: | The lanthanide 4-amino-benzenesulfonate salts (or sulfanilates) were obtained by the reaction of lanthanide carbonates (La3+, Ce3+, Pr3+, Nd3+, Sm3+, Eu3+ and Gd3+) and 4-amino-benzenesulfonic (or sulfanilic) acid in aqueous solution. Simultaneous thermogravimetry, differential thermal analysis and differential scanning calorimetry, elemental analysis, X-ray powder diffractometry and infrared spectroscopy (FTIR) were used to characterize and to study the thermal behavior of these compounds. The general formula could be established as LnL3·nH2O, where Ln represents trivalent lanthanide ions (La–Gd), L is the 4-amino-benzenesulfonate anion (NH2C6H4SO3 −) and n = 8 (La–Gd) and n = 7 only for Ce. The thermal behavior indicates that dehydration occurs in a single step up to 443 K, characterized by an endothermic peak, and the enthalpy of dehydration was evaluated by DSC. Thermal decomposition takes place above 523 K producing a stable intermediate Ln2O2SO4 characterized by X- ray diffraction, which in the sequence decomposed to the respective oxides. For the La3+, Nd3+ and Pr3+ sulfanilates, the residual oxide formation occurs only after 1573 K. |
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Synthesis, characterization and thermal behavior of some trivalent lanthanide 4-amino-benzenesulfonate salts4-Amino-benzenesulfonatesLanthanidesSulfanilatesThermal behaviorThe lanthanide 4-amino-benzenesulfonate salts (or sulfanilates) were obtained by the reaction of lanthanide carbonates (La3+, Ce3+, Pr3+, Nd3+, Sm3+, Eu3+ and Gd3+) and 4-amino-benzenesulfonic (or sulfanilic) acid in aqueous solution. Simultaneous thermogravimetry, differential thermal analysis and differential scanning calorimetry, elemental analysis, X-ray powder diffractometry and infrared spectroscopy (FTIR) were used to characterize and to study the thermal behavior of these compounds. The general formula could be established as LnL3·nH2O, where Ln represents trivalent lanthanide ions (La–Gd), L is the 4-amino-benzenesulfonate anion (NH2C6H4SO3 −) and n = 8 (La–Gd) and n = 7 only for Ce. The thermal behavior indicates that dehydration occurs in a single step up to 443 K, characterized by an endothermic peak, and the enthalpy of dehydration was evaluated by DSC. Thermal decomposition takes place above 523 K producing a stable intermediate Ln2O2SO4 characterized by X- ray diffraction, which in the sequence decomposed to the respective oxides. For the La3+, Nd3+ and Pr3+ sulfanilates, the residual oxide formation occurs only after 1573 K.Departamento Engenharia de Materiais e Tecnologia Faculdade de Engenharia Universidade Estadual Paulista (UNESP)Departamento de Física e Química Faculdade de Engenharia Universidade Estadual Paulista (UNESP)Departamento Engenharia de Materiais e Tecnologia Faculdade de Engenharia Universidade Estadual Paulista (UNESP)Departamento de Física e Química Faculdade de Engenharia Universidade Estadual Paulista (UNESP)Universidade Estadual Paulista (Unesp)Matias, Fabrício Rossi Marques [UNESP]da Silva, Vivian Martins F. [UNESP]Nunes, Ronaldo Spezia [UNESP]Luiz, José Marques [UNESP]2018-12-11T17:33:37Z2018-12-11T17:33:37Z2017-12-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article2185-2190application/pdfhttp://dx.doi.org/10.1007/s10973-017-6581-0Journal of Thermal Analysis and Calorimetry, v. 130, n. 3, p. 2185-2190, 2017.1588-29261388-6150http://hdl.handle.net/11449/17908010.1007/s10973-017-6581-02-s2.0-850269033872-s2.0-85026903387.pdf95073063281102010000-0002-5001-5038Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of Thermal Analysis and Calorimetry0,5870,587info:eu-repo/semantics/openAccess2024-07-01T20:52:17Zoai:repositorio.unesp.br:11449/179080Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T18:08:57.357195Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Synthesis, characterization and thermal behavior of some trivalent lanthanide 4-amino-benzenesulfonate salts |
