Transition metal-modified polyoxometalates supported on carbon as catalyst in 2-(methylthio)-benzothiazole sulfoxidation

Autores
Frenzel, Romina Alejandra; Romanelli, Gustavo Pablo; Blanco, Mirta Noemí; Pizzio, Luis René
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Polyoxometalates with lacunary Keggin structure modified with transition metal ions [PW₁₁O₃₉ M(H₂O)]⁵⁻, where M= Ni²⁺, Co²⁺,, Cu²⁺, or Zn²⁺,, were synthesized and supported on activated carbon to obtain the PW11MC catalysts. Using FT-IR and DTA-TGA it was concluded that the [PW11O₃₉M(H₂O)]⁵⁻ species are interacting with the functional groups of the support, and that thermal treatment leads to the loss of the coordinatively bonded water molecules without any noticeable anion degradation. The activity and selectivity of the catalysts in the sulfoxidation reaction of 2-(methylthio)-benzothiazole, an emerging environmental pollutant, were evaluated. The reaction was carried out in acetonitrile as solvent using H₂O₂ 35% p/v as a clean oxidant. The conversion values decreased in the following order: PW11NiC > PW11CuC > PW11CoC > PW11ZnC, with selectivity to sulfoxide higher than 69%. The catalyst could be reused without appreciable loss of the catalytic activity at least three times. The materials were found to be efficient and recyclable catalysts for 2-(methylthio)-benzothiazole sulfoxidation in order to obtain a more biodegradable product than the corresponding substrate.
Centro de Investigación y Desarrollo en Ciencias Aplicadas
Materia
Química
Supported metal-substituted polyoxometalates
Carbon
2-(methylthio)- benzothiazole oxidation
Sulfoxidation
Hydrogen peroxide
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/127581

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network_name_str SEDICI (UNLP)
spelling Transition metal-modified polyoxometalates supported on carbon as catalyst in 2-(methylthio)-benzothiazole sulfoxidationFrenzel, Romina AlejandraRomanelli, Gustavo PabloBlanco, Mirta NoemíPizzio, Luis RenéQuímicaSupported metal-substituted polyoxometalatesCarbon2-(methylthio)- benzothiazole oxidationSulfoxidationHydrogen peroxidePolyoxometalates with lacunary Keggin structure modified with transition metal ions [PW₁₁O₃₉ M(H₂O)]⁵⁻, where M= Ni²⁺, Co²⁺,, Cu²⁺, or Zn²⁺,, were synthesized and supported on activated carbon to obtain the PW11MC catalysts. Using FT-IR and DTA-TGA it was concluded that the [PW11O₃₉M(H₂O)]⁵⁻ species are interacting with the functional groups of the support, and that thermal treatment leads to the loss of the coordinatively bonded water molecules without any noticeable anion degradation. The activity and selectivity of the catalysts in the sulfoxidation reaction of 2-(methylthio)-benzothiazole, an emerging environmental pollutant, were evaluated. The reaction was carried out in acetonitrile as solvent using H₂O₂ 35% p/v as a clean oxidant. The conversion values decreased in the following order: PW11NiC > PW11CuC > PW11CoC > PW11ZnC, with selectivity to sulfoxide higher than 69%. The catalyst could be reused without appreciable loss of the catalytic activity at least three times. The materials were found to be efficient and recyclable catalysts for 2-(methylthio)-benzothiazole sulfoxidation in order to obtain a more biodegradable product than the corresponding substrate.Centro de Investigación y Desarrollo en Ciencias Aplicadas2015info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf123-132http://sedici.unlp.edu.ar/handle/10915/127581enginfo:eu-repo/semantics/altIdentifier/issn/0974-3626info:eu-repo/semantics/altIdentifier/issn/0973-7103info:eu-repo/semantics/altIdentifier/doi/10.1007/s12039-014-0757-yinfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:30:52Zoai:sedici.unlp.edu.ar:10915/127581Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:30:52.949SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Transition metal-modified polyoxometalates supported on carbon as catalyst in 2-(methylthio)-benzothiazole sulfoxidation
title Transition metal-modified polyoxometalates supported on carbon as catalyst in 2-(methylthio)-benzothiazole sulfoxidation
spellingShingle Transition metal-modified polyoxometalates supported on carbon as catalyst in 2-(methylthio)-benzothiazole sulfoxidation
Frenzel, Romina Alejandra
Química
Supported metal-substituted polyoxometalates
Carbon
