Síntese de Imina Suportada a partir da Sílica Funcionalizada com APTES e Óleo Essencial de Eucalyptus citriodora

Abstract

This work presents methodologies for the synthesis of imines from the reaction of silica functionalized with NH2 groups from the 3- aminopropiltrietoxisilano, APTES, with the essential oil of Eucalyptus citriodora, which has among other constituents citronellal as the major component. The functionalized silica was obtained by sol-gel process using the tetraetilortosilicato, TEOS, as the inorganic precursor that enables the formation of silicate materials. The silica modified with APTES and imine was characterized by solid characterization techniques such as FT-IR, SEM, BET and TGA in order to identify the supported imine formation and understand the factors that influence its synthesis. According to the results obtained it was observed that the formation of the imine could be improved when there is first an interaction between the reagent pure and essential oil of Eucalyptus citriodora in acid medium, followed by the addition of inorganic precursor. The imines supported can be applied as intermediates inorganic reactions in heterogeneous medium as well as stabilizers for polymers.