On the activity of low-loaded CeOx-Pd/alpha-Al2O3 and Pd-CeOx/alpha-Al2O3 catalysts for CO2 hydrogenation

Autores
Costilla, Ignacio Oscar; Gigola, Carlos Eugenio; Sanchez, Miguel Dario
Año de publicación
2025
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In this study the catalytic properties of low-loaded CeOx-Pd/α-Al2O3 and Pd-CeOx/α-Al2O3 catalysts for CO2 hydrogenation with and without CH4 at 873 K is investigated. This study is the first carried out on promoted low Pd loading catalyst at high temperature. The catalysts showed high activity for the RWGS reaction, meeting the CAMERE process requirements. The addition of ceria (0.8 - 5.3 wt%) significantly improved CO2 conversionand CO selectivity. Interestingly, the impregnation order of Ce and Pd did not affect the catalytic performance. CeOx-Pd/α-Al2O3 catalysts produced almost exclusively CO, while Pd-CeOx/α-Al2O3 achieved selectivities above 99 %. The reaction rate increased by about 5 times compared to Pd/α-Al2O3, depending on Ce content. Pd-CeOx/α-Al2O3 showed rate independence with the Ce loading, while CeOx-Pd/α-Al2O3 exhibited a maximum rate for 3 wt% of Ce. Long-term experiments confirmed the stability of Pd-CeOx/α-Al2O3 catalysts. FTIR spectroscopy and chemisorption measurements confirmed the surface characteristics of fresh and used catalysts. CeOx-Pd/α-Al2O3 catalysts exhibited a surfa ce consistent with the absence of CH4 formation and promoted the formation of adsorbedbicarbonate species, potentially as intermediate reactions involving CO2 and surface hydroxyls.
Fil: Costilla, Ignacio Oscar. 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: Gigola, Carlos Eugenio. 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: Sanchez, Miguel Dario. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Física del Sur. Universidad Nacional del Sur. Departamento de Física. Instituto de Física del Sur; Argentina. Universidad Nacional del Sur. Departamento de Física; Argentina
Materia
CE-PD INTERACTION
FTIR CHARACTERIZATION
RWGS
HIGH-TEMPERATURE RATES
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/289311
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/289311
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling On the activity of low-loaded CeOx-Pd/alpha-Al2O3 and Pd-CeOx/alpha-Al2O3 catalysts for CO2 hydrogenationCostilla, Ignacio OscarGigola, Carlos EugenioSanchez, Miguel DarioCE-PD INTERACTIONFTIR CHARACTERIZATIONRWGSHIGH-TEMPERATURE RATEShttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1https://purl.org/becyt/ford/2.10https://purl.org/becyt/ford/2https://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2In this study the catalytic properties of low-loaded CeOx-Pd/α-Al2O3 and Pd-CeOx/α-Al2O3 catalysts for CO2 hydrogenation with and without CH4 at 873 K is investigated. This study is the first carried out on promoted low Pd loading catalyst at high temperature. The catalysts showed high activity for the RWGS reaction, meeting the CAMERE process requirements. The addition of ceria (0.8 - 5.3 wt%) significantly improved CO2 conversionand CO selectivity. Interestingly, the impregnation order of Ce and Pd did not affect the catalytic performance. CeOx-Pd/α-Al2O3 catalysts produced almost exclusively CO, while Pd-CeOx/α-Al2O3 achieved selectivities above 99 %. The reaction rate increased by about 5 times compared to Pd/α-Al2O3, depending on Ce content. Pd-CeOx/α-Al2O3 showed rate independence with the Ce loading, while CeOx-Pd/α-Al2O3 exhibited a maximum rate for 3 wt% of Ce. Long-term experiments confirmed the stability of Pd-CeOx/α-Al2O3 catalysts. FTIR spectroscopy and chemisorption measurements confirmed the surface characteristics of fresh and used catalysts. CeOx-Pd/α-Al2O3 catalysts exhibited a surfa ce consistent with the absence of CH4 formation and promoted the formation of adsorbedbicarbonate species, potentially as intermediate reactions involving CO2 and surface hydroxyls.Fil: Costilla, Ignacio Oscar. 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: Gigola, Carlos Eugenio. 