Experimental study of the deactivation of Pd on anodized aluminum monoliths during the partial hydrogenation of vegetable oil

Autores
Boldrini, Diego Emmanuel; Tonetto, Gabriela Marta; Damiani, Daniel Eduardo
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Partial hydrogenation of sunflower oil was studied over Pd/Al2O3/Al catalysts in a monolithic stirred reactor. The catalyst showed similar or even better activity and selectivity than conventional Pd/Al2O3 catalysts. However, in consecutive runs, a continuous decreasing activity was observed. In order to understand the deactivation phenomena, fresh and spent catalysts were characterized using temperature programmed reduction, N2 adsorption isotherms, dynamic H2 chemisorption, transmission electron microscopy (TEM), atomic absorption spectroscopy, inductively coupled plasma spectroscopy, diffuse reflectance infrared Fourier transform spectroscopy, ultrasound adherence tests, and X-ray photoelectron spectroscopy. Furthermore, an extensive number of catalytic tests under different operating conditions were carried out. The loss in activity was proportional to the reduction in metal dispersion. The decrease in Pd dispersion was due to the coverage of the Pd surface. The deactivation occurred due to fouling with reaction residues most probably coming from polymerization and/or cross-linking reactions. The catalysts can be regenerated ex situ using a careful desorption–washing–calcination process, although this requires further research because the temperatures required are too high for Al.
Fil: Boldrini, Diego Emmanuel. 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; Argentina
Fil: Tonetto, Gabriela Marta. 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; Argentina
Fil: 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; Argentina
Materia
Monolithic Catalyst
Hydrogenation
Vegetable Oil
Palladium
Deactivation
Oil Polymerization
Catalyst Regeneration
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:11336/23549
Acceder
id CONICETDig_c68e988a14a812e5663e4475de922432
oai_identifier_str oai:ri.conicet.gov.ar:11336/23549
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Experimental study of the deactivation of Pd on anodized aluminum monoliths during the partial hydrogenation of vegetable oilBoldrini, Diego EmmanuelTonetto, Gabriela MartaDamiani, Daniel EduardoMonolithic CatalystHydrogenationVegetable OilPalladiumDeactivationOil PolymerizationCatalyst Regenerationhttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2Partial hydrogenation of sunflower oil was studied over Pd/Al2O3/Al catalysts in a monolithic stirred reactor. The catalyst showed similar or even better activity and selectivity than conventional Pd/Al2O3 catalysts. However, in consecutive runs, a continuous decreasing activity was observed. In order to understand the deactivation phenomena, fresh and spent catalysts were characterized using temperature programmed reduction, N2 adsorption isotherms, dynamic H2 chemisorption, transmission electron microscopy (TEM), atomic absorption spectroscopy, inductively coupled plasma spectroscopy, diffuse reflectance infrared Fourier transform spectroscopy, ultrasound adherence tests, and X-ray photoelectron spectroscopy. Furthermore, an extensive number of catalytic tests under different operating conditions were carried out. The loss in activity was proportional to the reduction in metal dispersion. The decrease in Pd dispersion was due to the coverage of the Pd surface. The deactivation occurred due to fouling with reaction residues most probably coming from polymerization and/or cross-linking reactions. The catalysts can be regenerated ex situ using a careful desorption–washing–calcination process, although this requires further research because the temperatures required are too high for Al.Fil: Boldrini, Diego Emmanuel. 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: Tonetto, Gabriela Marta. 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 Science Sa2014-02-14info: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/11336/23549Boldrini, Diego Emmanuel; Tonetto, Gabriela Marta; Damiani, Daniel Eduardo; Experimental study of the deactivation of Pd on anodized aluminum monoliths during the partial hydrogenation of vegetable oil; Elsevier Science Sa; Chemical Engineering Journal; 270; 14-2-2014; 378-3841385-8947CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.cej.2015.02.029info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S1385894715002272info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:07:43Zoai:ri.conicet.gov.ar:11336/23549instacron: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 10:07:43.788CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Experimental study of the deactivation of Pd on anodized aluminum monoliths during the partial hydrogenation of vegetable oil
title Experimental study of the deactivation of Pd on anodized aluminum monoliths during the partial hydrogenation of vegetable oil
spellingShingle Experimental study of the deactivation of Pd on anodized aluminum monoliths during the partial hydrogenation of vegetable oil
Boldrini, Diego Emmanuel
Monolithic Catalyst
Hydrogenation
Vegetable Oil
Palladium
Deactivation
Oil Polymerization
Catalyst Regeneration
