Pt and Pd catalysts supported on Al2O3 modified with rare earth oxides in the hydrogenation of tetralin, in the presence of thiophene

Detalhes bibliográficos
Autor(a) principal: Brandão, Denise Sousa
Data de Publicação: 2008
Outros Autores: Galvão, Rosana Machado, Graça, Maria da, Rocha, Martins Carneiro da, Bargiela, Pascal, Sales, Emerson Andrade
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://www.repositorio.ufba.br/ri/handle/ri/6315
Resumo: Acesso restrito: Texto completo.p. 324-330
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spelling Brandão, Denise SousaGalvão, Rosana MachadoGraça, Maria daRocha, Martins Carneiro daBargiela, PascalSales, Emerson AndradeBrandão, Denise SousaGalvão, Rosana MachadoGraça, Maria daRocha, Martins Carneiro daBargiela, PascalSales, Emerson Andrade2012-07-04T15:31:13Z20080920-5861http://www.repositorio.ufba.br/ri/handle/ri/6315v. 133Acesso restrito: Texto completo.p. 324-330Due to stringent environmental regulations, the reduction of aromatic compounds present in diesel fuel, precursors of particulate matter, is becoming one of the most important technologies in petroleum refining industries. However, the high quantity of nitrogen and sulfur compounds limits the use of catalytic processes. In this work Pt and Pd catalysts supported on alumina modified with rare earth oxides (Ce and Pr) were prepared, characterized by XRF, XRD, UV–vis-DRS and XPS, and tested in the hydrogenation of tetralin reaction, in the presence of different concentrations of thiophene. The results showed that the use of a Pr-modified alumina support enhanced the tolerance of the Pt/Al2O3 catalyst to thiophene. The addition of a second metal, Pd, despite a loss in activity, increased tolerance to this poison. The combination of both promoters exhibited a synergic effect, as the bimetallic catalyst supported in the Pr-modified alumina showed a very low sensitivity to thiophene, up to 2600 ppm, explained by the electron-deficiency of the metallic Pt.Submitted by JURANDI DE SOUZA SILVA (jssufba@hotmail.com) on 2012-07-04T15:31:13Z No. of bitstreams: 1 1-s2.0-S0920586107008954-main.pdf: 724930 bytes, checksum: 97bcbd91d88c1f9fff5c7a437fb9c54e (MD5)Made available in DSpace on 2012-07-04T15:31:13Z (GMT). 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dc.title.pt_BR.fl_str_mv Pt and Pd catalysts supported on Al2O3 modified with rare earth oxides in the hydrogenation of tetralin, in the presence of thiophene
dc.title.alternative.pt_BR.fl_str_mv Catalysis Today
title Pt and Pd catalysts supported on Al2O3 modified with rare earth oxides in the hydrogenation of tetralin, in the presence of thiophene
spellingShingle Pt and Pd catalysts supported on Al2O3 modified with rare earth oxides in the hydrogenation of tetralin, in the presence of thiophene
Brandão, Denise Sousa
Catalysts
Al2O3
Rare earth oxides
title_short Pt and Pd catalysts supported on Al2O3 modified with rare earth oxides in the hydrogenation of tetralin, in the presence of thiophene
title_full Pt and Pd catalysts supported on Al2O3 modified with rare earth oxides in the hydrogenation of tetralin, in the presence of thiophene
title_fullStr Pt and Pd catalysts supported on Al2O3 modified with rare earth oxides in the hydrogenation of tetralin, in the presence of thiophene
title_full_unstemmed Pt and Pd catalysts supported on Al2O3 modified with rare earth oxides in the hydrogenation of tetralin, in the presence of thiophene
title_sort Pt and Pd catalysts supported on Al2O3 modified with rare earth oxides in the hydrogenation of tetralin, in the presence of thiophene
author Brandão, Denise Sousa
author_facet Brandão, Denise Sousa
Galvão, Rosana Machado
Graça, Maria da
Rocha, Martins Carneiro da
Bargiela, Pascal
Sales, Emerson Andrade
author_role author
author2 Galvão, Rosana Machado
Graça, Maria da
Rocha, Martins Carneiro da
Bargiela, Pascal
Sales, Emerson Andrade
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Brandão, Denise Sousa
Galvão, Rosana Machado
Graça, Maria da
Rocha, Martins Carneiro da
Bargiela, Pascal
Sales, Emerson Andrade
Brandão, Denise Sousa
Galvão, Rosana Machado
Graça, Maria da
Rocha, Martins Carneiro da
Bargiela, Pascal
Sales, Emerson Andrade
dc.subject.por.fl_str_mv Catalysts
Al2O3
Rare earth oxides
topic Catalysts
Al2O3
Rare earth oxides
description Acesso restrito: Texto completo.p. 324-330
publishDate 2008
dc.date.issued.fl_str_mv 2008
dc.date.accessioned.fl_str_mv 2012-07-04T15:31:13Z
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/6315
dc.identifier.issn.none.fl_str_mv 0920-5861
dc.identifier.number.pt_BR.fl_str_mv v. 133
identifier_str_mv 0920-5861
v. 133
url http://www.repositorio.ufba.br/ri/handle/ri/6315
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.cattod.2007.12.128
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