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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/57163
Ver los metadatos del registro completo
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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 Técnicas2025-09-03T09:55:11Zoai: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:34982025-09-03 09:55:12.035CONICET 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 |
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1842269329844862976 |
score |
13.13397 |