title_short Experimental study of the deactivation of Pd on anodized aluminum monoliths during the partial hydrogenation of vegetable oil
title_full Experimental study of the deactivation of Pd on anodized aluminum monoliths during the partial hydrogenation of vegetable oil
title_fullStr Experimental study of the deactivation of Pd on anodized aluminum monoliths during the partial hydrogenation of vegetable oil
title_full_unstemmed Experimental study of the deactivation of Pd on anodized aluminum monoliths during the partial hydrogenation of vegetable oil
title_sort Experimental study of the deactivation of Pd on anodized aluminum monoliths during the partial hydrogenation of vegetable oil
dc.creator.none.fl_str_mv Boldrini, Diego Emmanuel
Tonetto, Gabriela Marta
Damiani, Daniel Eduardo
author Boldrini, Diego Emmanuel
author_facet Boldrini, Diego Emmanuel
Tonetto, Gabriela Marta
Damiani, Daniel Eduardo
author_role author
author2 Tonetto, Gabriela Marta
Damiani, Daniel Eduardo
author2_role author
author
dc.subject.none.fl_str_mv Monolithic Catalyst
Hydrogenation
Vegetable Oil
Palladium
Deactivation
Oil Polymerization
Catalyst Regeneration
topic Monolithic Catalyst
Hydrogenation
Vegetable Oil
Palladium
Deactivation
Oil Polymerization
Catalyst Regeneration
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv Partial hydrogenation of sunflower oil was studied over Pd/Al2O3/Al catalysts in a monolithic stirred reactor. The catalyst showed similar or even better activity and selectivity than conventional Pd/Al2O3 catalysts. However, in consecutive runs, a continuous decreasing activity was observed. In order to understand the deactivation phenomena, fresh and spent catalysts were characterized using temperature programmed reduction, N2 adsorption isotherms, dynamic H2 chemisorption, transmission electron microscopy (TEM), atomic absorption spectroscopy, inductively coupled plasma spectroscopy, diffuse reflectance infrared Fourier transform spectroscopy, ultrasound adherence tests, and X-ray photoelectron spectroscopy. Furthermore, an extensive number of catalytic tests under different operating conditions were carried out. The loss in activity was proportional to the reduction in metal dispersion. The decrease in Pd dispersion was due to the coverage of the Pd surface. The deactivation occurred due to fouling with reaction residues most probably coming from polymerization and/or cross-linking reactions. The catalysts can be regenerated ex situ using a careful desorption–washing–calcination process, although this requires further research because the temperatures required are too high for Al.
Fil: Boldrini, Diego Emmanuel. 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; Argentina
Fil: Tonetto, Gabriela Marta. 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; Argentina
Fil: 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; Argentina
description Partial hydrogenation of sunflower oil was studied over Pd/Al2O3/Al catalysts in a monolithic stirred reactor. The catalyst showed similar or even better activity and selectivity than conventional Pd/Al2O3 catalysts. However, in consecutive runs, a continuous decreasing activity was observed. In order to understand the deactivation phenomena, fresh and spent catalysts were characterized using temperature programmed reduction, N2 adsorption isotherms, dynamic H2 chemisorption, transmission electron microscopy (TEM), atomic absorption spectroscopy, inductively coupled plasma spectroscopy, diffuse reflectance infrared Fourier transform spectroscopy, ultrasound adherence tests, and X-ray photoelectron spectroscopy. Furthermore, an extensive number of catalytic tests under different operating conditions were carried out. The loss in activity was proportional to the reduction in metal dispersion. The decrease in Pd dispersion was due to the coverage of the Pd surface. The deactivation occurred due to fouling with reaction residues most probably coming from polymerization and/or cross-linking reactions. The catalysts can be regenerated ex situ using a careful desorption–washing–calcination process, although this requires further research because the temperatures required are too high for Al.
publishDate 2014
dc.date.none.fl_str_mv 2014-02-14
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/11336/23549
Boldrini, Diego Emmanuel; Tonetto, Gabriela Marta; Damiani, Daniel Eduardo; Experimental study of the deactivation of Pd on anodized aluminum monoliths during the partial hydrogenation of vegetable oil; Elsevier Science Sa; Chemical Engineering Journal; 270; 14-2-2014; 378-384
1385-8947
CONICET Digital
CONICET
url http://hdl.handle.net/11336/23549
identifier_str_mv Boldrini, Diego Emmanuel; Tonetto, Gabriela Marta; Damiani, Daniel Eduardo; Experimental study of the deactivation of Pd on anodized aluminum monoliths during the partial hydrogenation of vegetable oil; Elsevier Science Sa; Chemical Engineering Journal; 270; 14-2-2014; 378-384
1385-8947
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.cej.2015.02.029
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S1385894715002272
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 Elsevier Science Sa
publisher.none.fl_str_mv Elsevier Science Sa
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_ 1842270015176310784
score 13.13397

Publicaciones similares