Effect of structural ordering of the carbon support on the behavior of Pd catalysts in aqueous-phase hydrodechlorination

Catalysts consisting of Pd supported on virgin and heat-treated carbon blacks (homemade and commercial), graphites (natural and synthetic) and commercial carbon nanofibers were prepared and tested in the aqueous phase hydrodechlorinaton (HDC) of 4-chlorophenol (4-CP) under near ambient conditions (3...

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Autores: Baeza Herrera, José Alberto, Calvo Hernández, Luisa, Alonso Morales, Noelia, Heras Muñoz, Francisco, Eser, Semih, Rodríguez Jiménez, Juan José, Gilarranz Redondo, Miguel Ángel
Tipo de recurso: artículo
Fecha de publicación:2017
País:España
Institución:Universidad Autónoma de Madrid
Repositorio:Biblos-e Archivo. Repositorio Institucional de la UAM
Idioma:inglés
OAI Identifier:oai:repositorio.uam.es:10486/684668
Acceso en línea:http://hdl.handle.net/10486/684668
https://dx.doi.org/10.1016/j.ces.2017.11.015
Access Level:acceso abierto
Palabra clave:Graphitized support
Carbon black
Hydrodechlorination
4-chlorophenol
Física
Química
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spelling Effect of structural ordering of the carbon support on the behavior of Pd catalysts in aqueous-phase hydrodechlorinationBaeza Herrera, José AlbertoCalvo Hernández, LuisaAlonso Morales, NoeliaHeras Muñoz, FranciscoEser, SemihRodríguez Jiménez, Juan JoséGilarranz Redondo, Miguel ÁngelGraphitized supportCarbon blackHydrodechlorination4-chlorophenolFísicaQuímicaCatalysts consisting of Pd supported on virgin and heat-treated carbon blacks (homemade and commercial), graphites (natural and synthetic) and commercial carbon nanofibers were prepared and tested in the aqueous phase hydrodechlorinaton (HDC) of 4-chlorophenol (4-CP) under near ambient conditions (30 °C, 1 atm) in order to explore the effect of the support on the catalytic behavior. The homemade graphitized supports were prepared from commercial carbon black (CB) and from a carbon black-like material (CBPE) obtained from pyrolysis of low-density polyethylene. All the catalysts prepared yielded complete 4-CP conversion, although a wide range of activity was observed (10.7–173.5 mmol gPd−1 min−1). The graphitized carbon black provided the most active catalysts, showing Pd nanoparticles around 3 nm in size and a well-balanced contribution of Pd species (Pdn+/Pd0 = 0.9). Substantial differences of activity were found between the graphitized and not graphitized supports, even for catalysts with similar Pd nanoparticle size. The higher activity of the catalysts with graphitized supports can be partly associated to a more balanced initial Pdn+ to Pd0 ratio. Moreover, higher selectivity to hydrogenation products (cyclohexanone) was also achieved with those catalysts due to a higher contribution of the Pd0 speciesThe authors greatly appreciate financial support from the Spanish MINECO (CTQ2012-32821)Elsevier LtdDepartamento de Ingeniería QuímicaFacultad de CienciasUAM. Departamento de Ingeniería Química20172017-11-10research articlehttp://purl.org/coar/resource_type/c_2df8fbb1AMhttp://purl.org/coar/version/c_ab4af688f83e57aainfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10486/684668https://dx.doi.org/10.1016/j.ces.2017.11.015reponame:Biblos-e Archivo. Repositorio Institucional de la UAMinstname:Universidad Autónoma de MadridInglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:repositorio.uam.es:10486/6846682026-06-23T12:46:27Z
dc.title.none.fl_str_mv Effect of structural ordering of the carbon support on the behavior of Pd catalysts in aqueous-phase hydrodechlorination
title Effect of structural ordering of the carbon support on the behavior of Pd catalysts in aqueous-phase hydrodechlorination
spellingShingle Effect of structural ordering of the carbon support on the behavior of Pd catalysts in aqueous-phase hydrodechlorination
Baeza Herrera, José Alberto
