Ga 2 O 3 /Al 2 O 3 Catalysts for Propane Dehydrogenation: Effect of H 2 Treatment and Cofeeding

Autores
Gil, Sebastian Amar; Especel, Catherine; Passamonti, Francisco Javier; Montouillout, Valérie; Benitez, Viviana Monica; Epron, Florence
Año de publicación
2025
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
This study investigated the catalytic dehydrogenation of propane over uncalcined, calcined or pre-reduced gallium-supported alumina catalysts. The effects induced by a reductive pretreatment and hydrogen co-feeding (5 % and 50 % in volume in the gas mixture) on the catalytic performance were evaluated. For comparison, a nonsupported γ-Ga2O3 sample was prepared. The catalysts were characterized by different methods including XRD, TEM, SEM, NMR, TPR, FTIR, pyridine-FTIR and the model reaction of 3,3-dimethylbut1-ene isomerization. It was found that reductive pretreatment improved the propylene production in gas phase but decreased the initial conversion compared to the calcined sample. Hydrogen cofeeding positively impacted the catalytic stability of reduced catalysts, leading to a higher conversion after 240 min and reducing the deactivation of the catalyst up to 70 % as the amount of H2 increased in the stream. Moreover, improvement in the carbon balance and reduction of carbon deposited were observed at high H2 co-feeding ratio. The formation of gallium hydride species during the reduction pretreatment and H2 flowing was clearly identified, but their contribution in the PDH reaction can be considered as negligible compared to positive effect induced by the decrease in acidity due to the reducing pretreatment.
Fil: Gil, Sebastian Amar. Université de Poitiers; Francia
Fil: Especel, Catherine. Université de Poitiers; Francia
Fil: Passamonti, Francisco Javier. 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: Montouillout, Valérie. Université d Orléans; Francia
Fil: Benitez, Viviana Monica. 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: Epron, Florence. Université de Poitiers; Francia
Materia
Ga2O3/Al2O3 CATALYSTS
PROPANE
DEHYDROGENATION
EFFECT OF H2
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/282066
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/282066
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Ga 2 O 3 /Al 2 O 3 Catalysts for Propane Dehydrogenation: Effect of H 2 Treatment and CofeedingGil, Sebastian AmarEspecel, CatherinePassamonti, Francisco JavierMontouillout, ValérieBenitez, Viviana MonicaEpron, FlorenceGa2O3/Al2O3 CATALYSTSPROPANEDEHYDROGENATIONEFFECT OF H2https://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2This study investigated the catalytic dehydrogenation of propane over uncalcined, calcined or pre-reduced gallium-supported alumina catalysts. The effects induced by a reductive pretreatment and hydrogen co-feeding (5 % and 50 % in volume in the gas mixture) on the catalytic performance were evaluated. For comparison, a nonsupported γ-Ga2O3 sample was prepared. The catalysts were characterized by different methods including XRD, TEM, SEM, NMR, TPR, FTIR, pyridine-FTIR and the model reaction of 3,3-dimethylbut1-ene isomerization. It was found that reductive pretreatment improved the propylene production in gas phase but decreased the initial conversion compared to the calcined sample. Hydrogen cofeeding positively impacted the catalytic stability of reduced catalysts, leading to a higher conversion after 240 min and reducing the deactivation of the catalyst up to 70 % as the amount of H2 increased in the stream. Moreover, improvement in the carbon balance and reduction of carbon deposited were observed at high H2 co-feeding ratio. The formation of gallium hydride species during the reduction pretreatment and H2 flowing was clearly identified, but their contribution in the PDH reaction can be considered as negligible compared to positive effect induced by the decrease in acidity due to the reducing pretreatment.Fil: Gil, Sebastian Amar. Université de Poitiers; FranciaFil: Especel, Catherine. Université de Poitiers; FranciaFil: Passamonti, Francisco Javier. 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: Montouillout, Valérie. Université d Orléans; FranciaFil: Benitez, Viviana Monica. 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: Epron, Florence. Université de Poitiers; FranciaWiley VCH Verlag2025-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/282066Gil, Sebastian Amar; Especel, Catherine; Passamonti, Francisco Javier; Montouillout, Valérie; Benitez, Viviana Monica; et al.; Ga 2 O 3 /Al 2 O 3 Catalysts for Propane Dehydrogenation: Effect of H 2 Treatment and Cofeeding; Wiley VCH Verlag; Chemcatchem; 17; 6; 1-2025; 1-151867-3880CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://chemistry-europe.onlinelibrary.wiley.com/doi/10.1002/cctc.202401754info:eu-repo/semantics/altIdentifier/doi/10.1002/cctc.202401754info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2026-04-23T14:26:39Zoai:ri.conicet.gov.ar:11336/282066instacron: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:34982026-04-23 14:26:39.784CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Ga 2 O 3 /Al 2 O 3 Catalysts for Propane Dehydrogenation: Effect of H 2 Treatment and Cofeeding
title Ga 2 O 3 /Al 2 O 3 Catalysts for Propane Dehydrogenation: Effect of H 2 Treatment and Cofeeding
spellingShingle Ga 2 O 3 /Al 2 O 3 Catalysts for Propane Dehydrogenation: Effect of H 2 Treatment and Cofeeding
Gil, Sebastian Amar
Ga2O3/Al2O3 CATALYSTS
PROPANE
DEHYDROGENATION
