Diesel particulate matter combustion with CeO2 as catalyst. Part I: System characterization and reaction mechanism

Autores
Gross, Martin Sebastian; Ulla, Maria Alicia del H.; Querini, Carlos Alberto
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In this work, a reaction mechanism for the catalytic combustion of diesel soot on cerium oxide is proposed.Kinetic results and catalyst characterization by Fourier-transformed Infra-Red spectroscopy (FTIR), X-ray Photoelectron Spectroscopy (XPS), Scanning Electron Microscopy (SEM), X-ray Diffraction Spectroscopy (XRD), and high frequency CO2 pulses are used to obtain such mechanism. Temperature-programmedoxidation experiments carried out up to intermediate temperatures made it possible to detect a transient kinetic response, in which a maximum in reaction rate at constant temperature was observed. This behavior is explained taking into account the amount of peroxides formed on the ceria surface. As the calcination temperature increases (from 400 to 800C), the amount of cerium superoxide and peroxide increases, thus accelerating the soot combustion reaction. These compounds were detected by FTIR. A higher total oxygen concentration on the ceria surface was detected by XPS on the catalyst calcined at high temperature. Carbon dioxide is not adsorbed on this support. The proposed reaction mechanism involves the formation of superoxides and peroxides. The latter are the active species that react with soot. These steps are strongly affected by temperature, being it possible to explain the kinetic results with this mechanism.
Fil: Gross, Martin Sebastian. 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: Ulla, Maria Alicia del H.. 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: Querini, Carlos Alberto. 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
Materia
DIESEL SOOT
OXIDATION KINETIC
CERIUM OXIDE
REACTION MECHANISM
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:11336/268913
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/268913
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Diesel particulate matter combustion with CeO2 as catalyst. Part I: System characterization and reaction mechanismGross, Martin SebastianUlla, Maria Alicia del H.Querini, Carlos AlbertoDIESEL SOOTOXIDATION KINETICCERIUM OXIDEREACTION MECHANISMhttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2In this work, a reaction mechanism for the catalytic combustion of diesel soot on cerium oxide is proposed.Kinetic results and catalyst characterization by Fourier-transformed Infra-Red spectroscopy (FTIR), X-ray Photoelectron Spectroscopy (XPS), Scanning Electron Microscopy (SEM), X-ray Diffraction Spectroscopy (XRD), and high frequency CO2 pulses are used to obtain such mechanism. Temperature-programmedoxidation experiments carried out up to intermediate temperatures made it possible to detect a transient kinetic response, in which a maximum in reaction rate at constant temperature was observed. This behavior is explained taking into account the amount of peroxides formed on the ceria surface. As the calcination temperature increases (from 400 to 800C), the amount of cerium superoxide and peroxide increases, thus accelerating the soot combustion reaction. These compounds were detected by FTIR. A higher total oxygen concentration on the ceria surface was detected by XPS on the catalyst calcined at high temperature. Carbon dioxide is not adsorbed on this support. The proposed reaction mechanism involves the formation of superoxides and peroxides. The latter are the active species that react with soot. These steps are strongly affected by temperature, being it possible to explain the kinetic results with this mechanism.Fil: Gross, Martin Sebastian. 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: Ulla, Maria Alicia del H.. 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: Querini, Carlos Alberto. 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"; ArgentinaElsevier Science2012-01info: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/11336/268913Gross, Martin Sebastian; Ulla, Maria Alicia del H.; Querini, Carlos Alberto; Diesel particulate matter combustion with CeO2 as catalyst. Part I: System characterization and reaction mechanism; Elsevier Science; Journal of Molecular Catalysis A: Chemical; 352; 1-2012; 86-941381-1169CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S1381116911004481?via%3Dihubinfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.molcata.2011.10.018info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:03:11Zoai:ri.conicet.gov.ar:11336/268913instacron: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 10:03:12.011CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Diesel particulate matter combustion with CeO2 as catalyst. Part I: System characterization and reaction mechanism
title Diesel particulate matter combustion with CeO2 as catalyst. Part I: System characterization and reaction mechanism
spellingShingle Diesel particulate matter combustion with CeO2 as catalyst. Part I: System characterization and reaction mechanism
Gross, Martin Sebastian
DIESEL SOOT
OXIDATION KINETIC
CERIUM OXIDE
REACTION MECHANISM
title_short Diesel particulate matter combustion with CeO2 as catalyst. Part I: System characterization and reaction mechanism
title_full Diesel particulate matter combustion with CeO2 as catalyst. Part I: System characterization and reaction mechanism
title_fullStr Diesel particulate matter combustion with CeO2 as catalyst. Part I: System characterization and reaction mechanism
title_full_unstemmed Diesel particulate matter combustion with CeO2 as catalyst. Part I: System characterization and reaction mechanism
title_sort Diesel particulate matter combustion with CeO2 as catalyst. Part I: System characterization and reaction mechanism
dc.creator.none.fl_str_mv Gross, Martin Sebastian
Ulla, Maria Alicia del H.
