Catalytic oxidation of diesel soot: New characterization and kinetic evidence related to the reaction mechanism on K/CeO2 catalyst

Autores
Gross, Martin Sebastian; Ulla, Maria Alicia del H.; Querini, Carlos Alberto
Año de publicación
2009
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The oxidation of diesel soot using K/CeO2 catalysts is studied in this paper. The reaction system involved in the catalytic oxidation of soot is quite complex; therefore, the study of reaction mechanisms is particularly difficult to address and, consequently, there are few publications related to this topic. In this work, kinetic tests providing new information on this mechanism are shown. Using temperature-programmed oxidation experiments designed in order to get the combustion of only a fraction of the soot, it was possible to observe transient phenomena that demonstrate that the soot oxidation reaction involves many steps and intermediate species. Fourier transform infrared spectroscopy (FTIR), SEM and energy-dispersive X-ray analysis (EDX) characterization results obtained before and after partial burning experiments of soot, also provided information on catalysts morphological changes during the reaction. It was found that peroxide and superoxides associated to CeO2 are present on the catalyst during soot oxidation. On the other hand, carbonates are formed on the catalyst surface reaching a pseudo-steady-state. The formation of peroxides and superoxides and its surface diffusion explained the transient behavior observed during temperature-programmed experiments designed to burn a fraction of soot under isothermal condition.
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
Kinetics
Mechanism
Cerium Oxide Catalysts
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:11336/57165
Acceder
id CONICETDig_190cac3b330e842d8b9c1f280e7ca45b
oai_identifier_str oai:ri.conicet.gov.ar:11336/57165
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Catalytic oxidation of diesel soot: New characterization and kinetic evidence related to the reaction mechanism on K/CeO2 catalystGross, Martin SebastianUlla, Maria Alicia del H.Querini, Carlos AlbertoDiesel SootKineticsMechanismCerium Oxide Catalystshttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2The oxidation of diesel soot using K/CeO2 catalysts is studied in this paper. The reaction system involved in the catalytic oxidation of soot is quite complex; therefore, the study of reaction mechanisms is particularly difficult to address and, consequently, there are few publications related to this topic. In this work, kinetic tests providing new information on this mechanism are shown. Using temperature-programmed oxidation experiments designed in order to get the combustion of only a fraction of the soot, it was possible to observe transient phenomena that demonstrate that the soot oxidation reaction involves many steps and intermediate species. Fourier transform infrared spectroscopy (FTIR), SEM and energy-dispersive X-ray analysis (EDX) characterization results obtained before and after partial burning experiments of soot, also provided information on catalysts morphological changes during the reaction. It was found that peroxide and superoxides associated to CeO2 are present on the catalyst during soot oxidation. On the other hand, carbonates are formed on the catalyst surface reaching a pseudo-steady-state. The formation of peroxides and superoxides and its surface diffusion explained the transient behavior observed during temperature-programmed experiments designed to burn a fraction of soot under isothermal condition.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 Science2009-05info: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/11336/57165Gross, Martin Sebastian; Ulla, Maria Alicia del H.; Querini, Carlos Alberto; Catalytic oxidation of diesel soot: New characterization and kinetic evidence related to the reaction mechanism on K/CeO2 catalyst; Elsevier Science; Applied Catalysis A: General; 360; 1; 5-2009; 81-880926-860XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.apcata.2009.03.011info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-10T13:00:08Zoai:ri.conicet.gov.ar:11336/57165instacron: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:34982025-09-10 13:00:08.521CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Catalytic oxidation of diesel soot: New characterization and kinetic evidence related to the reaction mechanism on K/CeO2 catalyst
title Catalytic oxidation of diesel soot: New characterization and kinetic evidence related to the reaction mechanism on K/CeO2 catalyst
spellingShingle Catalytic oxidation of diesel soot: New characterization and kinetic evidence related to the reaction mechanism on K/CeO2 catalyst
