Promoting effect of zinc on the vapor-phase hydrogenation of crotonaldehyde over copper-based catalysts

Autores
Rodrigues, E.L.; Marchi, Alberto Julio; Apesteguia, Carlos Rodolfo; Bueno, J.M.C.
Año de publicación
2005
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The promoting effect of zinc for the vapor-phase hydrogenation of crotonaldehyde was studied on impregnated Cu/SiO2 and Cu-ZnO/SiO 2, and on coprecipitated Cu-Al2O3 and Cu x-ZnyO2y-ZnAl2O4 catalysts. The reaction was carried out in a tubular reactor at 120°C and atmospheric pressure. Samples were characterized by temperature-programmed reduction, X-ray diffraction, transmission electronic microscopy, diffuse reflectance FTIR spectroscopy of adsorbed CO, and X-ray photoelectron spectroscopy. Cu/SiO2 and Cu-Al2O3 catalysts reduced in hydrogen either at 300 or 500°C hydrogenated preferentially the CC bond of crotonaldehyde and gave more than 90% of selectivity to butyraldehyde. In contrast, the initial butyraldehyde selectivity on Cu-ZnO/SiO2 reduced at 500°C was only about 55%, essentially because the selectivity to crotyl alcohol significantly increased on this zinc-containing sample as compared to Cu/SiO2. This selectivity enhancement for hydrogenating the CO bond on Cu-ZnO/SiO2 reduced at 500°C was explained by considering that the high-temperature hydrogen treatment forms mobile ZnOx reduced species that strongly interact with Cu0 crystallites. The resulting Cu0-ZnOx species preferentially catalyze the crotyl alcohol formation from crotonaldehyde via a dual-site reaction pathway. A similar explanation was proposed to interpret the observed enhancement of the CO hydrogenation rate on ternary Cu-Zn-Al catalysts reduced at 500°C as compared to Cu-Al2O 3. Nevertheless, the Cu0-ZnOx species were unstable on stream and the selectivity to crotyl alcohol continuously decreased with reaction time on zinc-containing samples reduced at high temperatures.
Fil: Rodrigues, E.L.. Universidade Federal do São Carlos; Brasil
Fil: Marchi, Alberto Julio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera". Universidad Nacional del Litoral. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera"; Argentina
Fil: Apesteguia, Carlos Rodolfo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera". Universidad Nacional del Litoral. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera"; Argentina
Fil: Bueno, J.M.C.. Universidade Federal do São Carlos; Brasil
Materia
Copper-Based Catalysts
Crotonaldehyde Hydrogenation
Selective Hydrogenation
Zn-Promoted Catalysts
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/73022
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/73022
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Promoting effect of zinc on the vapor-phase hydrogenation of crotonaldehyde over copper-based catalystsRodrigues, E.L.Marchi, Alberto JulioApesteguia, Carlos RodolfoBueno, J.M.C.Copper-Based CatalystsCrotonaldehyde HydrogenationSelective HydrogenationZn-Promoted Catalystshttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2The promoting effect of zinc for the vapor-phase hydrogenation of crotonaldehyde was studied on impregnated Cu/SiO2 and Cu-ZnO/SiO 2, and on coprecipitated Cu-Al2O3 and Cu x-ZnyO2y-ZnAl2O4 catalysts. The reaction was carried out in a tubular reactor at 120°C and atmospheric pressure. Samples were characterized by temperature-programmed reduction, X-ray diffraction, transmission electronic microscopy, diffuse reflectance FTIR spectroscopy of adsorbed CO, and X-ray photoelectron spectroscopy. Cu/SiO2 and Cu-Al2O3 catalysts reduced in hydrogen either at 300 or 500°C hydrogenated preferentially the CC bond of crotonaldehyde and gave more than 90% of selectivity to butyraldehyde. In contrast, the initial butyraldehyde selectivity on Cu-ZnO/SiO2 reduced at 500°C was only about 55%, essentially because the selectivity to crotyl alcohol significantly increased on this zinc-containing sample as compared to Cu/SiO2. This selectivity enhancement for hydrogenating the CO bond on Cu-ZnO/SiO2 reduced at 500°C was explained by considering that the high-temperature hydrogen treatment forms mobile ZnOx reduced species that strongly interact with Cu0 crystallites. The resulting Cu0-ZnOx species preferentially catalyze the crotyl alcohol formation from crotonaldehyde via a dual-site reaction pathway. A similar explanation was proposed to interpret the observed enhancement of the CO hydrogenation rate on ternary Cu-Zn-Al catalysts reduced at 500°C as compared to Cu-Al2O 3. Nevertheless, the Cu0-ZnOx species were unstable on stream and the selectivity to crotyl alcohol continuously decreased with reaction time on zinc-containing samples reduced at high temperatures.Fil: Rodrigues, E.L.. Universidade Federal do São Carlos; BrasilFil: Marchi, Alberto Julio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera". Universidad Nacional del Litoral. