Deoxygenation of m-cresol: deactivation and regeneration of Pt/γ-Al2O3 Catalysts

Autores
Zanuttini, María Soledad; Peralta, María Ariela; Querini, Carlos Alberto
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Pt/Al2O3 catalysts were used to deoxygenate m-cresol, which was used as a bio-oil model compound. The catalystswere characterized by XRD, TEM, XPS, hydrogen chemisorption, and BET surface analyses. The coke deposits on spent catalystswere analyzed by TPO. In this work, the catalysts deactivation and regeneration were addressed. Deactivation was caused bycarbonaceous deposits formed mainly by cresol condensation products, in a parallel-type coke formation mechanism. Theamount of carbon formed on the catalyst strongly depends on the metal/acid functions ratio. The gas phase reaction was carriedout in a fixed bed reactor in the presence of H2 at 300 °C and atmospheric pressure. The regeneration by coke removal usinghydrogen or air was addressed. It was found that treatments in air at mild temperature led to the recovery of the catalytic activity,while the effectiveness of the treatment with H2 strongly depends on the temperature, not being possible to recover the activity at400 and 500 °C, while at 450 °C the catalyst was regenerated. This is because at the higher temperature, the coke left on thesupport had higher toxicity. The influence of platinum loading on activity and selectivity was also studied, and it was concludedthat the selectivity to the desired deoxygenated product can be regulated by changing the metal content on the catalyst. Themetal/acid sites ratio plays a key role in the coke deposition rate.
Fil: Zanuttini, María Soledad. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
Fil: Peralta, María Ariela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
Fil: Querini, Carlos Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
Materia
M-Cresol
Deoxygenation
Platinum
Deactivation
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:11336/34102
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/34102
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Deoxygenation of m-cresol: deactivation and regeneration of Pt/γ-Al2O3 CatalystsZanuttini, María SoledadPeralta, María ArielaQuerini, Carlos AlbertoM-CresolDeoxygenationPlatinumDeactivationhttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2Pt/Al2O3 catalysts were used to deoxygenate m-cresol, which was used as a bio-oil model compound. The catalystswere characterized by XRD, TEM, XPS, hydrogen chemisorption, and BET surface analyses. The coke deposits on spent catalystswere analyzed by TPO. In this work, the catalysts deactivation and regeneration were addressed. Deactivation was caused bycarbonaceous deposits formed mainly by cresol condensation products, in a parallel-type coke formation mechanism. Theamount of carbon formed on the catalyst strongly depends on the metal/acid functions ratio. The gas phase reaction was carriedout in a fixed bed reactor in the presence of H2 at 300 °C and atmospheric pressure. The regeneration by coke removal usinghydrogen or air was addressed. It was found that treatments in air at mild temperature led to the recovery of the catalytic activity,while the effectiveness of the treatment with H2 strongly depends on the temperature, not being possible to recover the activity at400 and 500 °C, while at 450 °C the catalyst was regenerated. This is because at the higher temperature, the coke left on thesupport had higher toxicity. The influence of platinum loading on activity and selectivity was also studied, and it was concludedthat the selectivity to the desired deoxygenated product can be regulated by changing the metal content on the catalyst. Themetal/acid sites ratio plays a key role in the coke deposition rate.Fil: Zanuttini, María Soledad. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; ArgentinaFil: Peralta, María Ariela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; ArgentinaFil: Querini, Carlos Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; ArgentinaAmerican Chemical Society2015-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/34102Zanuttini, María Soledad; Peralta, María Ariela; Querini, Carlos Alberto; Deoxygenation of m-cresol: deactivation and regeneration of Pt/γ-Al2O3 Catalysts; American Chemical Society; Industrial & Engineering Chemical Research; 54; 18; 4-2015; 4929-49390888-5885CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1021/acs.iecr.5b00305info:eu-repo/semantics/altIdentifier/url/http://pubs.acs.org/doi/10.1021/acs.iecr.5b00305info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:16:29Zoai:ri.conicet.gov.ar:11336/34102instacron: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:34982025-09-29 10:16:30.041CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Deoxygenation of m-cresol: deactivation and regeneration of Pt/γ-Al2O3 Catalysts
title Deoxygenation of m-cresol: deactivation and regeneration of Pt/γ-Al2O3 Catalysts
spellingShingle Deoxygenation of m-cresol: deactivation and regeneration of Pt/γ-Al2O3 Catalysts
Zanuttini, María Soledad
M-Cresol
Deoxygenation
Platinum
Deactivation
