The influence of dopants on the catalytic activity of hematite in the ethylbenzene dehydrogenation

Detalhes bibliográficos
Autor(a) principal: Ramos, Márcia de Souza
Data de Publicação: 2008
Outros Autores: Santos, Manuela de Santana, Gomes, Lucimar Pacheco, Albornoz, Alberto, Varela, Maria do Carmo Rangel Santos
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://www.repositorio.ufba.br/ri/handle/ri/6128
Resumo: Acesso restrito: Texto completo. p. 12-17
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spelling Ramos, Márcia de SouzaSantos, Manuela de SantanaGomes, Lucimar PachecoAlbornoz, AlbertoVarela, Maria do Carmo Rangel SantosRamos, Márcia de SouzaSantos, Manuela de SantanaGomes, Lucimar PachecoAlbornoz, AlbertoVarela, Maria do Carmo Rangel Santos2012-06-14T11:08:14Z20080926-860Xhttp://www.repositorio.ufba.br/ri/handle/ri/6128v. 341, n. 1-2Acesso restrito: Texto completo. p. 12-17The effect of neodymium, lanthanum, aluminum and zirconium on the textural and catalytic properties of hematite was studied in this work, which aimed to develop catalysts to ethylbenzene dehydrogenation, in the presence of steam, the main commercial route to obtain styrene. Hematite and magnetite were found in fresh and spent catalysts, respectively. All dopants increased the specific surface area of the fresh and spent catalysts and made them more resistant against reduction, but only aluminum avoided sintering during reaction. The dopants increased the catalytic activity per area of hematite, except aluminumwhich acted only as a textural promoter. The selectivity was decreased due to zirconium and lanthanum while the other dopants did not change this parameter. The neodymiumcontaining catalyst showed high levels of activity and selectivity and was able to work up to 530 8C, without deactivation, being the most promising with regard to styrene production.Submitted by JURANDI DE SOUZA SILVA (jssufba@hotmail.com) on 2012-06-14T11:08:14Z No. of bitstreams: 1 __ac.els-cdn.com_S003592...94ad7d084f834772b5bc760c76585.pdf: 235873 bytes, checksum: e1c84fdd7522fe1db5c5031dbef7f109 (MD5)Made available in DSpace on 2012-06-14T11:08:14Z (GMT). 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dc.title.pt_BR.fl_str_mv The influence of dopants on the catalytic activity of hematite in the ethylbenzene dehydrogenation
dc.title.alternative.pt_BR.fl_str_mv Applied Catalysis A-General
title The influence of dopants on the catalytic activity of hematite in the ethylbenzene dehydrogenation
spellingShingle The influence of dopants on the catalytic activity of hematite in the ethylbenzene dehydrogenation
Ramos, Márcia de Souza
Styrene
Ethylbenzene
Hematite
title_short The influence of dopants on the catalytic activity of hematite in the ethylbenzene dehydrogenation
title_full The influence of dopants on the catalytic activity of hematite in the ethylbenzene dehydrogenation
title_fullStr The influence of dopants on the catalytic activity of hematite in the ethylbenzene dehydrogenation
title_full_unstemmed The influence of dopants on the catalytic activity of hematite in the ethylbenzene dehydrogenation
title_sort The influence of dopants on the catalytic activity of hematite in the ethylbenzene dehydrogenation
author Ramos, Márcia de Souza
author_facet Ramos, Márcia de Souza
Santos, Manuela de Santana
Gomes, Lucimar Pacheco
Albornoz, Alberto
Varela, Maria do Carmo Rangel Santos
author_role author
author2 Santos, Manuela de Santana
Gomes, Lucimar Pacheco
Albornoz, Alberto
Varela, Maria do Carmo Rangel Santos
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Ramos, Márcia de Souza
Santos, Manuela de Santana
Gomes, Lucimar Pacheco
Albornoz, Alberto
Varela, Maria do Carmo Rangel Santos
Ramos, Márcia de Souza
Santos, Manuela de Santana
Gomes, Lucimar Pacheco
Albornoz, Alberto
Varela, Maria do Carmo Rangel Santos
dc.subject.por.fl_str_mv Styrene
Ethylbenzene
Hematite
topic Styrene
Ethylbenzene
Hematite
description Acesso restrito: Texto completo. p. 12-17
publishDate 2008
dc.date.issued.fl_str_mv 2008
dc.date.accessioned.fl_str_mv 2012-06-14T11:08:14Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://www.repositorio.ufba.br/ri/handle/ri/6128
dc.identifier.issn.none.fl_str_mv 0926-860X
dc.identifier.number.pt_BR.fl_str_mv v. 341, n. 1-2
identifier_str_mv 0926-860X
v. 341, n. 1-2
url http://www.repositorio.ufba.br/ri/handle/ri/6128
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.pt_BR.fl_str_mv http://dx.doi.org/10.1016/j.apcata.2007.12.035
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFBA
instname:Universidade Federal da Bahia (UFBA)
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instname_str Universidade Federal da Bahia (UFBA)
instacron_str UFBA
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reponame_str Repositório Institucional da UFBA
collection Repositório Institucional da UFBA
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