Ce effect on the selective catalytic reduction of NO with CH4 on Pd-mordenite in the presence of O2 and H2O

Autores
Costilla, Ignacio Oscar; Sanchez, Miguel Dario; Volpe, María Alicia; Gigola, Carlos Eugenio
Año de publicación
2011
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The activity, selectivity and stability of Pd/H-MOR and Ce-Pd/H-MOR catalysts for the selective catalytic reduction of NO with CH 4 (SCR-CH 4 ) were studied in O 2 excess (4.1%) in the absence and presence of H 2 O (5%). The reaction was carried out in a 300-650 °C temperature range with a S.V. of ≅33,000 h -1 . The characterization of fresh and used catalysts by FTIR spectroscopy of adsorbed CO and NO showed that the loss of NO conversion in H 2 O presence was due to a decreasing concentration of Pd 2+ sites and to the parallel formation of PdO particles that enhanced CH 4 combustion under dry conditions. This behavior was modified by Ce addition. Under wet conditions the Ce-Pd/H-MOR catalyst was very active (X NO = 76% at 550 °C), selective (100% of N 2 ) and stable. The FTIR spectrum of CO adsorbed on used samples demonstrated that Ce inhibited the transformation of active Pd 2+ into PdO particles. However, Ce presence also enhanced CH 4 combustion under wet conditions. At low temperatures (<500 °C) H 2 O presence inhibited N 2 O formation and 90% selectivity to N 2 , which improved with Ce addition, was obtained.
Fil: Costilla, Ignacio Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina
Fil: Sanchez, Miguel Dario. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Física del Sur. Universidad Nacional del Sur. Departamento de Física. Instituto de Física del Sur; Argentina. Universidad Nacional del Sur. Departamento de Física; Argentina
Fil: Volpe, María Alicia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina
Fil: Gigola, Carlos Eugenio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina
Materia
Ce-Pd/H-Mor
Ftir
Pd/H-Mor
Selective Catalytic Reduction of No
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:11336/76995
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/76995
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Ce effect on the selective catalytic reduction of NO with CH4 on Pd-mordenite in the presence of O2 and H2OCostilla, Ignacio OscarSanchez, Miguel DarioVolpe, María AliciaGigola, Carlos EugenioCe-Pd/H-MorFtirPd/H-MorSelective Catalytic Reduction of Nohttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2The activity, selectivity and stability of Pd/H-MOR and Ce-Pd/H-MOR catalysts for the selective catalytic reduction of NO with CH 4 (SCR-CH 4 ) were studied in O 2 excess (4.1%) in the absence and presence of H 2 O (5%). The reaction was carried out in a 300-650 °C temperature range with a S.V. of ≅33,000 h -1 . The characterization of fresh and used catalysts by FTIR spectroscopy of adsorbed CO and NO showed that the loss of NO conversion in H 2 O presence was due to a decreasing concentration of Pd 2+ sites and to the parallel formation of PdO particles that enhanced CH 4 combustion under dry conditions. This behavior was modified by Ce addition. Under wet conditions the Ce-Pd/H-MOR catalyst was very active (X NO = 76% at 550 °C), selective (100% of N 2 ) and stable. The FTIR spectrum of CO adsorbed on used samples demonstrated that Ce inhibited the transformation of active Pd 2+ into PdO particles. However, Ce presence also enhanced CH 4 combustion under wet conditions. At low temperatures (<500 °C) H 2 O presence inhibited N 2 O formation and 90% selectivity to N 2 , which improved with Ce addition, was obtained.Fil: Costilla, Ignacio Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; ArgentinaFil: Sanchez, Miguel Dario. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Física del Sur. Universidad Nacional del Sur. Departamento de Física. Instituto de Física del Sur; Argentina. Universidad Nacional del Sur. Departamento de Física; ArgentinaFil: Volpe, María Alicia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; ArgentinaFil: Gigola, Carlos Eugenio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; ArgentinaElsevier Science2011-08info: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/11336/76995Costilla, Ignacio Oscar; Sanchez, Miguel Dario; Volpe, María Alicia; Gigola, Carlos Eugenio; Ce effect on the selective catalytic reduction of NO with CH4 on Pd-mordenite in the presence of O2 and H2O; Elsevier Science; Catalysis Today; 172; 1; 8-2011; 84-890920-5861CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0920586111002276info:eu-repo/semantics/altIdentifier/doi/10.1016/j.cattod.2011.03.025info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:36:13Zoai:ri.conicet.gov.ar:11336/76995instacron: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 09:36:13.475CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Ce effect on the selective catalytic reduction of NO with CH4 on Pd-mordenite in the presence of O2 and H2O
title Ce effect on the selective catalytic reduction of NO with CH4 on Pd-mordenite in the presence of O2 and H2O
spellingShingle Ce effect on the selective catalytic reduction of NO with CH4 on Pd-mordenite in the presence of O2 and H2O
