https://repositorio.ufba.br/handle/ri/8194
Campo DC | Valor | Idioma |
---|---|---|
dc.contributor.author | Sales, Emerson Andrade | - |
dc.contributor.author | Benhamida, Béatrice | - |
dc.contributor.author | Caizergues, Virginie | - |
dc.contributor.author | Lagier, Jean Pierre | - |
dc.contributor.author | Fiévet, Fernand | - |
dc.contributor.author | Bozon Verduraz, François | - |
dc.creator | Sales, Emerson Andrade | - |
dc.creator | Benhamida, Béatrice | - |
dc.creator | Caizergues, Virginie | - |
dc.creator | Lagier, Jean Pierre | - |
dc.creator | Fiévet, Fernand | - |
dc.creator | Bozon Verduraz, François | - |
dc.date.accessioned | 2013-01-28T15:19:48Z | - |
dc.date.issued | 1998 | - |
dc.identifier.issn | 0926-860X | - |
dc.identifier.uri | http://www.repositorio.ufba.br/ri/handle/ri/8194 | - |
dc.description | Texto completo: acesso restrito. p.273–283 | pt_BR |
dc.description.abstract | Palladium and palladium–silver catalysts, supported on γ-alumina, were prepared by precipitation in a liquid polyol and characterized by X-ray powder diffraction (XRD), transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). The catalysts were tested in the hydrogenation of hexa-1,5-diene in liquid phase, at 313 K. The addition of silver improved the hex-1-ene fractional selectivity in all cases, but lowered the catalyst activity when the Pd/Ag ratio was about unity. On the other hand a palladium-rich (Pd/Ag=4) bimetallic catalyst exhibited a very good activity and a good selectivity to hex-1-ene as well. The effects of silver addition are ascribed to the dilution of palladium atoms by silver atoms, which prevents the isomerisation of hexa-1,5-diene. Hence, the polyol method, which has been used up to now to prepare metal powders with controlled morphology, appears of interest in the elaboration of supported metal catalysts. | pt_BR |
dc.language.iso | en | pt_BR |
dc.source | http://dx.doi.org/10.1016/S0926-860X(98)00124-0 | pt_BR |
dc.subject | Hexa-1,5-diene | pt_BR |
dc.subject | Liquid phase hydrogenation | pt_BR |
dc.subject | Palladium±silver catalysts | pt_BR |
dc.subject | Polyol process | pt_BR |
dc.title | Alumina-supported Pd, Ag and Pd–Ag catalysts: preparation through the polyol process, characterization and reactivity in hexa-1,5-diene hydrogenation | pt_BR |
dc.title.alternative | Applied Catalysis A: General | pt_BR |
dc.type | Artigo de Periódico | pt_BR |
dc.identifier.number | v. 172, n. 2 | pt_BR |
dc.embargo.liftdate | 10000-01-01 | - |
Aparece nas coleções: | Artigo Publicado em Periódico (Química) |
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