EFFECT OF H2
title_short Ga 2 O 3 /Al 2 O 3 Catalysts for Propane Dehydrogenation: Effect of H 2 Treatment and Cofeeding
title_full Ga 2 O 3 /Al 2 O 3 Catalysts for Propane Dehydrogenation: Effect of H 2 Treatment and Cofeeding
title_fullStr Ga 2 O 3 /Al 2 O 3 Catalysts for Propane Dehydrogenation: Effect of H 2 Treatment and Cofeeding
title_full_unstemmed Ga 2 O 3 /Al 2 O 3 Catalysts for Propane Dehydrogenation: Effect of H 2 Treatment and Cofeeding
title_sort Ga 2 O 3 /Al 2 O 3 Catalysts for Propane Dehydrogenation: Effect of H 2 Treatment and Cofeeding
dc.creator.none.fl_str_mv Gil, Sebastian Amar
Especel, Catherine
Passamonti, Francisco Javier
Montouillout, Valérie
Benitez, Viviana Monica
Epron, Florence
author Gil, Sebastian Amar
author_facet Gil, Sebastian Amar
Especel, Catherine
Passamonti, Francisco Javier
Montouillout, Valérie
Benitez, Viviana Monica
Epron, Florence
author_role author
author2 Especel, Catherine
Passamonti, Francisco Javier
Montouillout, Valérie
Benitez, Viviana Monica
Epron, Florence
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Ga2O3/Al2O3 CATALYSTS
PROPANE
DEHYDROGENATION
EFFECT OF H2
topic Ga2O3/Al2O3 CATALYSTS
PROPANE
DEHYDROGENATION
EFFECT OF H2
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv This study investigated the catalytic dehydrogenation of propane over uncalcined, calcined or pre-reduced gallium-supported alumina catalysts. The effects induced by a reductive pretreatment and hydrogen co-feeding (5 % and 50 % in volume in the gas mixture) on the catalytic performance were evaluated. For comparison, a nonsupported γ-Ga2O3 sample was prepared. The catalysts were characterized by different methods including XRD, TEM, SEM, NMR, TPR, FTIR, pyridine-FTIR and the model reaction of 3,3-dimethylbut1-ene isomerization. It was found that reductive pretreatment improved the propylene production in gas phase but decreased the initial conversion compared to the calcined sample. Hydrogen cofeeding positively impacted the catalytic stability of reduced catalysts, leading to a higher conversion after 240 min and reducing the deactivation of the catalyst up to 70 % as the amount of H2 increased in the stream. Moreover, improvement in the carbon balance and reduction of carbon deposited were observed at high H2 co-feeding ratio. The formation of gallium hydride species during the reduction pretreatment and H2 flowing was clearly identified, but their contribution in the PDH reaction can be considered as negligible compared to positive effect induced by the decrease in acidity due to the reducing pretreatment.
Fil: Gil, Sebastian Amar. Université de Poitiers; Francia
Fil: Especel, Catherine. Université de Poitiers; Francia
Fil: Passamonti, Francisco Javier. 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: Montouillout, Valérie. Université d Orléans; Francia
Fil: Benitez, Viviana Monica. 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: Epron, Florence. Université de Poitiers; Francia
description This study investigated the catalytic dehydrogenation of propane over uncalcined, calcined or pre-reduced gallium-supported alumina catalysts. The effects induced by a reductive pretreatment and hydrogen co-feeding (5 % and 50 % in volume in the gas mixture) on the catalytic performance were evaluated. For comparison, a nonsupported γ-Ga2O3 sample was prepared. The catalysts were characterized by different methods including XRD, TEM, SEM, NMR, TPR, FTIR, pyridine-FTIR and the model reaction of 3,3-dimethylbut1-ene isomerization. It was found that reductive pretreatment improved the propylene production in gas phase but decreased the initial conversion compared to the calcined sample. Hydrogen cofeeding positively impacted the catalytic stability of reduced catalysts, leading to a higher conversion after 240 min and reducing the deactivation of the catalyst up to 70 % as the amount of H2 increased in the stream. Moreover, improvement in the carbon balance and reduction of carbon deposited were observed at high H2 co-feeding ratio. The formation of gallium hydride species during the reduction pretreatment and H2 flowing was clearly identified, but their contribution in the PDH reaction can be considered as negligible compared to positive effect induced by the decrease in acidity due to the reducing pretreatment.
publishDate 2025
dc.date.none.fl_str_mv 2025-01
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/11336/282066
Gil, Sebastian Amar; Especel, Catherine; Passamonti, Francisco Javier; Montouillout, Valérie; Benitez, Viviana Monica; et al.; Ga 2 O 3 /Al 2 O 3 Catalysts for Propane Dehydrogenation: Effect of H 2 Treatment and Cofeeding; Wiley VCH Verlag; Chemcatchem; 17; 6; 1-2025; 1-15
1867-3880
CONICET Digital
CONICET
url http://hdl.handle.net/11336/282066
identifier_str_mv Gil, Sebastian Amar; Especel, Catherine; Passamonti, Francisco Javier; Montouillout, Valérie; Benitez, Viviana Monica; et al.; Ga 2 O 3 /Al 2 O 3 Catalysts for Propane Dehydrogenation: Effect of H 2 Treatment and Cofeeding; Wiley VCH Verlag; Chemcatchem; 17; 6; 1-2025; 1-15
1867-3880
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://chemistry-europe.onlinelibrary.wiley.com/doi/10.1002/cctc.202401754
info:eu-repo/semantics/altIdentifier/doi/10.1002/cctc.202401754
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Wiley VCH Verlag
publisher.none.fl_str_mv Wiley VCH Verlag
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 13.05261

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