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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/40229
Ver los metadatos del registro completo
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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 Técnicas2025-09-29T10:29:50Zoai: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:34982025-09-29 10:29:50.736CONICET 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 |
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1844614305719255040 |
score |
13.070432 |