title |
Synthesis, characterization and thermal behavior of some trivalent lanthanide 4-amino-benzenesulfonate salts |
spellingShingle |
Synthesis, characterization and thermal behavior of some trivalent lanthanide 4-amino-benzenesulfonate salts Matias, Fabrício Rossi Marques [UNESP] 4-Amino-benzenesulfonates Lanthanides Sulfanilates Thermal behavior |
title_short |
Synthesis, characterization and thermal behavior of some trivalent lanthanide 4-amino-benzenesulfonate salts |
title_full |
Synthesis, characterization and thermal behavior of some trivalent lanthanide 4-amino-benzenesulfonate salts |
title_fullStr |
Synthesis, characterization and thermal behavior of some trivalent lanthanide 4-amino-benzenesulfonate salts |
title_full_unstemmed |
Synthesis, characterization and thermal behavior of some trivalent lanthanide 4-amino-benzenesulfonate salts |
title_sort |
Synthesis, characterization and thermal behavior of some trivalent lanthanide 4-amino-benzenesulfonate salts |
author |
Matias, Fabrício Rossi Marques [UNESP] |
author_facet |
Matias, Fabrício Rossi Marques [UNESP] da Silva, Vivian Martins F. [UNESP] Nunes, Ronaldo Spezia [UNESP] Luiz, José Marques [UNESP] |
author_role |
author |
author2 |
da Silva, Vivian Martins F. [UNESP] Nunes, Ronaldo Spezia [UNESP] Luiz, José Marques [UNESP] |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Matias, Fabrício Rossi Marques [UNESP] da Silva, Vivian Martins F. [UNESP] Nunes, Ronaldo Spezia [UNESP] Luiz, José Marques [UNESP] |
dc.subject.por.fl_str_mv |
4-Amino-benzenesulfonates Lanthanides Sulfanilates Thermal behavior |
topic |
4-Amino-benzenesulfonates Lanthanides Sulfanilates Thermal behavior |
description |
The lanthanide 4-amino-benzenesulfonate salts (or sulfanilates) were obtained by the reaction of lanthanide carbonates (La3+, Ce3+, Pr3+, Nd3+, Sm3+, Eu3+ and Gd3+) and 4-amino-benzenesulfonic (or sulfanilic) acid in aqueous solution. Simultaneous thermogravimetry, differential thermal analysis and differential scanning calorimetry, elemental analysis, X-ray powder diffractometry and infrared spectroscopy (FTIR) were used to characterize and to study the thermal behavior of these compounds. The general formula could be established as LnL3·nH2O, where Ln represents trivalent lanthanide ions (La–Gd), L is the 4-amino-benzenesulfonate anion (NH2C6H4SO3 −) and n = 8 (La–Gd) and n = 7 only for Ce. The thermal behavior indicates that dehydration occurs in a single step up to 443 K, characterized by an endothermic peak, and the enthalpy of dehydration was evaluated by DSC. Thermal decomposition takes place above 523 K producing a stable intermediate Ln2O2SO4 characterized by X- ray diffraction, which in the sequence decomposed to the respective oxides. For the La3+, Nd3+ and Pr3+ sulfanilates, the residual oxide formation occurs only after 1573 K. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-12-01 2018-12-11T17:33:37Z 2018-12-11T17:33:37Z |
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/s10973-017-6581-0 Journal of Thermal Analysis and Calorimetry, v. 130, n. 3, p. 2185-2190, 2017. 1588-2926 1388-6150 http://hdl.handle.net/11449/179080 10.1007/s10973-017-6581-0 2-s2.0-85026903387 2-s2.0-85026903387.pdf 9507306328110201 0000-0002-5001-5038 |
url |
http://dx.doi.org/10.1007/s10973-017-6581-0 http://hdl.handle.net/11449/179080 |
identifier_str_mv |
Journal of Thermal Analysis and Calorimetry, v. 130, n. 3, p. 2185-2190, 2017. 1588-2926 1388-6150 10.1007/s10973-017-6581-0 2-s2.0-85026903387 2-s2.0-85026903387.pdf 9507306328110201 0000-0002-5001-5038 |
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 |
2185-2190 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 |
|
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1808128901785845760 |