Gross, Martin Sebastian
Diesel Soot
Kinetics
Mechanism
Cerium Oxide Catalysts
title_short Catalytic oxidation of diesel soot: New characterization and kinetic evidence related to the reaction mechanism on K/CeO2 catalyst
title_full Catalytic oxidation of diesel soot: New characterization and kinetic evidence related to the reaction mechanism on K/CeO2 catalyst
title_fullStr Catalytic oxidation of diesel soot: New characterization and kinetic evidence related to the reaction mechanism on K/CeO2 catalyst
title_full_unstemmed Catalytic oxidation of diesel soot: New characterization and kinetic evidence related to the reaction mechanism on K/CeO2 catalyst
title_sort Catalytic oxidation of diesel soot: New characterization and kinetic evidence related to the reaction mechanism on K/CeO2 catalyst
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
Kinetics
Mechanism
Cerium Oxide Catalysts
topic Diesel Soot
Kinetics
Mechanism
Cerium Oxide Catalysts
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv The oxidation of diesel soot using K/CeO2 catalysts is studied in this paper. The reaction system involved in the catalytic oxidation of soot is quite complex; therefore, the study of reaction mechanisms is particularly difficult to address and, consequently, there are few publications related to this topic. In this work, kinetic tests providing new information on this mechanism are shown. Using temperature-programmed oxidation experiments designed in order to get the combustion of only a fraction of the soot, it was possible to observe transient phenomena that demonstrate that the soot oxidation reaction involves many steps and intermediate species. Fourier transform infrared spectroscopy (FTIR), SEM and energy-dispersive X-ray analysis (EDX) characterization results obtained before and after partial burning experiments of soot, also provided information on catalysts morphological changes during the reaction. It was found that peroxide and superoxides associated to CeO2 are present on the catalyst during soot oxidation. On the other hand, carbonates are formed on the catalyst surface reaching a pseudo-steady-state. The formation of peroxides and superoxides and its surface diffusion explained the transient behavior observed during temperature-programmed experiments designed to burn a fraction of soot under isothermal condition.
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 The oxidation of diesel soot using K/CeO2 catalysts is studied in this paper. The reaction system involved in the catalytic oxidation of soot is quite complex; therefore, the study of reaction mechanisms is particularly difficult to address and, consequently, there are few publications related to this topic. In this work, kinetic tests providing new information on this mechanism are shown. Using temperature-programmed oxidation experiments designed in order to get the combustion of only a fraction of the soot, it was possible to observe transient phenomena that demonstrate that the soot oxidation reaction involves many steps and intermediate species. Fourier transform infrared spectroscopy (FTIR), SEM and energy-dispersive X-ray analysis (EDX) characterization results obtained before and after partial burning experiments of soot, also provided information on catalysts morphological changes during the reaction. It was found that peroxide and superoxides associated to CeO2 are present on the catalyst during soot oxidation. On the other hand, carbonates are formed on the catalyst surface reaching a pseudo-steady-state. The formation of peroxides and superoxides and its surface diffusion explained the transient behavior observed during temperature-programmed experiments designed to burn a fraction of soot under isothermal condition.
publishDate 2009
dc.date.none.fl_str_mv 2009-05
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/11336/57165
Gross, Martin Sebastian; Ulla, Maria Alicia del H.; Querini, Carlos Alberto; Catalytic oxidation of diesel soot: New characterization and kinetic evidence related to the reaction mechanism on K/CeO2 catalyst; Elsevier Science; Applied Catalysis A: General; 360; 1; 5-2009; 81-88
0926-860X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/57165
identifier_str_mv Gross, Martin Sebastian; Ulla, Maria Alicia del H.; Querini, Carlos Alberto; Catalytic oxidation of diesel soot: New characterization and kinetic evidence related to the reaction mechanism on K/CeO2 catalyst; Elsevier Science; Applied Catalysis A: General; 360; 1; 5-2009; 81-88
0926-860X
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.apcata.2009.03.011
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_ 1842979861189099520
score 12.993085

Publicaciones similares