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Campo DC | Valor | Idioma |
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dc.contributor.author | Garcia, Fillipe Augusto da Costa | - |
dc.contributor.author | Braga, Valdeilson Souza | - |
dc.contributor.author | Dias, José Alves | - |
dc.contributor.author | Silva, Júnia Chaves Marinho e | - |
dc.contributor.author | Dias, Sílvia Cláudia Loureiro | - |
dc.contributor.author | Davo, Jorge L. B. | - |
dc.creator | Garcia, Fillipe Augusto da Costa | - |
dc.creator | Braga, Valdeilson Souza | - |
dc.creator | Dias, José Alves | - |
dc.creator | Silva, Júnia Chaves Marinho e | - |
dc.creator | Dias, Sílvia Cláudia Loureiro | - |
dc.creator | Davo, Jorge L. B. | - |
dc.date.accessioned | 2011-12-14T12:02:30Z | - |
dc.date.available | 2011-12-14T12:02:30Z | - |
dc.date.issued | 2007 | - |
dc.identifier.issn | 1572-879X | - |
dc.identifier.uri | http://www.repositorio.ufba.br/ri/handle/ri/4849 | - |
dc.description | p.101–107 | pt_BR |
dc.description.abstract | Copper oxide and niobium pentoxide were supported on silica–alumina with 2, 5, 10, 15 and 25 mass% loadings and 1:1 mass ratio of CuO:Nb2O5. XRD and BET measurements confirmed that monolayer coverage is reached with loadings between 5–10 mass%(~308 m2 g–1). The DRIFTS spectra of pyridine adsorbed catalysts showed bands associated with Bro¨nsted, Lewis and a combination of both acidic sites. Thermal analysis and liquid phase microcalorimetry provided the parameters for the best catalyst (10 mass%), which has the highest number of acidic sites (0.38 mmol g–1) and enthalpies of interaction with pyridine for Bro¨nsted and Lewis sites (DH1 = –107.5 and DH2 = –64.4 kJ mol–1, respectively). | pt_BR |
dc.language.iso | en | pt_BR |
dc.subject | Copper oxide | pt_BR |
dc.subject | Niobium pentoxide | pt_BR |
dc.subject | Liquid phase microcalorimetry | pt_BR |
dc.subject | Acidic characterization | pt_BR |
dc.subject | Supported catalyst | pt_BR |
dc.title | Acidic Characterization of Copper Oxide and Niobium Pentoxide Supported on Silica–Alumina | pt_BR |
dc.title.alternative | Catalysis Letters | pt_BR |
dc.type | Artigo de Periódico | pt_BR |
dc.identifier.number | v. 119 | pt_BR |
Aparece nas coleções: | Artigo Publicado em Periódico (Química) |
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