Costilla, Ignacio Oscar
Ce-Pd/H-Mor
Ftir
Pd/H-Mor
Selective Catalytic Reduction of No
title_short Ce effect on the selective catalytic reduction of NO with CH4 on Pd-mordenite in the presence of O2 and H2O
title_full Ce effect on the selective catalytic reduction of NO with CH4 on Pd-mordenite in the presence of O2 and H2O
title_fullStr Ce effect on the selective catalytic reduction of NO with CH4 on Pd-mordenite in the presence of O2 and H2O
title_full_unstemmed Ce effect on the selective catalytic reduction of NO with CH4 on Pd-mordenite in the presence of O2 and H2O
title_sort Ce effect on the selective catalytic reduction of NO with CH4 on Pd-mordenite in the presence of O2 and H2O
dc.creator.none.fl_str_mv Costilla, Ignacio Oscar
Sanchez, Miguel Dario
Volpe, María Alicia
Gigola, Carlos Eugenio
author Costilla, Ignacio Oscar
author_facet Costilla, Ignacio Oscar
Sanchez, Miguel Dario
Volpe, María Alicia
Gigola, Carlos Eugenio
author_role author
author2 Sanchez, Miguel Dario
Volpe, María Alicia
Gigola, Carlos Eugenio
author2_role author
author
author
dc.subject.none.fl_str_mv Ce-Pd/H-Mor
Ftir
Pd/H-Mor
Selective Catalytic Reduction of No
topic Ce-Pd/H-Mor
Ftir
Pd/H-Mor
Selective Catalytic Reduction of No
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 activity, selectivity and stability of Pd/H-MOR and Ce-Pd/H-MOR catalysts for the selective catalytic reduction of NO with CH 4 (SCR-CH 4 ) were studied in O 2 excess (4.1%) in the absence and presence of H 2 O (5%). The reaction was carried out in a 300-650 °C temperature range with a S.V. of ≅33,000 h -1 . The characterization of fresh and used catalysts by FTIR spectroscopy of adsorbed CO and NO showed that the loss of NO conversion in H 2 O presence was due to a decreasing concentration of Pd 2+ sites and to the parallel formation of PdO particles that enhanced CH 4 combustion under dry conditions. This behavior was modified by Ce addition. Under wet conditions the Ce-Pd/H-MOR catalyst was very active (X NO = 76% at 550 °C), selective (100% of N 2 ) and stable. The FTIR spectrum of CO adsorbed on used samples demonstrated that Ce inhibited the transformation of active Pd 2+ into PdO particles. However, Ce presence also enhanced CH 4 combustion under wet conditions. At low temperatures (<500 °C) H 2 O presence inhibited N 2 O formation and 90% selectivity to N 2 , which improved with Ce addition, was obtained.
Fil: Costilla, Ignacio Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina
Fil: Sanchez, Miguel Dario. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Física del Sur. Universidad Nacional del Sur. Departamento de Física. Instituto de Física del Sur; Argentina. Universidad Nacional del Sur. Departamento de Física; Argentina
Fil: Volpe, María Alicia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina
Fil: Gigola, Carlos Eugenio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina
description The activity, selectivity and stability of Pd/H-MOR and Ce-Pd/H-MOR catalysts for the selective catalytic reduction of NO with CH 4 (SCR-CH 4 ) were studied in O 2 excess (4.1%) in the absence and presence of H 2 O (5%). The reaction was carried out in a 300-650 °C temperature range with a S.V. of ≅33,000 h -1 . The characterization of fresh and used catalysts by FTIR spectroscopy of adsorbed CO and NO showed that the loss of NO conversion in H 2 O presence was due to a decreasing concentration of Pd 2+ sites and to the parallel formation of PdO particles that enhanced CH 4 combustion under dry conditions. This behavior was modified by Ce addition. Under wet conditions the Ce-Pd/H-MOR catalyst was very active (X NO = 76% at 550 °C), selective (100% of N 2 ) and stable. The FTIR spectrum of CO adsorbed on used samples demonstrated that Ce inhibited the transformation of active Pd 2+ into PdO particles. However, Ce presence also enhanced CH 4 combustion under wet conditions. At low temperatures (<500 °C) H 2 O presence inhibited N 2 O formation and 90% selectivity to N 2 , which improved with Ce addition, was obtained.
publishDate 2011
dc.date.none.fl_str_mv 2011-08
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/11336/76995
Costilla, Ignacio Oscar; Sanchez, Miguel Dario; Volpe, María Alicia; Gigola, Carlos Eugenio; Ce effect on the selective catalytic reduction of NO with CH4 on Pd-mordenite in the presence of O2 and H2O; Elsevier Science; Catalysis Today; 172; 1; 8-2011; 84-89
0920-5861
CONICET Digital
CONICET
url http://hdl.handle.net/11336/76995
identifier_str_mv Costilla, Ignacio Oscar; Sanchez, Miguel Dario; Volpe, María Alicia; Gigola, Carlos Eugenio; Ce effect on the selective catalytic reduction of NO with CH4 on Pd-mordenite in the presence of O2 and H2O; Elsevier Science; Catalysis Today; 172; 1; 8-2011; 84-89
0920-5861
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0920586111002276
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.cattod.2011.03.025
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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score 13.070432

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