Dehydrogenation and oxidative dehydrogenation of alcohols on silica supported chromium catalysts

Autores
Parentis, Monica Liliana; Bonini, Norberto Alejandro; Gonzo, Elio Emilio
Año de publicación
2002
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The catalytic activity of Cr/SiO2 (0.43 to 2.8% chromium by weight), prepared by the ion exchange method, for the dehydrogenation (573 K to 673 K)and oxidative dehydrogenation (503 K to 558 K) of alcohols has been investigated. The results obtained are consistent with the hypothesis that Lewis pyridine centers of chromium are the active sites for alcohol dehydrogenation. At 593 K the selectivity to aldehyde is 70% while selectivity to acetone is 62%, for pure dehydrogenation. The dehydrogenation rate of secondary alcohol is one order of magnitude higher than that observed for primary ones. The catalytic activity for oxidehydrogenation is 12 times higher than for pure dehydrogenation and the reaction rate of primary alcohols are higher than for secondary ones. When the ratio of oxigen to alcohol partial presure is 1:2 or above, the selectivity to aldehydes reach values of 97%, 89% and 80%, for ethanol, propanol and butanol, respectively, while the selectivity for secondary alcohols remains as in dehydrogenation (60%).
Fil: Parentis, Monica Liliana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Investigaciones para la Industria Química. Universidad Nacional de Salta. Facultad de Ingeniería. Instituto de Investigaciones para la Industria Química; Argentina
Fil: Bonini, Norberto Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Investigaciones para la Industria Química. Universidad Nacional de Salta. Facultad de Ingeniería. Instituto de Investigaciones para la Industria Química; Argentina
Fil: Gonzo, Elio Emilio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Investigaciones para la Industria Química. Universidad Nacional de Salta. Facultad de Ingeniería. Instituto de Investigaciones para la Industria Química; Argentina
Materia
Chromium Catalysts
Ion Exchange
Alcohol Dehydrogenation
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:11336/73078
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/73078
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Dehydrogenation and oxidative dehydrogenation of alcohols on silica supported chromium catalystsParentis, Monica LilianaBonini, Norberto AlejandroGonzo, Elio EmilioChromium CatalystsIon ExchangeAlcohol Dehydrogenationhttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2The catalytic activity of Cr/SiO2 (0.43 to 2.8% chromium by weight), prepared by the ion exchange method, for the dehydrogenation (573 K to 673 K)and oxidative dehydrogenation (503 K to 558 K) of alcohols has been investigated. The results obtained are consistent with the hypothesis that Lewis pyridine centers of chromium are the active sites for alcohol dehydrogenation. At 593 K the selectivity to aldehyde is 70% while selectivity to acetone is 62%, for pure dehydrogenation. The dehydrogenation rate of secondary alcohol is one order of magnitude higher than that observed for primary ones. The catalytic activity for oxidehydrogenation is 12 times higher than for pure dehydrogenation and the reaction rate of primary alcohols are higher than for secondary ones. When the ratio of oxigen to alcohol partial presure is 1:2 or above, the selectivity to aldehydes reach values of 97%, 89% and 80%, for ethanol, propanol and butanol, respectively, while the selectivity for secondary alcohols remains as in dehydrogenation (60%).Fil: Parentis, Monica Liliana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Investigaciones para la Industria Química. Universidad Nacional de Salta. Facultad de Ingeniería. Instituto de Investigaciones para la Industria Química; ArgentinaFil: Bonini, Norberto Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Investigaciones para la Industria Química. Universidad Nacional de Salta. Facultad de Ingeniería. Instituto de Investigaciones para la Industria Química; ArgentinaFil: Gonzo, Elio Emilio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Investigaciones para la Industria Química. Universidad Nacional de Salta. Facultad de Ingeniería. Instituto de Investigaciones para la Industria Química; ArgentinaPlanta Piloto de Ingeniería Química2002-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/73078Parentis, Monica Liliana; Bonini, Norberto Alejandro; Gonzo, Elio Emilio; Dehydrogenation and oxidative dehydrogenation of alcohols on silica supported chromium catalysts; Planta Piloto de Ingeniería Química; Latin American Applied Research; 32; 1; 3-2002; 41-460327-07931851-8796CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.laar.uns.edu.ar/indexes/artic_v3201/32_(2002)_041_46.pdfinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:21:46Zoai:ri.conicet.gov.ar:11336/73078instacron: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:34982025-09-29 10:21:46.911CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Dehydrogenation and oxidative dehydrogenation of alcohols on silica supported chromium catalysts
title Dehydrogenation and oxidative dehydrogenation of alcohols on silica supported chromium catalysts
