Study of the interactions of Pd,In with SiO 2 and Al 2O 3 mixed supports as catalysts for the hydrogenation of nitrates in water

Autores
Marchesini, Fernanda Albana; Picard, N.; Miro, Eduardo Ernesto
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
This paper shows that the combination of Al 2O 3 and SiO 2 as supports of Pd and In allows the modulation of the catalytic properties of nitrate hydrogenation in water in order to improve nitrate conversion and decrease the formation of ammonia. Mechanical mixtures of monometallic catalysts subjected to reduction in hydrogen at 450°C are efficient catalysts when Pd is supported on Al 2O 3 and In is supported on SiO 2, thus showing considerably high activity and selectivity to gaseous nitrogen compounds when the proportions are 75 wt.% of Pd/Al 2O 3 and 25 wt.% of In/SiO 2. When these monometallic catalysts are reduced separately and then mixed in situ in the batch reactor, a moderate activity for nitrate reduction is obtained, suggesting that either some migration of In or Pd occurs in solution generating the bimetallic sites that are necessary to activate nitrateions, or that a loose contact between In and Pd is enough to initiate the reaction. This contact could be favored by the opposite pzc of both supports.
Fil: Marchesini, Fernanda Albana. 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: Picard, N.. 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: Miro, Eduardo Ernesto. 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
Al 2o 3
Mixed Supports
Nitrates
Nitrites
Sio 2
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/52877
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/52877
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Study of the interactions of Pd,In with SiO 2 and Al 2O 3 mixed supports as catalysts for the hydrogenation of nitrates in waterMarchesini, Fernanda AlbanaPicard, N.Miro, Eduardo ErnestoAl 2o 3Mixed SupportsNitratesNitritesSio 2https://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1This paper shows that the combination of Al 2O 3 and SiO 2 as supports of Pd and In allows the modulation of the catalytic properties of nitrate hydrogenation in water in order to improve nitrate conversion and decrease the formation of ammonia. Mechanical mixtures of monometallic catalysts subjected to reduction in hydrogen at 450°C are efficient catalysts when Pd is supported on Al 2O 3 and In is supported on SiO 2, thus showing considerably high activity and selectivity to gaseous nitrogen compounds when the proportions are 75 wt.% of Pd/Al 2O 3 and 25 wt.% of In/SiO 2. When these monometallic catalysts are reduced separately and then mixed in situ in the batch reactor, a moderate activity for nitrate reduction is obtained, suggesting that either some migration of In or Pd occurs in solution generating the bimetallic sites that are necessary to activate nitrateions, or that a loose contact between In and Pd is enough to initiate the reaction. This contact could be favored by the opposite pzc of both supports.Fil: Marchesini, Fernanda Albana. 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: Picard, N.. 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: Miro, Eduardo Ernesto. 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 Science2012-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/52877Marchesini, Fernanda Albana; Picard, N.; Miro, Eduardo Ernesto; Study of the interactions of Pd,In with SiO 2 and Al 2O 3 mixed supports as catalysts for the hydrogenation of nitrates in water; Elsevier Science; Catalysis Communications; 21; 5-2012; 9-131566-7367CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.catcom.2012.01.015info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S1566736712000271info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:07:35Zoai:ri.conicet.gov.ar:11336/52877instacron: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 10:07:36.159CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Study of the interactions of Pd,In with SiO 2 and Al 2O 3 mixed supports as catalysts for the hydrogenation of nitrates in water
title Study of the interactions of Pd,In with SiO 2 and Al 2O 3 mixed supports as catalysts for the hydrogenation of nitrates in water
spellingShingle Study of the interactions of Pd,In with SiO 2 and Al 2O 3 mixed supports as catalysts for the hydrogenation of nitrates in water
Marchesini, Fernanda Albana
Al 2o 3
Mixed Supports
Nitrates
Nitrites
Sio 2
title_short Study of the interactions of Pd,In with SiO 2 and Al 2O 3 mixed supports as catalysts for the hydrogenation of nitrates in water
title_full Study of the interactions of Pd,In with SiO 2 and Al 2O 3 mixed supports as catalysts for the hydrogenation of nitrates in water
title_fullStr Study of the interactions of Pd,In with SiO 2 and Al 2O 3 mixed supports as catalysts for the hydrogenation of nitrates in water
title_full_unstemmed Study of the interactions of Pd,In with SiO 2 and Al 2O 3 mixed supports as catalysts for the hydrogenation of nitrates in water
title_sort Study of the interactions of Pd,In with SiO 2 and Al 2O 3 mixed supports as catalysts for the hydrogenation of nitrates in water
dc.creator.none.fl_str_mv Marchesini, Fernanda Albana
Picard, N.