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: Sanchez, Miguel Dario. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Física del Sur. Universidad Nacional del Sur. Departamento de Física. Instituto de Física del Sur; Argentina. Universidad Nacional del Sur. Departamento de Física; ArgentinaPlanta Piloto de Ingeniería Química2025-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/289311Costilla, Ignacio Oscar; Gigola, Carlos Eugenio; Sanchez, Miguel Dario; On the activity of low-loaded CeOx-Pd/alpha-Al2O3 and Pd-CeOx/alpha-Al2O3 catalysts for CO2 hydrogenation; Planta Piloto de Ingeniería Química; Latin American Applied Research; 55; 2; 4-2025; 185-1920327-07931851-8796CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://laar.plapiqui.edu.ar/OJS/index.php/laar/article/view/3498info:eu-repo/semantics/altIdentifier/doi/10.52292/j.laar.2025.3498info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2026-06-17T09:37:53Zoai:ri.conicet.gov.ar:11336/289311instacron: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:34982026-06-17 09:37:53.722CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv On the activity of low-loaded CeOx-Pd/alpha-Al2O3 and Pd-CeOx/alpha-Al2O3 catalysts for CO2 hydrogenation
title On the activity of low-loaded CeOx-Pd/alpha-Al2O3 and Pd-CeOx/alpha-Al2O3 catalysts for CO2 hydrogenation
spellingShingle On the activity of low-loaded CeOx-Pd/alpha-Al2O3 and Pd-CeOx/alpha-Al2O3 catalysts for CO2 hydrogenation
Costilla, Ignacio Oscar
CE-PD INTERACTION
FTIR CHARACTERIZATION
RWGS
HIGH-TEMPERATURE RATES
title_short On the activity of low-loaded CeOx-Pd/alpha-Al2O3 and Pd-CeOx/alpha-Al2O3 catalysts for CO2 hydrogenation
title_full On the activity of low-loaded CeOx-Pd/alpha-Al2O3 and Pd-CeOx/alpha-Al2O3 catalysts for CO2 hydrogenation
title_fullStr On the activity of low-loaded CeOx-Pd/alpha-Al2O3 and Pd-CeOx/alpha-Al2O3 catalysts for CO2 hydrogenation
title_full_unstemmed On the activity of low-loaded CeOx-Pd/alpha-Al2O3 and Pd-CeOx/alpha-Al2O3 catalysts for CO2 hydrogenation
title_sort On the activity of low-loaded CeOx-Pd/alpha-Al2O3 and Pd-CeOx/alpha-Al2O3 catalysts for CO2 hydrogenation
dc.creator.none.fl_str_mv Costilla, Ignacio Oscar
Gigola, Carlos Eugenio
Sanchez, Miguel Dario
author Costilla, Ignacio Oscar
author_facet Costilla, Ignacio Oscar
Gigola, Carlos Eugenio
Sanchez, Miguel Dario
author_role author
author2 Gigola, Carlos Eugenio
Sanchez, Miguel Dario
author2_role author
author
dc.subject.none.fl_str_mv CE-PD INTERACTION
FTIR CHARACTERIZATION
RWGS
HIGH-TEMPERATURE RATES
topic CE-PD INTERACTION
FTIR CHARACTERIZATION
RWGS
HIGH-TEMPERATURE RATES
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
https://purl.org/becyt/ford/2.10
https://purl.org/becyt/ford/2
https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv In this study the catalytic properties of low-loaded CeOx-Pd/α-Al2O3 and Pd-CeOx/α-Al2O3 catalysts for CO2 hydrogenation with and without CH4 at 873 K is investigated. This study is the first carried out on promoted low Pd loading catalyst at high temperature. The catalysts showed high activity for the RWGS reaction, meeting the CAMERE process requirements. The addition of ceria (0.8 - 5.3 wt%) significantly improved CO2 conversionand CO selectivity. Interestingly, the impregnation order of Ce and Pd did not affect the catalytic performance. CeOx-Pd/α-Al2O3 catalysts produced almost exclusively CO, while Pd-CeOx/α-Al2O3 achieved selectivities above 99 %. The reaction rate increased by about 5 times compared to Pd/α-Al2O3, depending on Ce content. Pd-CeOx/α-Al2O3 showed rate independence with the Ce loading, while CeOx-Pd/α-Al2O3 exhibited a maximum rate for 3 wt% of Ce. Long-term experiments confirmed the stability of Pd-CeOx/α-Al2O3 catalysts. FTIR spectroscopy and chemisorption measurements confirmed the surface characteristics of fresh and used catalysts. CeOx-Pd/α-Al2O3 catalysts exhibited a surfa ce consistent with the absence of CH4 formation and promoted the formation of adsorbedbicarbonate species, potentially as intermediate reactions involving CO2 and surface hydroxyls.