Querini, Carlos Alberto
author Gross, Martin Sebastian
author_facet Gross, Martin Sebastian
Ulla, Maria Alicia del H.
Querini, Carlos Alberto
author_role author
author2 Ulla, Maria Alicia del H.
Querini, Carlos Alberto
author2_role author
author
dc.subject.none.fl_str_mv DIESEL SOOT
OXIDATION KINETIC
CERIUM OXIDE
REACTION MECHANISM
topic DIESEL SOOT
OXIDATION KINETIC
CERIUM OXIDE
REACTION MECHANISM
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv In this work, a reaction mechanism for the catalytic combustion of diesel soot on cerium oxide is proposed.Kinetic results and catalyst characterization by Fourier-transformed Infra-Red spectroscopy (FTIR), X-ray Photoelectron Spectroscopy (XPS), Scanning Electron Microscopy (SEM), X-ray Diffraction Spectroscopy (XRD), and high frequency CO2 pulses are used to obtain such mechanism. Temperature-programmedoxidation experiments carried out up to intermediate temperatures made it possible to detect a transient kinetic response, in which a maximum in reaction rate at constant temperature was observed. This behavior is explained taking into account the amount of peroxides formed on the ceria surface. As the calcination temperature increases (from 400 to 800C), the amount of cerium superoxide and peroxide increases, thus accelerating the soot combustion reaction. These compounds were detected by FTIR. A higher total oxygen concentration on the ceria surface was detected by XPS on the catalyst calcined at high temperature. Carbon dioxide is not adsorbed on this support. The proposed reaction mechanism involves the formation of superoxides and peroxides. The latter are the active species that react with soot. These steps are strongly affected by temperature, being it possible to explain the kinetic results with this mechanism.
Fil: Gross, Martin Sebastian. 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: Ulla, Maria Alicia del H.. 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: Querini, Carlos Alberto. 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
description In this work, a reaction mechanism for the catalytic combustion of diesel soot on cerium oxide is proposed.Kinetic results and catalyst characterization by Fourier-transformed Infra-Red spectroscopy (FTIR), X-ray Photoelectron Spectroscopy (XPS), Scanning Electron Microscopy (SEM), X-ray Diffraction Spectroscopy (XRD), and high frequency CO2 pulses are used to obtain such mechanism. Temperature-programmedoxidation experiments carried out up to intermediate temperatures made it possible to detect a transient kinetic response, in which a maximum in reaction rate at constant temperature was observed. This behavior is explained taking into account the amount of peroxides formed on the ceria surface. As the calcination temperature increases (from 400 to 800C), the amount of cerium superoxide and peroxide increases, thus accelerating the soot combustion reaction. These compounds were detected by FTIR. A higher total oxygen concentration on the ceria surface was detected by XPS on the catalyst calcined at high temperature. Carbon dioxide is not adsorbed on this support. The proposed reaction mechanism involves the formation of superoxides and peroxides. The latter are the active species that react with soot. These steps are strongly affected by temperature, being it possible to explain the kinetic results with this mechanism.
publishDate 2012
dc.date.none.fl_str_mv 2012-01
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/11336/268913
Gross, Martin Sebastian; Ulla, Maria Alicia del H.; Querini, Carlos Alberto; Diesel particulate matter combustion with CeO2 as catalyst. Part I: System characterization and reaction mechanism; Elsevier Science; Journal of Molecular Catalysis A: Chemical; 352; 1-2012; 86-94
1381-1169
CONICET Digital
CONICET
url http://hdl.handle.net/11336/268913
identifier_str_mv Gross, Martin Sebastian; Ulla, Maria Alicia del H.; Querini, Carlos Alberto; Diesel particulate matter combustion with CeO2 as catalyst. Part I: System characterization and reaction mechanism; Elsevier Science; Journal of Molecular Catalysis A: Chemical; 352; 1-2012; 86-94
1381-1169
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://www.sciencedirect.com/science/article/pii/S1381116911004481?via%3Dihub
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.molcata.2011.10.018
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
publisher.none.fl_str_mv Elsevier Science
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 13.069144

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