Please use this identifier to cite or link to this item: http://repositorio.ufla.br/jspui/handle/1/37123
metadata.artigo.dc.title: Nióbia sintética modificada como catalisador na oxidação de corante orgânico: utilização de H2O2 e O2 atmosférico como oxidantes
metadata.artigo.dc.title.alternative: Modified synthetic niobia as catalyst in the oxidation of organic dye: utilization of H2O2 and atmospheric O2 as oxidants
metadata.artigo.dc.creator: Carvalho, Kele T. G.
Silva, Adilson C.
Oliveira, Luiz C. A.
Gonçalves, Maraisa
Magriotis, Zuy M.
metadata.artigo.dc.subject: Niobia
ESI-MS
Oxidation process
metadata.artigo.dc.publisher: Sociedade Brasileira de Química (SBQ)
metadata.artigo.dc.date.issued: 2009
metadata.artigo.dc.identifier.citation: CARVALHO, K. T. G. et al. Nióbia sintética modificada como catalisador na oxidação de corante orgânico: utilização de H2O2 e O2 atmosférico como oxidantes. Química Nova, São Paulo, v. 32, n. 6, p. 1373-1377, 2009. DOI: 10.1590/S0100-40422009000600002.
metadata.artigo.dc.description.resumo: Indisponível
metadata.artigo.dc.description.abstract: In this work synthetic niobia was used to promote the oxidation of methylene blue dye in aqueous medium. The niobia was characterized by N2 adsorption/desorption, XRD and TG measurements. The presence of reactive species on the niobia surface strongly increased the oxidation rate of the methylene blue dye. The reaction mechanism was studied by ESI-MS suggesting that the oxidation of the organic dye involve oxidizing species generated mainly after previous treatment with H2O2. It can be observed that the catalyst is a good material in the activation of gas (atmospheric oxygen) or liquid (hydrogen peroxide) oxidant agent with a total discoloration of the dye solution after only 1 h of reaction.
metadata.artigo.dc.identifier.uri: http://repositorio.ufla.br/jspui/handle/1/37123
metadata.artigo.dc.language: pt_BR
Appears in Collections:DEG - Artigos publicados em periódicos



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