Surface characterization of Co,K/La2O3 catalysts used for the catalytic combustion of diesel soot

Autores
Moggia, J. M.; Milt, Viviana Guadalupe; Ulla, Maria Alicia del H.; Cornaglia, Laura Maria
Año de publicación
2003
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Catalysts of Co,K/La2O3 have been prepared by wet impregnation. The samples have been calcined at 400 ◦C and 700 ◦C and have been characterized for phase composition using x-ray diffraction and Fourier transform infrared spectroscopy. The XPS analysis of the samples has been obtained by examination of the O 1s, K 2p, C 1s and La 3d spectral regions. The XPS data are discussed with respect to the calcination temperatures and the soot combustion performed in the spectrometer reaction chamber. Analysis of  the XPS data indicates considerable carbonation of the surfaces of all samples, even after burning the soot. The K/La2O3 solid presents the highest content of surface carbonated species, showing the highest catalytic activity for soot combustion. Interaction of the catalysts with CO2 is studied by temperatureprogrammed desorption and microbalance experiments. Kinetic studies and surface characterization of the  potassium-containing samples suggest that an appropriate surface potassium concentration is necessary for a synergetic action between potassium and lanthanum. In the cobalt-containing catalysts calcined at 700 ◦C, an increase is observed in the concentration of the outer-layer perovskite species when the potassium content increases, following the same tendency observed in the bulk. Such LaCoO3 species would limit the reaction of lanthanum with CO2.
Fil: Moggia, J. M.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
Fil: Milt, Viviana Guadalupe. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; 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 ; Argentina
Fil: Cornaglia, Laura Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
Materia
Co,K/La2o3 Catalysts
Xps Analysis
Soot Combustion
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:11336/40229
Acceder
id CONICETDig_09d85069ea017fb04dbc331f9a652670
oai_identifier_str oai:ri.conicet.gov.ar:11336/40229
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Surface characterization of Co,K/La2O3 catalysts used for the catalytic combustion of diesel sootMoggia, J. M.Milt, Viviana GuadalupeUlla, Maria Alicia del H.Cornaglia, Laura MariaCo,K/La2o3 CatalystsXps AnalysisSoot Combustionhttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2Catalysts of Co,K/La2O3 have been prepared by wet impregnation. The samples have been calcined at 400 ◦C and 700 ◦C and have been characterized for phase composition using x-ray diffraction and Fourier transform infrared spectroscopy. The XPS analysis of the samples has been obtained by examination of the O 1s, K 2p, C 1s and La 3d spectral regions. The XPS data are discussed with respect to the calcination temperatures and the soot combustion performed in the spectrometer reaction chamber. Analysis of  the XPS data indicates considerable carbonation of the surfaces of all samples, even after burning the soot. The K/La2O3 solid presents the highest content of surface carbonated species, showing the highest catalytic activity for soot combustion. Interaction of the catalysts with CO2 is studied by temperatureprogrammed desorption and microbalance experiments. Kinetic studies and surface characterization of the  potassium-containing samples suggest that an appropriate surface potassium concentration is necessary for a synergetic action between potassium and lanthanum. In the cobalt-containing catalysts calcined at 700 ◦C, an increase is observed in the concentration of the outer-layer perovskite species when the potassium content increases, following the same tendency observed in the bulk. Such LaCoO3 species would limit the reaction of lanthanum with CO2.Fil: Moggia, J. M.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; ArgentinaFil: Milt, Viviana Guadalupe. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; 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 ; ArgentinaFil: Cornaglia, Laura Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; ArgentinaJohn Wiley & Sons Ltd2003-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/40229Moggia, J. M.; Milt, Viviana Guadalupe; Ulla, Maria Alicia del H.; Cornaglia, Laura Maria; Surface characterization of Co,K/La2O3 catalysts used for the catalytic combustion of diesel soot; John Wiley & Sons Ltd; Surface and Interface Analysis; 35; 2; 1-2003; 216-2250142-2421CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1002/sia.1480info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1002/sia.1480info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T12:02:21Zoai:ri.conicet.gov.ar:11336/40229instacron: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:34982025-10-22 12:02:21.486CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Surface characterization of Co,K/La2O3 catalysts used for the catalytic combustion of diesel soot
title Surface characterization of Co,K/La2O3 catalysts used for the catalytic combustion of diesel soot
spellingShingle Surface characterization of Co,K/La2O3 catalysts used for the catalytic combustion of diesel soot
Moggia, J. M.