spellingShingle Dehydrogenation and oxidative dehydrogenation of alcohols on silica supported chromium catalysts
Parentis, Monica Liliana
Chromium Catalysts
Ion Exchange
Alcohol Dehydrogenation
title_short Dehydrogenation and oxidative dehydrogenation of alcohols on silica supported chromium catalysts
title_full Dehydrogenation and oxidative dehydrogenation of alcohols on silica supported chromium catalysts
title_fullStr Dehydrogenation and oxidative dehydrogenation of alcohols on silica supported chromium catalysts
title_full_unstemmed Dehydrogenation and oxidative dehydrogenation of alcohols on silica supported chromium catalysts
title_sort Dehydrogenation and oxidative dehydrogenation of alcohols on silica supported chromium catalysts
dc.creator.none.fl_str_mv Parentis, Monica Liliana
Bonini, Norberto Alejandro
Gonzo, Elio Emilio
author Parentis, Monica Liliana
author_facet Parentis, Monica Liliana
Bonini, Norberto Alejandro
Gonzo, Elio Emilio
author_role author
author2 Bonini, Norberto Alejandro
Gonzo, Elio Emilio
author2_role author
author
dc.subject.none.fl_str_mv Chromium Catalysts
Ion Exchange
Alcohol Dehydrogenation
topic Chromium Catalysts
Ion Exchange
Alcohol Dehydrogenation
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 catalytic activity of Cr/SiO2 (0.43 to 2.8% chromium by weight), prepared by the ion exchange method, for the dehydrogenation (573 K to 673 K)and oxidative dehydrogenation (503 K to 558 K) of alcohols has been investigated. The results obtained are consistent with the hypothesis that Lewis pyridine centers of chromium are the active sites for alcohol dehydrogenation. At 593 K the selectivity to aldehyde is 70% while selectivity to acetone is 62%, for pure dehydrogenation. The dehydrogenation rate of secondary alcohol is one order of magnitude higher than that observed for primary ones. The catalytic activity for oxidehydrogenation is 12 times higher than for pure dehydrogenation and the reaction rate of primary alcohols are higher than for secondary ones. When the ratio of oxigen to alcohol partial presure is 1:2 or above, the selectivity to aldehydes reach values of 97%, 89% and 80%, for ethanol, propanol and butanol, respectively, while the selectivity for secondary alcohols remains as in dehydrogenation (60%).
Fil: Parentis, Monica Liliana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Investigaciones para la Industria Química. Universidad Nacional de Salta. Facultad de Ingeniería. Instituto de Investigaciones para la Industria Química; Argentina
Fil: Bonini, Norberto Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Investigaciones para la Industria Química. Universidad Nacional de Salta. Facultad de Ingeniería. Instituto de Investigaciones para la Industria Química; Argentina
Fil: Gonzo, Elio Emilio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Investigaciones para la Industria Química. Universidad Nacional de Salta. Facultad de Ingeniería. Instituto de Investigaciones para la Industria Química; Argentina
description The catalytic activity of Cr/SiO2 (0.43 to 2.8% chromium by weight), prepared by the ion exchange method, for the dehydrogenation (573 K to 673 K)and oxidative dehydrogenation (503 K to 558 K) of alcohols has been investigated. The results obtained are consistent with the hypothesis that Lewis pyridine centers of chromium are the active sites for alcohol dehydrogenation. At 593 K the selectivity to aldehyde is 70% while selectivity to acetone is 62%, for pure dehydrogenation. The dehydrogenation rate of secondary alcohol is one order of magnitude higher than that observed for primary ones. The catalytic activity for oxidehydrogenation is 12 times higher than for pure dehydrogenation and the reaction rate of primary alcohols are higher than for secondary ones. When the ratio of oxigen to alcohol partial presure is 1:2 or above, the selectivity to aldehydes reach values of 97%, 89% and 80%, for ethanol, propanol and butanol, respectively, while the selectivity for secondary alcohols remains as in dehydrogenation (60%).
publishDate 2002
dc.date.none.fl_str_mv 2002-03
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/11336/73078
Parentis, Monica Liliana; Bonini, Norberto Alejandro; Gonzo, Elio Emilio; Dehydrogenation and oxidative dehydrogenation of alcohols on silica supported chromium catalysts; Planta Piloto de Ingeniería Química; Latin American Applied Research; 32; 1; 3-2002; 41-46
0327-0793
1851-8796
CONICET Digital
CONICET
url http://hdl.handle.net/11336/73078
identifier_str_mv Parentis, Monica Liliana; Bonini, Norberto Alejandro; Gonzo, Elio Emilio; Dehydrogenation and oxidative dehydrogenation of alcohols on silica supported chromium catalysts; Planta Piloto de Ingeniería Química; Latin American Applied Research; 32; 1; 3-2002; 41-46
0327-0793
1851-8796
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.laar.uns.edu.ar/indexes/artic_v3201/32_(2002)_041_46.pdf
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
dc.publisher.none.fl_str_mv Planta Piloto de Ingeniería Química
publisher.none.fl_str_mv Planta Piloto de Ingeniería Química
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
_version_ 1844614207584075776
score 13.070432

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