title_short Deoxygenation of m-cresol: deactivation and regeneration of Pt/γ-Al2O3 Catalysts
title_full Deoxygenation of m-cresol: deactivation and regeneration of Pt/γ-Al2O3 Catalysts
title_fullStr Deoxygenation of m-cresol: deactivation and regeneration of Pt/γ-Al2O3 Catalysts
title_full_unstemmed Deoxygenation of m-cresol: deactivation and regeneration of Pt/γ-Al2O3 Catalysts
title_sort Deoxygenation of m-cresol: deactivation and regeneration of Pt/γ-Al2O3 Catalysts
dc.creator.none.fl_str_mv Zanuttini, María Soledad
Peralta, María Ariela
Querini, Carlos Alberto
author Zanuttini, María Soledad
author_facet Zanuttini, María Soledad
Peralta, María Ariela
Querini, Carlos Alberto
author_role author
author2 Peralta, María Ariela
Querini, Carlos Alberto
author2_role author
author
dc.subject.none.fl_str_mv M-Cresol
Deoxygenation
Platinum
Deactivation
topic M-Cresol
Deoxygenation
Platinum
Deactivation
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv Pt/Al2O3 catalysts were used to deoxygenate m-cresol, which was used as a bio-oil model compound. The catalystswere characterized by XRD, TEM, XPS, hydrogen chemisorption, and BET surface analyses. The coke deposits on spent catalystswere analyzed by TPO. In this work, the catalysts deactivation and regeneration were addressed. Deactivation was caused bycarbonaceous deposits formed mainly by cresol condensation products, in a parallel-type coke formation mechanism. Theamount of carbon formed on the catalyst strongly depends on the metal/acid functions ratio. The gas phase reaction was carriedout in a fixed bed reactor in the presence of H2 at 300 °C and atmospheric pressure. The regeneration by coke removal usinghydrogen or air was addressed. It was found that treatments in air at mild temperature led to the recovery of the catalytic activity,while the effectiveness of the treatment with H2 strongly depends on the temperature, not being possible to recover the activity at400 and 500 °C, while at 450 °C the catalyst was regenerated. This is because at the higher temperature, the coke left on thesupport had higher toxicity. The influence of platinum loading on activity and selectivity was also studied, and it was concludedthat the selectivity to the desired deoxygenated product can be regulated by changing the metal content on the catalyst. Themetal/acid sites ratio plays a key role in the coke deposition rate.
Fil: Zanuttini, María Soledad. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
Fil: Peralta, María Ariela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
Fil: Querini, Carlos Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
description Pt/Al2O3 catalysts were used to deoxygenate m-cresol, which was used as a bio-oil model compound. The catalystswere characterized by XRD, TEM, XPS, hydrogen chemisorption, and BET surface analyses. The coke deposits on spent catalystswere analyzed by TPO. In this work, the catalysts deactivation and regeneration were addressed. Deactivation was caused bycarbonaceous deposits formed mainly by cresol condensation products, in a parallel-type coke formation mechanism. Theamount of carbon formed on the catalyst strongly depends on the metal/acid functions ratio. The gas phase reaction was carriedout in a fixed bed reactor in the presence of H2 at 300 °C and atmospheric pressure. The regeneration by coke removal usinghydrogen or air was addressed. It was found that treatments in air at mild temperature led to the recovery of the catalytic activity,while the effectiveness of the treatment with H2 strongly depends on the temperature, not being possible to recover the activity at400 and 500 °C, while at 450 °C the catalyst was regenerated. This is because at the higher temperature, the coke left on thesupport had higher toxicity. The influence of platinum loading on activity and selectivity was also studied, and it was concludedthat the selectivity to the desired deoxygenated product can be regulated by changing the metal content on the catalyst. Themetal/acid sites ratio plays a key role in the coke deposition rate.
publishDate 2015
dc.date.none.fl_str_mv 2015-04
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/11336/34102
Zanuttini, María Soledad; Peralta, María Ariela; Querini, Carlos Alberto; Deoxygenation of m-cresol: deactivation and regeneration of Pt/γ-Al2O3 Catalysts; American Chemical Society; Industrial & Engineering Chemical Research; 54; 18; 4-2015; 4929-4939
0888-5885
CONICET Digital
CONICET
url http://hdl.handle.net/11336/34102
identifier_str_mv Zanuttini, María Soledad; Peralta, María Ariela; Querini, Carlos Alberto; Deoxygenation of m-cresol: deactivation and regeneration of Pt/γ-Al2O3 Catalysts; American Chemical Society; Industrial & Engineering Chemical Research; 54; 18; 4-2015; 4929-4939
0888-5885
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1021/acs.iecr.5b00305
info:eu-repo/semantics/altIdentifier/url/http://pubs.acs.org/doi/10.1021/acs.iecr.5b00305
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
dc.publisher.none.fl_str_mv American Chemical Society
publisher.none.fl_str_mv American Chemical Society
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 13.070432

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