Gold, palladium and gold–palladium supported on silica catalysts prepared by sol–gel method : synthesis, characterization and catalytic behavior in the ethanol steam reforming.

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.creatorSilva, Anderson Gabriel Marques da-
Autor(es): dc.creatorRobles Azocar, Patrícia Alejandra-
Autor(es): dc.creatorDias, Anderson-
Autor(es): dc.creatorFajardo, Humberto Vieira-
Autor(es): dc.creatorLovón, Adriana Siviero Pagani-
Autor(es): dc.creatorQuintana, Juan José Lovón-
Autor(es): dc.creatorValença, Gustavo Paim-
Data de aceite: dc.date.accessioned2025-08-21T15:32:50Z-
Data de disponibilização: dc.date.available2025-08-21T15:32:50Z-
Data de envio: dc.date.issued2017-06-19-
Data de envio: dc.date.issued2017-06-19-
Data de envio: dc.date.issued2013-
Fonte completa do material: dc.identifierhttp://www.repositorio.ufop.br/handle/123456789/7996-
Fonte completa do material: dc.identifierhttps://link.springer.com/article/10.1007/s10971-013-3076-8-
Fonte completa do material: dc.identifierhttps://doi.org/10.1007/s10971-013-3076-8-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1017973-
Descrição: dc.descriptionNoble-metal-based catalysts supported on silica (Au/SiO2, Pd/SiO2 and Au–Pd/SiO2) were prepared by the sol–gel method and were evaluated in the steam reforming of ethanol for hydrogen production. The catalysts were characterized by N2 physisorption (BET/BJH methods), X-ray diffraction, temperature programmed reduction analysis, H2 chemisorption, atomic absorption spectrophotometry and Raman spectroscopy. The structural characterization of the Au- and Pd-containing catalysts after calcination showed that the solids are predominantly formed by Au0 , Pd0 and PdO species and was observed that the metallic Pd dispersion diminished in the presence of Au0 . The results revealed that the catalytic behavior could be influenced by the experimental conditions and the nature of the catalyst employed. The Pd/SiO2 catalyst showed the best performance among the catalysts tested at the highest reaction temperature (600 C) due to the more effective action of the metallic active phase, which covers a greater area in this sample. At this same reaction temperature, the Au–Pd/SiO2 catalyst showed a significant deactivation, probably due to the lower Pd dispersion presented by this catalyst.-
Formato: dc.formatapplication/pdf-
Idioma: dc.languageen-
Direitos: dc.rightsrestrito-
Palavras-chave: dc.subjectSol–gel method-
Palavras-chave: dc.subjectNoble metals-
Palavras-chave: dc.subjectEthanol-
Palavras-chave: dc.subjectHydrogen-
Título: dc.titleGold, palladium and gold–palladium supported on silica catalysts prepared by sol–gel method : synthesis, characterization and catalytic behavior in the ethanol steam reforming.-
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