Ethylbenzene dehydrogenation in the presence of carbon dioxide over magnesia-supported iron oxides

Autores
De Souza Ramos, Marcia; Barbosa Lima, Sirlene; Marchetti, Sergio Gustavo; De Melo Monteiro, Ana Paula; Rangel, Maria do Carmo
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In recent years, several works have been addressed to decrease carbon dioxide emission or to capture, to storage and to use it. An attractive option is its use as feedstock of chemical industry, especially in dehydrogenation reactions (such as ethylbenzene dehydrogenation to produce styrene), providing and exothermic process which can be operated at lower temperatures, making negligible the cracking products. Aiming to find alternative catalysts for this reaction, magnesia-supported iron oxides were studied, being prepared by two different methods. The classical impregnation produced a spinel (MgFe2O4) coexisting with magnesia containing Fe3+ species, this catalyst showing higher specific surface area and being more active and selective than magnesia. Moreover, the deposition of iron nanoparticles through a magnetic fluid on magnesia produced magnesia-supported hematite nanoparticles co-existing with magnesia containing Fe3+ species. In this case, the specific surface area and the activity were even higher and the solid is much more reducible than the other sample. These findings were associated to hematite nanoparticles and to the lower tendency of iron species to diffuse into magnesia lattice. They show that the Fe3+ species are more active and selective to styrene as hematite nanoparticles than when they are in the environment of magnesium ferrite.
Fil: De Souza Ramos, Marcia. Universidade Federal da Bahia. Instituto de Química. Grupo de Estudos em Cinética e Catálise; Brasil
Fil: Barbosa Lima, Sirlene. Universidade Federal da Bahia. Instituto de Química. Grupo de Estudos em Cinética e Catálise; Brasil
Fil: Marchetti, Sergio Gustavo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas "Dr. Jorge J. Ronco". Universidad Nacional de la Plata. Facultad de Ciencias Exactas. Centro de Investigación y Desarrollo en Ciencias Aplicadas; Argentina
Fil: De Melo Monteiro, Ana Paula. Universidade Federal da Bahia. Instituto de Química. Grupo de Estudos em Cinética e Catálise;; Brasil
Fil: Rangel, Maria do Carmo. Universidade Federal da Bahia. Instituto de Química. Grupo de Estudos em Cinética e Catálise;; Brasil
Materia
CARBON DIOXIDE
ETHYLBENZENE
IRON OXIDE NANOPARTICLES
MAGNESIUM OXIDE
STYRENE
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:11336/3004
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/3004
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Ethylbenzene dehydrogenation in the presence of carbon dioxide over magnesia-supported iron oxidesDe Souza Ramos, MarciaBarbosa Lima, SirleneMarchetti, Sergio GustavoDe Melo Monteiro, Ana PaulaRangel, Maria do CarmoCARBON DIOXIDEETHYLBENZENEIRON OXIDE NANOPARTICLESMAGNESIUM OXIDESTYRENEhttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2In recent years, several works have been addressed to decrease carbon dioxide emission or to capture, to storage and to use it. An attractive option is its use as feedstock of chemical industry, especially in dehydrogenation reactions (such as ethylbenzene dehydrogenation to produce styrene), providing and exothermic process which can be operated at lower temperatures, making negligible the cracking products. Aiming to find alternative catalysts for this reaction, magnesia-supported iron oxides were studied, being prepared by two different methods. The classical impregnation produced a spinel (MgFe2O4) coexisting with magnesia containing Fe3+ species, this catalyst showing higher specific surface area and being more active and selective than magnesia. Moreover, the deposition of iron nanoparticles through a magnetic fluid on magnesia produced magnesia-supported hematite nanoparticles co-existing with magnesia containing Fe3+ species. In this case, the specific surface area and the activity were even higher and the solid is much more reducible than the other sample. These findings were associated to hematite nanoparticles and to the lower tendency of iron species to diffuse into magnesia lattice. They show that the Fe3+ species are more active and selective to styrene as hematite nanoparticles than when they are in the environment of magnesium ferrite.Fil: De Souza Ramos, Marcia. Universidade Federal da Bahia. Instituto de Química. Grupo de Estudos em Cinética e Catálise; BrasilFil: Barbosa Lima, Sirlene. Universidade Federal da Bahia. Instituto