Fil: Costilla, Ignacio Oscar. 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: Gigola, Carlos Eugenio. 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: Sanchez, Miguel Dario. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Física del Sur. Universidad Nacional del Sur. Departamento de Física. Instituto de Física del Sur; Argentina. Universidad Nacional del Sur. Departamento de Física; Argentina
description In this study the catalytic properties of low-loaded CeOx-Pd/α-Al2O3 and Pd-CeOx/α-Al2O3 catalysts for CO2 hydrogenation with and without CH4 at 873 K is investigated. This study is the first carried out on promoted low Pd loading catalyst at high temperature. The catalysts showed high activity for the RWGS reaction, meeting the CAMERE process requirements. The addition of ceria (0.8 - 5.3 wt%) significantly improved CO2 conversionand CO selectivity. Interestingly, the impregnation order of Ce and Pd did not affect the catalytic performance. CeOx-Pd/α-Al2O3 catalysts produced almost exclusively CO, while Pd-CeOx/α-Al2O3 achieved selectivities above 99 %. The reaction rate increased by about 5 times compared to Pd/α-Al2O3, depending on Ce content. Pd-CeOx/α-Al2O3 showed rate independence with the Ce loading, while CeOx-Pd/α-Al2O3 exhibited a maximum rate for 3 wt% of Ce. Long-term experiments confirmed the stability of Pd-CeOx/α-Al2O3 catalysts. FTIR spectroscopy and chemisorption measurements confirmed the surface characteristics of fresh and used catalysts. CeOx-Pd/α-Al2O3 catalysts exhibited a surfa ce consistent with the absence of CH4 formation and promoted the formation of adsorbedbicarbonate species, potentially as intermediate reactions involving CO2 and surface hydroxyls.
publishDate 2025
dc.date.none.fl_str_mv 2025-04
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/11336/289311
Costilla, Ignacio Oscar; Gigola, Carlos Eugenio; Sanchez, Miguel Dario; On the activity of low-loaded CeOx-Pd/alpha-Al2O3 and Pd-CeOx/alpha-Al2O3 catalysts for CO2 hydrogenation; Planta Piloto de Ingeniería Química; Latin American Applied Research; 55; 2; 4-2025; 185-192
0327-0793
1851-8796
CONICET Digital
CONICET
url http://hdl.handle.net/11336/289311
identifier_str_mv Costilla, Ignacio Oscar; Gigola, Carlos Eugenio; Sanchez, Miguel Dario; On the activity of low-loaded CeOx-Pd/alpha-Al2O3 and Pd-CeOx/alpha-Al2O3 catalysts for CO2 hydrogenation; Planta Piloto de Ingeniería Química; Latin American Applied Research; 55; 2; 4-2025; 185-192
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/https://laar.plapiqui.edu.ar/OJS/index.php/laar/article/view/3498
info:eu-repo/semantics/altIdentifier/doi/10.52292/j.laar.2025.3498
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv 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
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