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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/76995
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CONICET Digital (CONICET) |
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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 Técnicas2025-09-03T09:45:34Zoai: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:34982025-09-03 09:45:34.697CONICET 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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1842268740014571520 |
score |
13.13397 |