Navegando por Autor "Costa, Nathália Tavares"

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    Amphiphilic niobium oxyhydroxide as a hybrid catalyst for sulfurremoval from fuel in a biphasic system.
    (2014) Oliveira, Luiz Carlos Alves de; Costa, Nathália Tavares; Pliego Junior, Josefredo Rodriguez; Silva, Adilson Cândido da; Souza, Patterson Patrício de; Patrício, Patrícia Santiago de Oliveira
    Here, we show that a new niobium oxyhydroxide, NbO2OH, can be synthesized and modified with asurfactant to be used as a heterogeneous catalyst for oxidative desulphurization. The material was treatedwith hydrogen peroxide to generate oxidizing groups (peroxo species) on the surface. Furthermore, thismaterial was converted to a family of solid catalysts that can stabilize water/oil emulsions and catalyzereactions at the liquid/liquid interface by anchoring a surfactant to the catalyst. The material was thenable to efficiently remove a sulfurous compound under mild conditions.