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
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/127581
Ver los metadatos del registro completo
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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 |
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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 |
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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 |
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openAccess |
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http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) |
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application/pdf 123-132 |
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