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera"; ArgentinaFil: Apesteguia, Carlos Rodolfo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera". Universidad Nacional del Litoral. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera"; ArgentinaFil: Bueno, J.M.C.. Universidade Federal do São Carlos; BrasilElsevier Science2005-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/73022Rodrigues, E.L.; Marchi, Alberto Julio; Apesteguia, Carlos Rodolfo; Bueno, J.M.C.; Promoting effect of zinc on the vapor-phase hydrogenation of crotonaldehyde over copper-based catalysts; Elsevier Science; Applied Catalysis A: General; 294; 2; 10-2005; 197-2070926-860XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.apcata.2005.07.029info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:01:31Zoai:ri.conicet.gov.ar:11336/73022instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 10:01:31.958CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Promoting effect of zinc on the vapor-phase hydrogenation of crotonaldehyde over copper-based catalysts
title Promoting effect of zinc on the vapor-phase hydrogenation of crotonaldehyde over copper-based catalysts
spellingShingle Promoting effect of zinc on the vapor-phase hydrogenation of crotonaldehyde over copper-based catalysts
Rodrigues, E.L.
Copper-Based Catalysts
Crotonaldehyde Hydrogenation
Selective Hydrogenation
Zn-Promoted Catalysts
title_short Promoting effect of zinc on the vapor-phase hydrogenation of crotonaldehyde over copper-based catalysts
title_full Promoting effect of zinc on the vapor-phase hydrogenation of crotonaldehyde over copper-based catalysts
title_fullStr Promoting effect of zinc on the vapor-phase hydrogenation of crotonaldehyde over copper-based catalysts
title_full_unstemmed Promoting effect of zinc on the vapor-phase hydrogenation of crotonaldehyde over copper-based catalysts
title_sort Promoting effect of zinc on the vapor-phase hydrogenation of crotonaldehyde over copper-based catalysts
dc.creator.none.fl_str_mv Rodrigues, E.L.
Marchi, Alberto Julio
Apesteguia, Carlos Rodolfo
Bueno, J.M.C.
author Rodrigues, E.L.
author_facet Rodrigues, E.L.
Marchi, Alberto Julio
Apesteguia, Carlos Rodolfo
Bueno, J.M.C.
author_role author
author2 Marchi, Alberto Julio
Apesteguia, Carlos Rodolfo
Bueno, J.M.C.
author2_role author
author
author
dc.subject.none.fl_str_mv Copper-Based Catalysts
Crotonaldehyde Hydrogenation
Selective Hydrogenation
Zn-Promoted Catalysts
topic Copper-Based Catalysts
Crotonaldehyde Hydrogenation
Selective Hydrogenation
Zn-Promoted Catalysts
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv The promoting effect of zinc for the vapor-phase hydrogenation of crotonaldehyde was studied on impregnated Cu/SiO2 and Cu-ZnO/SiO 2, and on coprecipitated Cu-Al2O3 and Cu x-ZnyO2y-ZnAl2O4 catalysts. The reaction was carried out in a tubular reactor at 120°C and atmospheric pressure. Samples were characterized by temperature-programmed reduction, X-ray diffraction, transmission electronic microscopy, diffuse reflectance FTIR spectroscopy of adsorbed CO, and X-ray photoelectron spectroscopy. Cu/SiO2 and Cu-Al2O3 catalysts reduced in hydrogen either at 300 or 500°C hydrogenated preferentially the CC bond of crotonaldehyde and gave more than 90% of selectivity to butyraldehyde. In contrast, the initial butyraldehyde selectivity on Cu-ZnO/SiO2 reduced at 500°C was only about 55%, essentially because the selectivity to crotyl alcohol significantly increased on this zinc-containing sample as compared to Cu/SiO2. This selectivity enhancement for hydrogenating the CO bond on Cu-ZnO/SiO2 reduced at 500°C was explained by considering that the high-temperature hydrogen treatment forms mobile ZnOx reduced species that strongly interact with Cu0 crystallites. The resulting Cu0-ZnOx species preferentially catalyze the crotyl alcohol formation from crotonaldehyde via a dual-site reaction pathway. A similar explanation was proposed to interpret the observed enhancement of the CO hydrogenation rate on ternary Cu-Zn-Al catalysts reduced at 500°C as compared to Cu-Al2O 3. Nevertheless, the Cu0-ZnOx species were unstable on stream and the selectivity to crotyl alcohol continuously decreased with reaction time on zinc-containing samples reduced at high temperatures.
