Ti-POSS covalently immobilized onto mesoporous silica: A model for active sites in heterogeneous catalytic epoxidation

► Covalent anchoring of Ti-polyhedral oligomeric silsesquioxane on mesoporous SiO2. ► Evaluation of the anchoring of Ti-POSS species on SiO2 surface. ► Model compound for the selective epoxidation of alkenes over titanium-silica catalysts. ► Study of the chemical environment around the titanium active site.