Nanomaterials for the recovery of compounds from renewable sources

Abstract

The functionalization of trans-2-hexen-1-ol alcohol from a natural source was studied in order to obtain highvalue-added products through the application of heterogeneous catalysis. For this, natural clays from the province of San Juan, Argentina were used, which were chemically modified in order to evaluate their catalytic activity in the oxidation reaction of the trans-2-hexen-1-ol alcohol. Thus, an ion exchange process and subsequent pilareado with titanium were performed. Solids were obtained which were characterized by XRD and adsorption-desorption isotherms of N2. Hydrogen peroxide was used as oxidant, acetonitrile as solvent and the reaction temperature was maintained at 70 °C. The results showed that when the solid were pillared, the substrate conversion increased and although the selectivity towards 2,3-epoxyhexanol was favored, high reaction yields for 2-hexenal were obtained(12%). Then, the substrate/oxidant molar ratio was varied. When using a molar ratio equal to 1, it was found that epoxide selectivity decreased, favoring the formation of 2-hexenal with a yield close to 20%.