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dc.contributor.author
De Souza Ramos, Marcia
dc.contributor.author
Barbosa Lima, Sirlene
dc.contributor.author
Marchetti, Sergio Gustavo
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dc.contributor.author
De Melo Monteiro, Ana Paula
dc.contributor.author
Rangel, Maria do Carmo
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dc.date.available
2015-12-17T17:47:02Z
dc.date.issued
2014-03-10
dc.identifier.citation
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
dc.identifier.issn
1381-1169
dc.identifier.uri
http://hdl.handle.net/11336/3004
dc.description.abstract
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.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
CARBON DIOXIDE
dc.subject
ETHYLBENZENE
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IRON OXIDE NANOPARTICLES
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MAGNESIUM OXIDE
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STYRENE
dc.subject.classification
Ingeniería de Procesos Químicos
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dc.subject.classification
Ingeniería Química
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dc.subject.classification
INGENIERÍAS Y TECNOLOGÍAS
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dc.title
Ethylbenzene dehydrogenation in the presence of carbon dioxide over magnesia-supported iron oxides
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2016-03-30 10:35:44.97925-03
dc.journal.volume
387
dc.journal.pagination
147-155
dc.journal.pais
Países Bajos
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dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: De Souza Ramos, Marcia. Universidade Federal da Bahia. Instituto de Química. Grupo de Estudos em Cinética e Catálise; Brasil
dc.description.fil
Fil: Barbosa Lima, Sirlene. Universidade Federal da Bahia. Instituto de Química. Grupo de Estudos em Cinética e Catálise; Brasil
dc.description.fil
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
dc.description.fil
Fil: De Melo Monteiro, Ana Paula. Universidade Federal da Bahia. Instituto de Química. Grupo de Estudos em Cinética e Catálise;; Brasil
dc.description.fil
Fil: Rangel, Maria do Carmo. Universidade Federal da Bahia. Instituto de Química. Grupo de Estudos em Cinética e Catálise;; Brasil
dc.journal.title
Journal of Molecular Catalysis A: Chemical
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dc.relation.isreferencedin
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
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S1381116914000764
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/http://dx.doi.com/doi:10.1016/j.molcata.2014.03.002
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