Síntesis y caracterización de sílicas mesoestructuradas funcionalizadas con grupos acidosulfónicos

hexagonal (mcm-41, sba-15, and hms) and cubic (mcm-48) mesostructured silicas were synthesized and functionalized with the propylsulphonic acid group, by grafting and co-condensation methods. structural conformation, physical-chemistry characterization, and morphology of the materials was performed by xrd, ft-ir, tga, and sem techniques. higher functionalization degrees were reached by co-condensation method, for mcm-48 and sba-15 mesophases. these higher functionalization degrees lead to less thermally and structurally stable materials than those obtained by the grafting method.