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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/268913
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repository_id_str |
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network_name_str |
CONICET Digital (CONICET) |
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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 Técnicas2025-09-03T09:57:21Zoai: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:34982025-09-03 09:57:21.715CONICET 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 |
_version_ |
1842269457628528640 |
score |
13.13397 |