Graphitized support
Carbon black
Hydrodechlorination
4-chlorophenol
Física
Química
title_short Effect of structural ordering of the carbon support on the behavior of Pd catalysts in aqueous-phase hydrodechlorination
title_full Effect of structural ordering of the carbon support on the behavior of Pd catalysts in aqueous-phase hydrodechlorination
title_fullStr Effect of structural ordering of the carbon support on the behavior of Pd catalysts in aqueous-phase hydrodechlorination
title_full_unstemmed Effect of structural ordering of the carbon support on the behavior of Pd catalysts in aqueous-phase hydrodechlorination
title_sort Effect of structural ordering of the carbon support on the behavior of Pd catalysts in aqueous-phase hydrodechlorination
dc.creator.none.fl_str_mv Baeza Herrera, José Alberto
Calvo Hernández, Luisa
Alonso Morales, Noelia
Heras Muñoz, Francisco
Eser, Semih
Rodríguez Jiménez, Juan José
Gilarranz Redondo, Miguel Ángel
author Baeza Herrera, José Alberto
author_facet Baeza Herrera, José Alberto
Calvo Hernández, Luisa
Alonso Morales, Noelia
Heras Muñoz, Francisco
Eser, Semih
Rodríguez Jiménez, Juan José
Gilarranz Redondo, Miguel Ángel
author_role author
author2 Calvo Hernández, Luisa
Alonso Morales, Noelia
Heras Muñoz, Francisco
Eser, Semih
Rodríguez Jiménez, Juan José
Gilarranz Redondo, Miguel Ángel
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Departamento de Ingeniería Química
Facultad de Ciencias
UAM. Departamento de Ingeniería Química
dc.subject.none.fl_str_mv Graphitized support
Carbon black
Hydrodechlorination
4-chlorophenol
Física
Química
topic Graphitized support
Carbon black
Hydrodechlorination
4-chlorophenol
Física
Química
description Catalysts consisting of Pd supported on virgin and heat-treated carbon blacks (homemade and commercial), graphites (natural and synthetic) and commercial carbon nanofibers were prepared and tested in the aqueous phase hydrodechlorinaton (HDC) of 4-chlorophenol (4-CP) under near ambient conditions (30 °C, 1 atm) in order to explore the effect of the support on the catalytic behavior. The homemade graphitized supports were prepared from commercial carbon black (CB) and from a carbon black-like material (CBPE) obtained from pyrolysis of low-density polyethylene. All the catalysts prepared yielded complete 4-CP conversion, although a wide range of activity was observed (10.7–173.5 mmol gPd−1 min−1). The graphitized carbon black provided the most active catalysts, showing Pd nanoparticles around 3 nm in size and a well-balanced contribution of Pd species (Pdn+/Pd0 = 0.9). Substantial differences of activity were found between the graphitized and not graphitized supports, even for catalysts with similar Pd nanoparticle size. The higher activity of the catalysts with graphitized supports can be partly associated to a more balanced initial Pdn+ to Pd0 ratio. Moreover, higher selectivity to hydrogenation products (cyclohexanone) was also achieved with those catalysts due to a higher contribution of the Pd0 species
publishDate 2017
dc.date.none.fl_str_mv 2017
2017-11-10
dc.type.none.fl_str_mv research article
http://purl.org/coar/resource_type/c_2df8fbb1
AM
http://purl.org/coar/version/c_ab4af688f83e57aa
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10486/684668
https://dx.doi.org/10.1016/j.ces.2017.11.015
url http://hdl.handle.net/10486/684668
https://dx.doi.org/10.1016/j.ces.2017.11.015
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier Ltd
publisher.none.fl_str_mv Elsevier Ltd
dc.source.none.fl_str_mv reponame:Biblos-e Archivo. Repositorio Institucional de la UAM
instname:Universidad Autónoma de Madrid
instname_str Universidad Autónoma de Madrid
reponame_str Biblos-e Archivo. Repositorio Institucional de la UAM
collection Biblos-e Archivo. Repositorio Institucional de la UAM
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,301603

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