Author(s): Castanheiro, JE ; Machado, A ; Casimiro, M ; Ferreira, L ; Ramos, A ; Vital, J ; Fonseca, I
Date: 2016
Persistent ID: http://hdl.handle.net/10174/16950
Origin: Repositório Científico da Universidade de Évora
Subject(s): SBA-15; MCM-41; TEMPO; Oxidação
This work reports the covalent attachment of 4-hydroxy-2,2,6,6-tetramethylpiperidin-1-oxyl (4- hydroxy-TEMPO) on the mesoporous silicas MCM-41 and SBA-15, by using ,4-diisocyanatobutane as a binder. The catalysts were characterized by nitrogen adsorption/desorption, XRD, TEM, TGA, DSC and FTIR spectroscopy. Catalytic tests were performed on the liquid phase oxidation of benzyl alcohol and the secondary alcohol isoborneol by using tert-butyl hydroperoxide as oxidant. The catalysts showed good activity and stability in consecutive oxidation experiments with the same catalyst samples.
