Steam resistant CoLa-mordenite catalysts for the SCR of NOx with CH4

Autores
Gutierrez, Laura Beatriz; Lombardo, Eduardo Agustin
Año de publicación
2009
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The stabilization of Co-mordenite catalysts through lanthanum exchange is reported here. The effect of exchange order and calcination conditions upon the reduction of NOx to N2 at 500 °C was tracked during 400 h on a stream containing NOx, CH4, O2 and 10% H2O. Both the fresh and used catalysts were characterized through TPR, Raman spectroscopy, FTIR spectroscopy using CO as probe molecule, and XPS. These techniques revealed that the CoLa-mordenite catalysts which were not affected by the severe hydrothermal treatment showed no sign of Co or La migration out of the exchange positions. Instead, those that rapidly deactivated showed the formation of cobalt oxides and, in some cases, the migration of the cations to other exchange positions. The presence of exchanged lanthanum seems to preserve the integrity of the zeolite structure preventing the migration of cobalt ions with the subsequent formation of cobalt oxides which favors the reaction of methane with O2, thus decreasing N2 production.
Fil: Gutierrez, Laura Beatriz. 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: Lombardo, Eduardo Agustin. 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
Mordenite Stability
Co-Mordenite Deactivation
Zeolite Hydrothermal Stability
Nox Elimination
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:11336/57163
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/57163
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Steam resistant CoLa-mordenite catalysts for the SCR of NOx with CH4Gutierrez, Laura BeatrizLombardo, Eduardo AgustinMordenite StabilityCo-Mordenite DeactivationZeolite Hydrothermal StabilityNox Eliminationhttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2The stabilization of Co-mordenite catalysts through lanthanum exchange is reported here. The effect of exchange order and calcination conditions upon the reduction of NOx to N2 at 500 °C was tracked during 400 h on a stream containing NOx, CH4, O2 and 10% H2O. Both the fresh and used catalysts were characterized through TPR, Raman spectroscopy, FTIR spectroscopy using CO as probe molecule, and XPS. These techniques revealed that the CoLa-mordenite catalysts which were not affected by the severe hydrothermal treatment showed no sign of Co or La migration out of the exchange positions. Instead, those that rapidly deactivated showed the formation of cobalt oxides and, in some cases, the migration of the cations to other exchange positions. The presence of exchanged lanthanum seems to preserve the integrity of the zeolite structure preventing the migration of cobalt ions with the subsequent formation of cobalt oxides which favors the reaction of methane with O2, thus decreasing N2 production.Fil: Gutierrez, Laura Beatriz. 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: Lombardo, Eduardo Agustin. 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 Science2009-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/57163Gutierrez, Laura Beatriz; Lombardo, Eduardo Agustin; Steam resistant CoLa-mordenite catalysts for the SCR of NOx with CH4; Elsevier Science; Applied Catalysis A: General; 360; 2; 6-2009; 107-1190926-860XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.elsevier.com/locate/apcatainfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.apcata.2009.03.031info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:57:24Zoai:ri.conicet.gov.ar:11336/57163instacron: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 09:57:24.352CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Steam resistant CoLa-mordenite catalysts for the SCR of NOx with CH4
title Steam resistant CoLa-mordenite catalysts for the SCR of NOx with CH4
spellingShingle Steam resistant CoLa-mordenite catalysts for the SCR of NOx with CH4
Gutierrez, Laura Beatriz
Mordenite Stability
Co-Mordenite Deactivation
Zeolite Hydrothermal Stability
Nox Elimination
title_short Steam resistant CoLa-mordenite catalysts for the SCR of NOx with CH4
title_full Steam resistant CoLa-mordenite catalysts for the SCR of NOx with CH4
title_fullStr Steam resistant CoLa-mordenite catalysts for the SCR of NOx with CH4
title_full_unstemmed Steam resistant CoLa-mordenite catalysts for the SCR of NOx with CH4
title_sort Steam resistant CoLa-mordenite catalysts for the SCR of NOx with CH4
dc.creator.none.fl_str_mv Gutierrez, Laura Beatriz
Lombardo, Eduardo Agustin
author Gutierrez, Laura Beatriz
author_facet Gutierrez, Laura Beatriz
Lombardo, Eduardo Agustin
author_role author
author2 Lombardo, Eduardo Agustin
author2_role author
dc.subject.none.fl_str_mv Mordenite Stability
Co-Mordenite Deactivation
Zeolite Hydrothermal Stability
Nox Elimination
topic Mordenite Stability
Co-Mordenite Deactivation
Zeolite Hydrothermal Stability
Nox Elimination
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 stabilization of Co-mordenite catalysts through lanthanum exchange is reported here. The effect of exchange order and calcination conditions upon the reduction of NOx to N2 at 500 °C was tracked during 400 h on a stream containing NOx, CH4, O2 and 10% H2O. Both the fresh and used catalysts were characterized through TPR, Raman spectroscopy, FTIR spectroscopy using CO as probe molecule, and XPS. These techniques revealed that the CoLa-mordenite catalysts which were not affected by the severe hydrothermal treatment showed no sign of Co or La migration out of the exchange positions. Instead, those that rapidly deactivated showed the formation of cobalt oxides and, in some cases, the migration of the cations to other exchange positions. The presence of exchanged lanthanum seems to preserve the integrity of the zeolite structure preventing the migration of cobalt ions with the subsequent formation of cobalt oxides which favors the reaction of methane with O2, thus decreasing N2 production.
Fil: Gutierrez, Laura Beatriz. 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: Lombardo, Eduardo Agustin. 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 stabilization of Co-mordenite catalysts through lanthanum exchange is reported here. The effect of exchange order and calcination conditions upon the reduction of NOx to N2 at 500 °C was tracked during 400 h on a stream containing NOx, CH4, O2 and 10% H2O. Both the fresh and used catalysts were characterized through TPR, Raman spectroscopy, FTIR spectroscopy using CO as probe molecule, and XPS. These techniques revealed that the CoLa-mordenite catalysts which were not affected by the severe hydrothermal treatment showed no sign of Co or La migration out of the exchange positions. Instead, those that rapidly deactivated showed the formation of cobalt oxides and, in some cases, the migration of the cations to other exchange positions. The presence of exchanged lanthanum seems to preserve the integrity of the zeolite structure preventing the migration of cobalt ions with the subsequent formation of cobalt oxides which favors the reaction of methane with O2, thus decreasing N2 production.
publishDate 2009
dc.date.none.fl_str_mv 2009-06
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/11336/57163
Gutierrez, Laura Beatriz; Lombardo, Eduardo Agustin; Steam resistant CoLa-mordenite catalysts for the SCR of NOx with CH4; Elsevier Science; Applied Catalysis A: General; 360; 2; 6-2009; 107-119
0926-860X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/57163
identifier_str_mv Gutierrez, Laura Beatriz; Lombardo, Eduardo Agustin; Steam resistant CoLa-mordenite catalysts for the SCR of NOx with CH4; Elsevier Science; Applied Catalysis A: General; 360; 2; 6-2009; 107-119
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/url/http://www.elsevier.com/locate/apcata
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.apcata.2009.03.031
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
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_ 1844613716942782464
score 13.070432

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