Fil: Rodrigues, E.L.. Universidade Federal do São Carlos; Brasil
Fil: Marchi, Alberto Julio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera". Universidad Nacional del Litoral. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera"; Argentina
Fil: Apesteguia, Carlos Rodolfo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera". Universidad Nacional del Litoral. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera"; Argentina
Fil: Bueno, J.M.C.. Universidade Federal do São Carlos; Brasil
description The promoting effect of zinc for the vapor-phase hydrogenation of crotonaldehyde was studied on impregnated Cu/SiO2 and Cu-ZnO/SiO 2, and on coprecipitated Cu-Al2O3 and Cu x-ZnyO2y-ZnAl2O4 catalysts. The reaction was carried out in a tubular reactor at 120°C and atmospheric pressure. Samples were characterized by temperature-programmed reduction, X-ray diffraction, transmission electronic microscopy, diffuse reflectance FTIR spectroscopy of adsorbed CO, and X-ray photoelectron spectroscopy. Cu/SiO2 and Cu-Al2O3 catalysts reduced in hydrogen either at 300 or 500°C hydrogenated preferentially the CC bond of crotonaldehyde and gave more than 90% of selectivity to butyraldehyde. In contrast, the initial butyraldehyde selectivity on Cu-ZnO/SiO2 reduced at 500°C was only about 55%, essentially because the selectivity to crotyl alcohol significantly increased on this zinc-containing sample as compared to Cu/SiO2. This selectivity enhancement for hydrogenating the CO bond on Cu-ZnO/SiO2 reduced at 500°C was explained by considering that the high-temperature hydrogen treatment forms mobile ZnOx reduced species that strongly interact with Cu0 crystallites. The resulting Cu0-ZnOx species preferentially catalyze the crotyl alcohol formation from crotonaldehyde via a dual-site reaction pathway. A similar explanation was proposed to interpret the observed enhancement of the CO hydrogenation rate on ternary Cu-Zn-Al catalysts reduced at 500°C as compared to Cu-Al2O 3. Nevertheless, the Cu0-ZnOx species were unstable on stream and the selectivity to crotyl alcohol continuously decreased with reaction time on zinc-containing samples reduced at high temperatures.
publishDate 2005
dc.date.none.fl_str_mv 2005-10
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
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://hdl.handle.net/11336/73022
Rodrigues, E.L.; Marchi, Alberto Julio; Apesteguia, Carlos Rodolfo; Bueno, J.M.C.; Promoting effect of zinc on the vapor-phase hydrogenation of crotonaldehyde over copper-based catalysts; Elsevier Science; Applied Catalysis A: General; 294; 2; 10-2005; 197-207
0926-860X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/73022
identifier_str_mv Rodrigues, E.L.; Marchi, Alberto Julio; Apesteguia, Carlos Rodolfo; Bueno, J.M.C.; Promoting effect of zinc on the vapor-phase hydrogenation of crotonaldehyde over copper-based catalysts; Elsevier Science; Applied Catalysis A: General; 294; 2; 10-2005; 197-207
0926-860X
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.apcata.2005.07.029
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science
publisher.none.fl_str_mv Elsevier Science
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.13397

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