Potentiality of heteropolytungstates as catalysts in the selective oxidation of diphenylsulfide to diphenylsulfoxide

The activity of complex heteropolytungstates of general formula B-α-[M<sup>II</sup><sub>4</sub>(H<sub>2</sub>O)<sub>2</sub>(PW<sub>9</sub>O<sub>34</sub>)<sub>2</sub>]<sup>10-</sup> with M= Co(II), Zn(II),...

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Autores principales: Egusquiza, María Gabriela, Ben Tayeb, Karima, Muñoz, Mercedes, Romanelli, Gustavo Pablo, Cabello, Carmen Inés, Botto, Irma Lía, Thomas, Horacio Jorge
Formato: Articulo
Lenguaje:Inglés
Publicado: 2009
Materias:
Química
Ciencias Exactas
Heteropolytungstates
Diphenylsulfoxides
Selective oxidation
Tert-butyl-hydroperoxide
Heteropolitungstatos
Difenilsulfóxidos
Oxidación selectiva
Tert-butilhidroperóxido
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/104497
http://hdl.handle.net/11336/56016
https://www.aqa.org.ar/images/anales/pdf9701/9701art15.pdf
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SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-104497
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Química
Ciencias Exactas
Heteropolytungstates
Diphenylsulfoxides
Selective oxidation
Tert-butyl-hydroperoxide
Heteropolitungstatos
Difenilsulfóxidos
Oxidación selectiva
Tert-butilhidroperóxido
spellingShingle Química
Ciencias Exactas
Heteropolytungstates
Diphenylsulfoxides
Selective oxidation
Tert-butyl-hydroperoxide
Heteropolitungstatos
Difenilsulfóxidos
Oxidación selectiva
Tert-butilhidroperóxido
Egusquiza, María Gabriela
Ben Tayeb, Karima
Muñoz, Mercedes
Romanelli, Gustavo Pablo
Cabello, Carmen Inés
Botto, Irma Lía
Thomas, Horacio Jorge
Potentiality of heteropolytungstates as catalysts in the selective oxidation of diphenylsulfide to diphenylsulfoxide
topic_facet Química
Ciencias Exactas
Heteropolytungstates
Diphenylsulfoxides
Selective oxidation
Tert-butyl-hydroperoxide
Heteropolitungstatos
Difenilsulfóxidos
Oxidación selectiva
Tert-butilhidroperóxido
description The activity of complex heteropolytungstates of general formula B-α-[M<sup>II</sup><sub>4</sub>(H<sub>2</sub>O)<sub>2</sub>(PW<sub>9</sub>O<sub>34</sub>)<sub>2</sub>]<sup>10-</sup> with M= Co(II), Zn(II), Mn(II) and Cu(II) (PWM) was investigated in the selective oxidation reaction of diphenylsulfide to diphenylsulfoxide in presence of <i>tert</i>-butylhydroperoxide as oxidant. The characterization of phases was performed by X Ray Powder Diffraction, XRD. All phases resulted isomorphous although PWCu is obtained as a mixture of two structural isomers [Cu<sub>2</sub>(H<sub>2</sub>O)<sub>2</sub>PW<sub>10</sub>O<sub>38</sub>]<sup>7-</sup>. The oxidation reaction was carried out in batch at 80°C using toluene as solvent and tbutylhydroperoxide 5-6 M in decane as oxidant for 6 h. The catalytic evaluation made by gas chromatography revealed a similar behavior with conversions of diphenylsulfide around 60% and high selectivity to diphenylsulfoxide near to 95% for most of phases studied while PWCu resulted the most active catalyst presenting a conversion of 84%. The activity rise was correlated with the increase of the oxidant character of the cluster metal(II).
format Articulo
Articulo
author Egusquiza, María Gabriela
Ben Tayeb, Karima
Muñoz, Mercedes
Romanelli, Gustavo Pablo
Cabello, Carmen Inés
Botto, Irma Lía
Thomas, Horacio Jorge
author_facet Egusquiza, María Gabriela
Ben Tayeb, Karima
Muñoz, Mercedes
Romanelli, Gustavo Pablo
Cabello, Carmen Inés
Botto, Irma Lía
Thomas, Horacio Jorge
author_sort Egusquiza, María Gabriela
title Potentiality of heteropolytungstates as catalysts in the selective oxidation of diphenylsulfide to diphenylsulfoxide
title_short Potentiality of heteropolytungstates as catalysts in the selective oxidation of diphenylsulfide to diphenylsulfoxide
title_full Potentiality of heteropolytungstates as catalysts in the selective oxidation of diphenylsulfide to diphenylsulfoxide
title_fullStr Potentiality of heteropolytungstates as catalysts in the selective oxidation of diphenylsulfide to diphenylsulfoxide
title_full_unstemmed Potentiality of heteropolytungstates as catalysts in the selective oxidation of diphenylsulfide to diphenylsulfoxide
title_sort potentiality of heteropolytungstates as catalysts in the selective oxidation of diphenylsulfide to diphenylsulfoxide
publishDate 2009
url http://sedici.unlp.edu.ar/handle/10915/104497
http://hdl.handle.net/11336/56016
https://www.aqa.org.ar/images/anales/pdf9701/9701art15.pdf
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