de Química. Grupo de Estudos em Cinética e Catálise; BrasilFil: Marchetti, Sergio Gustavo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas "Dr. Jorge J. Ronco". Universidad Nacional de la Plata. Facultad de Ciencias Exactas. Centro de Investigación y Desarrollo en Ciencias Aplicadas; ArgentinaFil: De Melo Monteiro, Ana Paula. Universidade Federal da Bahia. Instituto de Química. Grupo de Estudos em Cinética e Catálise;; BrasilFil: Rangel, Maria do Carmo. Universidade Federal da Bahia. Instituto de Química. Grupo de Estudos em Cinética e Catálise;; BrasilElsevier Science2014-03-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/3004De Souza Ramos, Marcia; Barbosa Lima, Sirlene; Marchetti, Sergio Gustavo; De Melo Monteiro, Ana Paula; Rangel, Maria do Carmo; Ethylbenzene dehydrogenation in the presence of carbon dioxide over magnesia-supported iron oxides; Elsevier Science; Journal of Molecular Catalysis A: Chemical; 387; 10-3-2014; 147-1551381-1169enginfo:eu-repo/semantics/reference/url/info:eu-repo/semantics/reference es info:eu-repo/semantics/reference/doi/10.1016/j.molcata.2014.03.002info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S1381116914000764info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.com/doi:10.1016/j.molcata.2014.03.002info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:45:18Zoai:ri.conicet.gov.ar:11336/3004instacron: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:34982025-10-22 11:45:18.567CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Ethylbenzene dehydrogenation in the presence of carbon dioxide over magnesia-supported iron oxides
title Ethylbenzene dehydrogenation in the presence of carbon dioxide over magnesia-supported iron oxides
spellingShingle Ethylbenzene dehydrogenation in the presence of carbon dioxide over magnesia-supported iron oxides
De Souza Ramos, Marcia
CARBON DIOXIDE
ETHYLBENZENE
IRON OXIDE NANOPARTICLES
MAGNESIUM OXIDE
STYRENE
title_short Ethylbenzene dehydrogenation in the presence of carbon dioxide over magnesia-supported iron oxides
title_full Ethylbenzene dehydrogenation in the presence of carbon dioxide over magnesia-supported iron oxides
title_fullStr Ethylbenzene dehydrogenation in the presence of carbon dioxide over magnesia-supported iron oxides
title_full_unstemmed Ethylbenzene dehydrogenation in the presence of carbon dioxide over magnesia-supported iron oxides
title_sort Ethylbenzene dehydrogenation in the presence of carbon dioxide over magnesia-supported iron oxides
dc.creator.none.fl_str_mv De Souza Ramos, Marcia
Barbosa Lima, Sirlene
Marchetti, Sergio Gustavo
De Melo Monteiro, Ana Paula
Rangel, Maria do Carmo
author De Souza Ramos, Marcia
author_facet De Souza Ramos, Marcia
Barbosa Lima, Sirlene
Marchetti, Sergio Gustavo
De Melo Monteiro, Ana Paula
Rangel, Maria do Carmo
author_role author
author2 Barbosa Lima, Sirlene
Marchetti, Sergio Gustavo
De Melo Monteiro, Ana Paula
Rangel, Maria do Carmo
author2_role author
author
author
author
dc.subject.none.fl_str_mv CARBON DIOXIDE
ETHYLBENZENE
IRON OXIDE NANOPARTICLES
MAGNESIUM OXIDE
STYRENE
topic CARBON DIOXIDE
ETHYLBENZENE
IRON OXIDE NANOPARTICLES
MAGNESIUM OXIDE
STYRENE
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv In recent years, several works have been addressed to decrease carbon dioxide emission or to capture, to storage and to use it. An attractive option is its use as feedstock of chemical industry, especially in dehydrogenation reactions (such as ethylbenzene dehydrogenation to produce styrene), providing and exothermic process which can be operated at lower temperatures, making negligible the cracking products. Aiming to find alternative catalysts for this reaction, magnesia-supported iron oxides were studied, being prepared by two different methods. The classical impregnation produced a spinel (MgFe2O4) coexisting with magnesia containing Fe3+ species, this catalyst showing higher specific surface area and being more active and selective than magnesia. Moreover, the deposition of iron nanoparticles through a magnetic fluid on magnesia produced magnesia-supported hematite nanoparticles co-existing with magnesia containing Fe3+ species. In this case, the specific surface area and the activity were even higher and the solid is much more reducible than the other sample. These findings were associated to hematite nanoparticles and to the lower tendency of iron species to diffuse into magnesia lattice. They show that the Fe3+ species are more active and selective to styrene as hematite nanoparticles than when they are in the environment of magnesium ferrite.
