ARGILAS ESMECTITAS MODIFICADAS COM COBALTO COLOIDAL UTILIZADAS COMO CATALISADORES NA DESTILAÇÃO CATALÍTICA DE GLICEROL

Abstract

In this work, we used four smectite clays (Sodium Imported, Brasgel, Chocolate and Green Loam) modified with colloidal cobalt [CoO(OH)], generating mixed nanostructured materials, known as SICo, BrCo, ChCo and VLCo. The starting materials and mixed were their chemical composition determined by energy dispersive spectroscopy (EDS) and flame atomic absorption spectrometry (FAAS). For the morphological characterization and structural techniques has been used for scanning electron microscopy (SEM), simultaneous thermogravimetric analysis (TGA/DTA), vibrational spectroscopy (FTIR), electronic spectroscopy (UV-Vis) and X-ray diffraction (XRD). As an application of mixed materials testing was conducted as catalyst in the hydrogenolysis of glycerol, a product of biodiesel production. The results show promising application when compared with the commercial catalyst based on ruthenium activated, leading to conversion to specific products, for example, when used SICo income was higher for the formation of acetol, while BrCo leads to formation of secondary alcohols.