Sunflower oil hydrogenation on Pd/Al2O3 catalysts in single-phase conditions using supercritical propane

Several Pd catalysts were prepared on α and γ alumina using palladium acetylacetonate and palladium nitrate as a precursor. The characterization of these catalysts by H2 chemisorption, XRD and TEM microscopy confirm the presence of different dispersed metallic particles from 1.9 to 12.1 nm. These ca...

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Autores: Piqueras, Cristian Martin, Bottini, Susana Beatriz, Damiani, Daniel Eduardo
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2006
País:Argentina
Institución:Consejo Nacional de Investigaciones Científicas y Técnicas
Repositorio:CONICET Digital (CONICET)
Idioma:inglés
OAI Identifier:oai:ri.conicet.gov.ar:11336/37703
Acceso en línea:http://hdl.handle.net/11336/37703
Access Level:acceso abierto
Palabra clave:Hydrogenation
Propane
Sunflower Oil
Supercritical Fluid
https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
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spelling Sunflower oil hydrogenation on Pd/Al2O3 catalysts in single-phase conditions using supercritical propanePiqueras, Cristian MartinBottini, Susana BeatrizDamiani, Daniel EduardoHydrogenationPropaneSunflower OilSupercritical Fluidhttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2Several Pd catalysts were prepared on α and γ alumina using palladium acetylacetonate and palladium nitrate as a precursor. The characterization of these catalysts by H2 chemisorption, XRD and TEM microscopy confirm the presence of different dispersed metallic particles from 1.9 to 12.1 nm. These catalysts were tested in the sunflower oil hydrogenation under supercritical conditions using propane as solvent and 5% mol of hydrogen concentration. The well-known Weisz-Prater criterion was used to determine the extent of mass transport phenomena. While hydrogen mass transport was found free from limitations, oil transport had limitations in some experiments. The reaction is moderately structure sensitive since the turnover number decreases 3 times as the exposed metal percentage (metal dispersion) increases from 9 to 60%. An influence on the selectivities to trans isomers, monounsaturated and saturated fatty acids was found when the metallic particle size was decreased. These results are explained by the high adsorption strength of the high-unsaturated fatty acids onto the small particles and the promotion of a "shunt" reaction from linoleic to saturated compounds. © 2006 Elsevier B.V. All rights reserved.Fil: Piqueras, Cristian Martin. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; ArgentinaFil: Bottini, Susana Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; ArgentinaFil: Damiani, Daniel Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; ArgentinaElsevier Science2006-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/37703Piqueras, Cristian Martin; Bottini, Susana Beatriz; Damiani, Daniel Eduardo; Sunflower oil hydrogenation on Pd/Al2O3 catalysts in single-phase conditions using supercritical propane; Elsevier Science; Applied Catalysis A: General; 313; 2; 10-2006; 177-1880926-860XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.apcata.2006.07.023info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0926860X06005655info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2024-05-08T13:57:49Zoai:ri.conicet.gov.ar:11336/37703instacron: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:34982024-05-08 13:57:50.212CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Sunflower oil hydrogenation on Pd/Al2O3 catalysts in single-phase conditions using supercritical propane
title Sunflower oil hydrogenation on Pd/Al2O3 catalysts in single-phase conditions using supercritical propane
spellingShingle Sunflower oil hydrogenation on Pd/Al2O3 catalysts in single-phase conditions using supercritical propane
Piqueras, Cristian Martin
Hydrogenation
Propane
Sunflower Oil
Supercritical Fluid
https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
title_short Sunflower oil hydrogenation on Pd/Al2O3 catalysts in single-phase conditions using supercritical propane
title_full Sunflower oil hydrogenation on Pd/Al2O3 catalysts in single-phase conditions using supercritical propane
title_fullStr Sunflower oil hydrogenation on Pd/Al2O3 catalysts in single-phase conditions using supercritical propane
title_full_unstemmed Sunflower oil hydrogenation on Pd/Al2O3 catalysts in single-phase conditions using supercritical propane
title_sort Sunflower oil hydrogenation on Pd/Al2O3 catalysts in single-phase conditions using supercritical propane
dc.creator.none.fl_str_mv Piqueras, Cristian Martin
Bottini, Susana Beatriz
Damiani, Daniel Eduardo
author Piqueras, Cristian Martin
author_facet Piqueras, Cristian Martin
Bottini, Susana Beatriz
Damiani, Daniel Eduardo
author_role author
author2 Bottini, Susana Beatriz
Damiani, Daniel Eduardo
author2_role author
author
dc.subject.none.fl_str_mv Hydrogenation
Propane
Sunflower Oil
Supercritical Fluid
https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
topic Hydrogenation
Propane
Sunflower Oil
Supercritical Fluid
https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
description Several Pd catalysts were prepared on α and γ alumina using palladium acetylacetonate and palladium nitrate as a precursor. The characterization of these catalysts by H2 chemisorption, XRD and TEM microscopy confirm the presence of different dispersed metallic particles from 1.9 to 12.1 nm. These catalysts were tested in the sunflower oil hydrogenation under supercritical conditions using propane as solvent and 5% mol of hydrogen concentration. The well-known Weisz-Prater criterion was used to determine the extent of mass transport phenomena. While hydrogen mass transport was found free from limitations, oil transport had limitations in some experiments. The reaction is moderately structure sensitive since the turnover number decreases 3 times as the exposed metal percentage (metal dispersion) increases from 9 to 60%. An influence on the selectivities to trans isomers, monounsaturated and saturated fatty acids was found when the metallic particle size was decreased. These results are explained by the high adsorption strength of the high-unsaturated fatty acids onto the small particles and the promotion of a "shunt" reaction from linoleic to saturated compounds. © 2006 Elsevier B.V. All rights reserved.
publishDate 2006
dc.date.none.fl_str_mv 2006-10
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/11336/37703
Piqueras, Cristian Martin; Bottini, Susana Beatriz; Damiani, Daniel Eduardo; Sunflower oil hydrogenation on Pd/Al2O3 catalysts in single-phase conditions using supercritical propane; Elsevier Science; Applied Catalysis A: General; 313; 2; 10-2006; 177-188
0926-860X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/37703
identifier_str_mv Piqueras, Cristian Martin; Bottini, Susana Beatriz; Damiani, Daniel Eduardo; Sunflower oil hydrogenation on Pd/Al2O3 catalysts in single-phase conditions using supercritical propane; Elsevier Science; Applied Catalysis A: General; 313; 2; 10-2006; 177-188
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.2006.07.023
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0926860X06005655
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
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
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
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 15.811543

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