Palladium catalysts in the selective hydrogenation of hexa-1,5-diene and hexa-1,3-diene in the liquid phase. E ect of tin and silver addition

Detalhes bibliográficos
Autor(a) principal: Sales, Emerson Andrade
Data de Publicação: 1999
Outros Autores: Bugli, Guy, Ensuque, Alain, Mendes, Mario de Jesus, Bozon Verduraz, François
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://www.repositorio.ufba.br/ri/handle/ri/12510
Resumo: p. 491-498
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spelling Sales, Emerson AndradeBugli, GuyEnsuque, AlainMendes, Mario de JesusBozon Verduraz, FrançoisSales, Emerson AndradeBugli, GuyEnsuque, AlainMendes, Mario de JesusBozon Verduraz, François2013-08-08T20:12:29Z2013-08-08T20:12:29Z19991463-9076http://www.repositorio.ufba.br/ri/handle/ri/12510n. 3p. 491-498Palladium, palladiumÈtin and palladiumÈsilver catalysts, supported on two alumina samples with di erent acidity, have been prepared by di usional impregnation for use in the selective hydrogenation of hexa-1,5- diene and hexa-1,3-diene in the liquid phase. UVÈVISÈNIR (transmission and di use reÑectance) studies of the palladium starting solutions and of the solids obtained during all preparation stages (impregnation, drying, calcination) show that the nature of the supported precursor species depends on the acidity of the alumina. Palladium tetrachloropalladate (strongly bound anionic species) are predominant on the more acidic alumina while the more basic one favours the formation of weakly bound neutral complexes through exchange of chloride ligands with hydroxy groups and water. The nature of these species inÑuences not only the particle size of monometallic Pd samples (the stronger the interaction, the smaller the metal particle size), but also the nature of the Ðnal bimetallic PdÈAg catalysts ; a PdÈAg solid solution is observed on the bimetallic catalyst prepared by interaction of a cationic Ag precursor with supported PdCl whereas interaction with neutral 42~, Pd species leads to separate metal phases. The interaction of Sn precursor solutions with supported PdII species induces the formation of heteronuclear species which decompose upon drying; Pd or phases 2Sn Pd3Sn are detected on the Ðnal catalysts, depending on the initial Pd/Sn ratio and on the nature of the Sn precursor solvent (using ethanol favours the formation of Pd3Sn).Submitted by Santiago Fabio (fabio.ssantiago@hotmail.com) on 2013-08-08T20:12:29Z No. of bitstreams: 1 555555555555555.pdf: 195292 bytes, checksum: 30c8820da9bf9249880005ef597c63e5 (MD5)Made available in DSpace on 2013-08-08T20:12:29Z (GMT). No. of bitstreams: 1 555555555555555.pdf: 195292 bytes, checksum: 30c8820da9bf9249880005ef597c63e5 (MD5) Previous issue date: 1999SalvadorPhysical Chemistry Chemical Physics10.1039/A808666Dreponame:Repositório Institucional da UFBAinstname:Universidade Federal da Bahia (UFBA)instacron:UFBAPalladium catalysts in the selective hydrogenation of hexa-1,5-diene and hexa-1,3-diene in the liquid phase. 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dc.title.pt_BR.fl_str_mv Palladium catalysts in the selective hydrogenation of hexa-1,5-diene and hexa-1,3-diene in the liquid phase. E ect of tin and silver addition
dc.title.alternative.pt_BR.fl_str_mv Physical Chemistry Chemical Physics
title Palladium catalysts in the selective hydrogenation of hexa-1,5-diene and hexa-1,3-diene in the liquid phase. E ect of tin and silver addition
spellingShingle Palladium catalysts in the selective hydrogenation of hexa-1,5-diene and hexa-1,3-diene in the liquid phase. E ect of tin and silver addition
Sales, Emerson Andrade
title_short Palladium catalysts in the selective hydrogenation of hexa-1,5-diene and hexa-1,3-diene in the liquid phase. E ect of tin and silver addition
title_full Palladium catalysts in the selective hydrogenation of hexa-1,5-diene and hexa-1,3-diene in the liquid phase. E ect of tin and silver addition
title_fullStr Palladium catalysts in the selective hydrogenation of hexa-1,5-diene and hexa-1,3-diene in the liquid phase. E ect of tin and silver addition
title_full_unstemmed Palladium catalysts in the selective hydrogenation of hexa-1,5-diene and hexa-1,3-diene in the liquid phase. E ect of tin and silver addition
title_sort Palladium catalysts in the selective hydrogenation of hexa-1,5-diene and hexa-1,3-diene in the liquid phase. E ect of tin and silver addition
author Sales, Emerson Andrade
author_facet Sales, Emerson Andrade
Bugli, Guy
Ensuque, Alain
Mendes, Mario de Jesus
Bozon Verduraz, François
author_role author
author2 Bugli, Guy
Ensuque, Alain
Mendes, Mario de Jesus
Bozon Verduraz, François
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Sales, Emerson Andrade
Bugli, Guy
Ensuque, Alain
Mendes, Mario de Jesus
Bozon Verduraz, François
Sales, Emerson Andrade
Bugli, Guy
Ensuque, Alain
Mendes, Mario de Jesus
Bozon Verduraz, François
description p. 491-498
publishDate 1999
dc.date.issued.fl_str_mv 1999
dc.date.accessioned.fl_str_mv 2013-08-08T20:12:29Z
dc.date.available.fl_str_mv 2013-08-08T20:12:29Z
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/12510
dc.identifier.issn.none.fl_str_mv 1463-9076
dc.identifier.number.pt_BR.fl_str_mv n. 3
identifier_str_mv 1463-9076
n. 3
url http://www.repositorio.ufba.br/ri/handle/ri/12510
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.publisher.none.fl_str_mv Physical Chemistry Chemical Physics
publisher.none.fl_str_mv Physical Chemistry Chemical Physics
dc.source.pt_BR.fl_str_mv 10.1039/A808666D
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)
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institution UFBA
reponame_str Repositório Institucional da UFBA
collection Repositório Institucional da UFBA
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