Copper Containing Silicates as Catalysts for Liquid Phase Cyclohexane Oxidation

Detalhes bibliográficos
Autor(a) principal: Cruz,Rosenira S. da
Data de Publicação: 2002
Outros Autores: Silva,Juliana M. de S. e, Arnold,Ulrich, Sercheli,Maurício S., Schuchardt,Ulf
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Journal of the Brazilian Chemical Society (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532002000200007
Resumo: Copper containing silicates have been prepared by an acid-catalyzed sol-gel process. The materials were characterized by X-ray diffraction and fluorescence, EPR spectroscopy, elemental analysis, N2-physisorption, thermogravimetry, differential scanning calorimetry, temperature-programmed reduction, FTIR and UV/VIS spectroscopy. The silicates were shown to be efficient catalysts for the oxidation of cyclohexane with tert-butyl hydroperoxide as oxidant. Cyclohexanol and cyclohexanone were obtained as the main products. The metal was shown to be weakly bound to the silicate matrix and metal leaching was observed. Leaching was quantified by X-ray fluorescence and leaching tests showed that the catalytic activity is due to supported copper species. Leached copper showed no activity in the homogeneous phase.
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spelling Copper Containing Silicates as Catalysts for Liquid Phase Cyclohexane Oxidationsol-gel processcopper containing silicatescyclohexane oxidationtert-butyl hydroperoxideleachingCopper containing silicates have been prepared by an acid-catalyzed sol-gel process. The materials were characterized by X-ray diffraction and fluorescence, EPR spectroscopy, elemental analysis, N2-physisorption, thermogravimetry, differential scanning calorimetry, temperature-programmed reduction, FTIR and UV/VIS spectroscopy. The silicates were shown to be efficient catalysts for the oxidation of cyclohexane with tert-butyl hydroperoxide as oxidant. Cyclohexanol and cyclohexanone were obtained as the main products. The metal was shown to be weakly bound to the silicate matrix and metal leaching was observed. Leaching was quantified by X-ray fluorescence and leaching tests showed that the catalytic activity is due to supported copper species. Leached copper showed no activity in the homogeneous phase.Sociedade Brasileira de Química2002-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532002000200007Journal of the Brazilian Chemical Society v.13 n.2 2002reponame:Journal of the Brazilian Chemical Society (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0103-50532002000200007info:eu-repo/semantics/openAccessCruz,Rosenira S. daSilva,Juliana M. de S. eArnold,UlrichSercheli,Maurício S.Schuchardt,Ulfeng2002-06-25T00:00:00Zoai:scielo:S0103-50532002000200007Revistahttp://jbcs.sbq.org.brONGhttps://old.scielo.br/oai/scielo-oai.php||office@jbcs.sbq.org.br1678-47900103-5053opendoar:2002-06-25T00:00Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv Copper Containing Silicates as Catalysts for Liquid Phase Cyclohexane Oxidation
title Copper Containing Silicates as Catalysts for Liquid Phase Cyclohexane Oxidation
spellingShingle Copper Containing Silicates as Catalysts for Liquid Phase Cyclohexane Oxidation
Cruz,Rosenira S. da
sol-gel process
copper containing silicates
cyclohexane oxidation
tert-butyl hydroperoxide
leaching
title_short Copper Containing Silicates as Catalysts for Liquid Phase Cyclohexane Oxidation
title_full Copper Containing Silicates as Catalysts for Liquid Phase Cyclohexane Oxidation
title_fullStr Copper Containing Silicates as Catalysts for Liquid Phase Cyclohexane Oxidation
title_full_unstemmed Copper Containing Silicates as Catalysts for Liquid Phase Cyclohexane Oxidation
title_sort Copper Containing Silicates as Catalysts for Liquid Phase Cyclohexane Oxidation
author Cruz,Rosenira S. da
author_facet Cruz,Rosenira S. da
Silva,Juliana M. de S. e
Arnold,Ulrich
Sercheli,Maurício S.
Schuchardt,Ulf
author_role author
author2 Silva,Juliana M. de S. e
Arnold,Ulrich
Sercheli,Maurício S.
Schuchardt,Ulf
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Cruz,Rosenira S. da
Silva,Juliana M. de S. e
Arnold,Ulrich
Sercheli,Maurício S.
Schuchardt,Ulf
dc.subject.por.fl_str_mv sol-gel process
copper containing silicates
cyclohexane oxidation
tert-butyl hydroperoxide
leaching
topic sol-gel process
copper containing silicates
cyclohexane oxidation
tert-butyl hydroperoxide
leaching
description Copper containing silicates have been prepared by an acid-catalyzed sol-gel process. The materials were characterized by X-ray diffraction and fluorescence, EPR spectroscopy, elemental analysis, N2-physisorption, thermogravimetry, differential scanning calorimetry, temperature-programmed reduction, FTIR and UV/VIS spectroscopy. The silicates were shown to be efficient catalysts for the oxidation of cyclohexane with tert-butyl hydroperoxide as oxidant. Cyclohexanol and cyclohexanone were obtained as the main products. The metal was shown to be weakly bound to the silicate matrix and metal leaching was observed. Leaching was quantified by X-ray fluorescence and leaching tests showed that the catalytic activity is due to supported copper species. Leached copper showed no activity in the homogeneous phase.
publishDate 2002
dc.date.none.fl_str_mv 2002-01-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532002000200007
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532002000200007
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0103-50532002000200007
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Brasileira de Química
publisher.none.fl_str_mv Sociedade Brasileira de Química
dc.source.none.fl_str_mv Journal of the Brazilian Chemical Society v.13 n.2 2002
reponame:Journal of the Brazilian Chemical Society (Online)
instname:Sociedade Brasileira de Química (SBQ)
instacron:SBQ
instname_str Sociedade Brasileira de Química (SBQ)
instacron_str SBQ
institution SBQ
reponame_str Journal of the Brazilian Chemical Society (Online)
collection Journal of the Brazilian Chemical Society (Online)
repository.name.fl_str_mv Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)
repository.mail.fl_str_mv ||office@jbcs.sbq.org.br
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