Co,K/La2o3 Catalysts
Xps Analysis
Soot Combustion
title_short Surface characterization of Co,K/La2O3 catalysts used for the catalytic combustion of diesel soot
title_full Surface characterization of Co,K/La2O3 catalysts used for the catalytic combustion of diesel soot
title_fullStr Surface characterization of Co,K/La2O3 catalysts used for the catalytic combustion of diesel soot
title_full_unstemmed Surface characterization of Co,K/La2O3 catalysts used for the catalytic combustion of diesel soot
title_sort Surface characterization of Co,K/La2O3 catalysts used for the catalytic combustion of diesel soot
dc.creator.none.fl_str_mv Moggia, J. M.
Milt, Viviana Guadalupe
Ulla, Maria Alicia del H.
Cornaglia, Laura Maria
author Moggia, J. M.
author_facet Moggia, J. M.
Milt, Viviana Guadalupe
Ulla, Maria Alicia del H.
Cornaglia, Laura Maria
author_role author
author2 Milt, Viviana Guadalupe
Ulla, Maria Alicia del H.
Cornaglia, Laura Maria
author2_role author
author
author
dc.subject.none.fl_str_mv Co,K/La2o3 Catalysts
Xps Analysis
Soot Combustion
topic Co,K/La2o3 Catalysts
Xps Analysis
Soot Combustion
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv Catalysts of Co,K/La2O3 have been prepared by wet impregnation. The samples have been calcined at 400 ◦C and 700 ◦C and have been characterized for phase composition using x-ray diffraction and Fourier transform infrared spectroscopy. The XPS analysis of the samples has been obtained by examination of the O 1s, K 2p, C 1s and La 3d spectral regions. The XPS data are discussed with respect to the calcination temperatures and the soot combustion performed in the spectrometer reaction chamber. Analysis of  the XPS data indicates considerable carbonation of the surfaces of all samples, even after burning the soot. The K/La2O3 solid presents the highest content of surface carbonated species, showing the highest catalytic activity for soot combustion. Interaction of the catalysts with CO2 is studied by temperatureprogrammed desorption and microbalance experiments. Kinetic studies and surface characterization of the  potassium-containing samples suggest that an appropriate surface potassium concentration is necessary for a synergetic action between potassium and lanthanum. In the cobalt-containing catalysts calcined at 700 ◦C, an increase is observed in the concentration of the outer-layer perovskite species when the potassium content increases, following the same tendency observed in the bulk. Such LaCoO3 species would limit the reaction of lanthanum with CO2.
Fil: Moggia, J. M.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
Fil: Milt, Viviana Guadalupe. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; 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 ; Argentina
Fil: Cornaglia, Laura Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
description Catalysts of Co,K/La2O3 have been prepared by wet impregnation. The samples have been calcined at 400 ◦C and 700 ◦C and have been characterized for phase composition using x-ray diffraction and Fourier transform infrared spectroscopy. The XPS analysis of the samples has been obtained by examination of the O 1s, K 2p, C 1s and La 3d spectral regions. The XPS data are discussed with respect to the calcination temperatures and the soot combustion performed in the spectrometer reaction chamber. Analysis of  the XPS data indicates considerable carbonation of the surfaces of all samples, even after burning the soot. The K/La2O3 solid presents the highest content of surface carbonated species, showing the highest catalytic activity for soot combustion. Interaction of the catalysts with CO2 is studied by temperatureprogrammed desorption and microbalance experiments. Kinetic studies and surface characterization of the  potassium-containing samples suggest that an appropriate surface potassium concentration is necessary for a synergetic action between potassium and lanthanum. In the cobalt-containing catalysts calcined at 700 ◦C, an increase is observed in the concentration of the outer-layer perovskite species when the potassium content increases, following the same tendency observed in the bulk. Such LaCoO3 species would limit the reaction of lanthanum with CO2.
publishDate 2003
dc.date.none.fl_str_mv 2003-01
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/11336/40229
Moggia, J. M.; Milt, Viviana Guadalupe; Ulla, Maria Alicia del H.; Cornaglia, Laura Maria; Surface characterization of Co,K/La2O3 catalysts used for the catalytic combustion of diesel soot; John Wiley & Sons Ltd; Surface and Interface Analysis; 35; 2; 1-2003; 216-225
0142-2421
CONICET Digital
CONICET
url http://hdl.handle.net/11336/40229
identifier_str_mv Moggia, J. M.; Milt, Viviana Guadalupe; Ulla, Maria Alicia del H.; Cornaglia, Laura Maria; Surface characterization of Co,K/La2O3 catalysts used for the catalytic combustion of diesel soot; John Wiley & Sons Ltd; Surface and Interface Analysis; 35; 2; 1-2003; 216-225
0142-2421
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1002/sia.1480
info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1002/sia.1480
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
application/pdf
dc.publisher.none.fl_str_mv John Wiley & Sons Ltd
publisher.none.fl_str_mv John Wiley & Sons Ltd
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_ 1846782359278452736
score 12.982451

Publicaciones similares