Copper Containing Silicates as Catalysts for Liquid Phase Cyclohexane Oxidation
Autor(a) principal: | |
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Data de Publicação: | 2002 |
Outros Autores: | , , , |
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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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 |
_version_ |
1750318164604878848 |