Fil: De Souza Ramos, Marcia. Universidade Federal da Bahia. Instituto de Química. Grupo de Estudos em Cinética e Catálise; Brasil
Fil: Barbosa Lima, Sirlene. Universidade Federal da Bahia. Instituto de Química. Grupo de Estudos em Cinética e Catálise; Brasil
Fil: Marchetti, Sergio Gustavo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas "Dr. Jorge J. Ronco". Universidad Nacional de la Plata. Facultad de Ciencias Exactas. Centro de Investigación y Desarrollo en Ciencias Aplicadas; Argentina
Fil: De Melo Monteiro, Ana Paula. Universidade Federal da Bahia. Instituto de Química. Grupo de Estudos em Cinética e Catálise;; Brasil
Fil: Rangel, Maria do Carmo. Universidade Federal da Bahia. Instituto de Química. Grupo de Estudos em Cinética e Catálise;; Brasil
description In recent years, several works have been addressed to decrease carbon dioxide emission or to capture, to storage and to use it. An attractive option is its use as feedstock of chemical industry, especially in dehydrogenation reactions (such as ethylbenzene dehydrogenation to produce styrene), providing and exothermic process which can be operated at lower temperatures, making negligible the cracking products. Aiming to find alternative catalysts for this reaction, magnesia-supported iron oxides were studied, being prepared by two different methods. The classical impregnation produced a spinel (MgFe2O4) coexisting with magnesia containing Fe3+ species, this catalyst showing higher specific surface area and being more active and selective than magnesia. Moreover, the deposition of iron nanoparticles through a magnetic fluid on magnesia produced magnesia-supported hematite nanoparticles co-existing with magnesia containing Fe3+ species. In this case, the specific surface area and the activity were even higher and the solid is much more reducible than the other sample. These findings were associated to hematite nanoparticles and to the lower tendency of iron species to diffuse into magnesia lattice. They show that the Fe3+ species are more active and selective to styrene as hematite nanoparticles than when they are in the environment of magnesium ferrite.
publishDate 2014
dc.date.none.fl_str_mv 2014-03-10
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/11336/3004
De Souza Ramos, Marcia; Barbosa Lima, Sirlene; Marchetti, Sergio Gustavo; De Melo Monteiro, Ana Paula; Rangel, Maria do Carmo; Ethylbenzene dehydrogenation in the presence of carbon dioxide over magnesia-supported iron oxides; Elsevier Science; Journal of Molecular Catalysis A: Chemical; 387; 10-3-2014; 147-155
1381-1169
url http://hdl.handle.net/11336/3004
identifier_str_mv De Souza Ramos, Marcia; Barbosa Lima, Sirlene; Marchetti, Sergio Gustavo; De Melo Monteiro, Ana Paula; Rangel, Maria do Carmo; Ethylbenzene dehydrogenation in the presence of carbon dioxide over magnesia-supported iron oxides; Elsevier Science; Journal of Molecular Catalysis A: Chemical; 387; 10-3-2014; 147-155
1381-1169
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/reference/url/info:eu-repo/semantics/reference es info:eu-repo/semantics/reference/doi/10.1016/j.molcata.2014.03.002
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S1381116914000764
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.com/doi:10.1016/j.molcata.2014.03.002
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
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 12.982451

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