2-(methylthio)- benzothiazole oxidation
Sulfoxidation
Hydrogen peroxide
title_short Transition metal-modified polyoxometalates supported on carbon as catalyst in 2-(methylthio)-benzothiazole sulfoxidation
title_full Transition metal-modified polyoxometalates supported on carbon as catalyst in 2-(methylthio)-benzothiazole sulfoxidation
title_fullStr Transition metal-modified polyoxometalates supported on carbon as catalyst in 2-(methylthio)-benzothiazole sulfoxidation
title_full_unstemmed Transition metal-modified polyoxometalates supported on carbon as catalyst in 2-(methylthio)-benzothiazole sulfoxidation
title_sort Transition metal-modified polyoxometalates supported on carbon as catalyst in 2-(methylthio)-benzothiazole sulfoxidation
dc.creator.none.fl_str_mv Frenzel, Romina Alejandra
Romanelli, Gustavo Pablo
Blanco, Mirta Noemí
Pizzio, Luis René
author Frenzel, Romina Alejandra
author_facet Frenzel, Romina Alejandra
Romanelli, Gustavo Pablo
Blanco, Mirta Noemí
Pizzio, Luis René
author_role author
author2 Romanelli, Gustavo Pablo
Blanco, Mirta Noemí
Pizzio, Luis René
author2_role author
author
author
dc.subject.none.fl_str_mv Química
Supported metal-substituted polyoxometalates
Carbon
2-(methylthio)- benzothiazole oxidation
Sulfoxidation
Hydrogen peroxide
topic Química
Supported metal-substituted polyoxometalates
Carbon
2-(methylthio)- benzothiazole oxidation
Sulfoxidation
Hydrogen peroxide
dc.description.none.fl_txt_mv Polyoxometalates with lacunary Keggin structure modified with transition metal ions [PW₁₁O₃₉ M(H₂O)]⁵⁻, where M= Ni²⁺, Co²⁺,, Cu²⁺, or Zn²⁺,, were synthesized and supported on activated carbon to obtain the PW11MC catalysts. Using FT-IR and DTA-TGA it was concluded that the [PW11O₃₉M(H₂O)]⁵⁻ species are interacting with the functional groups of the support, and that thermal treatment leads to the loss of the coordinatively bonded water molecules without any noticeable anion degradation. The activity and selectivity of the catalysts in the sulfoxidation reaction of 2-(methylthio)-benzothiazole, an emerging environmental pollutant, were evaluated. The reaction was carried out in acetonitrile as solvent using H₂O₂ 35% p/v as a clean oxidant. The conversion values decreased in the following order: PW11NiC > PW11CuC > PW11CoC > PW11ZnC, with selectivity to sulfoxide higher than 69%. The catalyst could be reused without appreciable loss of the catalytic activity at least three times. The materials were found to be efficient and recyclable catalysts for 2-(methylthio)-benzothiazole sulfoxidation in order to obtain a more biodegradable product than the corresponding substrate.
Centro de Investigación y Desarrollo en Ciencias Aplicadas
description Polyoxometalates with lacunary Keggin structure modified with transition metal ions [PW₁₁O₃₉ M(H₂O)]⁵⁻, where M= Ni²⁺, Co²⁺,, Cu²⁺, or Zn²⁺,, were synthesized and supported on activated carbon to obtain the PW11MC catalysts. Using FT-IR and DTA-TGA it was concluded that the [PW11O₃₉M(H₂O)]⁵⁻ species are interacting with the functional groups of the support, and that thermal treatment leads to the loss of the coordinatively bonded water molecules without any noticeable anion degradation. The activity and selectivity of the catalysts in the sulfoxidation reaction of 2-(methylthio)-benzothiazole, an emerging environmental pollutant, were evaluated. The reaction was carried out in acetonitrile as solvent using H₂O₂ 35% p/v as a clean oxidant. The conversion values decreased in the following order: PW11NiC > PW11CuC > PW11CoC > PW11ZnC, with selectivity to sulfoxide higher than 69%. The catalyst could be reused without appreciable loss of the catalytic activity at least three times. The materials were found to be efficient and recyclable catalysts for 2-(methylthio)-benzothiazole sulfoxidation in order to obtain a more biodegradable product than the corresponding substrate.
publishDate 2015
dc.date.none.fl_str_mv 2015
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/127581
url http://sedici.unlp.edu.ar/handle/10915/127581
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0974-3626
info:eu-repo/semantics/altIdentifier/issn/0973-7103
info:eu-repo/semantics/altIdentifier/doi/10.1007/s12039-014-0757-y
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
123-132
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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