Miro, Eduardo Ernesto
author Marchesini, Fernanda Albana
author_facet Marchesini, Fernanda Albana
Picard, N.
Miro, Eduardo Ernesto
author_role author
author2 Picard, N.
Miro, Eduardo Ernesto
author2_role author
author
dc.subject.none.fl_str_mv Al 2o 3
Mixed Supports
Nitrates
Nitrites
Sio 2
topic Al 2o 3
Mixed Supports
Nitrates
Nitrites
Sio 2
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv This paper shows that the combination of Al 2O 3 and SiO 2 as supports of Pd and In allows the modulation of the catalytic properties of nitrate hydrogenation in water in order to improve nitrate conversion and decrease the formation of ammonia. Mechanical mixtures of monometallic catalysts subjected to reduction in hydrogen at 450°C are efficient catalysts when Pd is supported on Al 2O 3 and In is supported on SiO 2, thus showing considerably high activity and selectivity to gaseous nitrogen compounds when the proportions are 75 wt.% of Pd/Al 2O 3 and 25 wt.% of In/SiO 2. When these monometallic catalysts are reduced separately and then mixed in situ in the batch reactor, a moderate activity for nitrate reduction is obtained, suggesting that either some migration of In or Pd occurs in solution generating the bimetallic sites that are necessary to activate nitrateions, or that a loose contact between In and Pd is enough to initiate the reaction. This contact could be favored by the opposite pzc of both supports.
Fil: Marchesini, Fernanda Albana. 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: Picard, N.. 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: Miro, Eduardo Ernesto. 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 This paper shows that the combination of Al 2O 3 and SiO 2 as supports of Pd and In allows the modulation of the catalytic properties of nitrate hydrogenation in water in order to improve nitrate conversion and decrease the formation of ammonia. Mechanical mixtures of monometallic catalysts subjected to reduction in hydrogen at 450°C are efficient catalysts when Pd is supported on Al 2O 3 and In is supported on SiO 2, thus showing considerably high activity and selectivity to gaseous nitrogen compounds when the proportions are 75 wt.% of Pd/Al 2O 3 and 25 wt.% of In/SiO 2. When these monometallic catalysts are reduced separately and then mixed in situ in the batch reactor, a moderate activity for nitrate reduction is obtained, suggesting that either some migration of In or Pd occurs in solution generating the bimetallic sites that are necessary to activate nitrateions, or that a loose contact between In and Pd is enough to initiate the reaction. This contact could be favored by the opposite pzc of both supports.
publishDate 2012
dc.date.none.fl_str_mv 2012-05
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/11336/52877
Marchesini, Fernanda Albana; Picard, N.; Miro, Eduardo Ernesto; Study of the interactions of Pd,In with SiO 2 and Al 2O 3 mixed supports as catalysts for the hydrogenation of nitrates in water; Elsevier Science; Catalysis Communications; 21; 5-2012; 9-13
1566-7367
CONICET Digital
CONICET
url http://hdl.handle.net/11336/52877
identifier_str_mv Marchesini, Fernanda Albana; Picard, N.; Miro, Eduardo Ernesto; Study of the interactions of Pd,In with SiO 2 and Al 2O 3 mixed supports as catalysts for the hydrogenation of nitrates in water; Elsevier Science; Catalysis Communications; 21; 5-2012; 9-13
1566-7367
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.catcom.2012.01.015
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S1566736712000271
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv 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_ 1842270008459132928
score 13.13397

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