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Oxidation of azo dyes in oil-in-water microemulsions catalyzed by metalloporphy...
Häger, Maria; Holmberg, Krister; Rocha Gonsalves, António M. d'A.; Serra, Arménio C.Hydrogen peroxide oxidation of two aqueous azo dyes, methyl orange and amaranth, catalyzed by manganese porphyrins, have been performed in an oil-in-water microemulsion based on a nonionic surfactant, C12E8. A lipophilic acid was used as cocatalyst in a variable amount. The oxidation was followed by UV spectroscopy. It was shown that the reactions performed in the microemulsion were rapid for both dyes and the ...
Data: 2001
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Origem: Estudo Geral - Universidade de Coimbra
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