Comparative study of titanium-functionalized UiO-66: support effect on the oxidation of cyclohexene using hydrogen peroxide

A comparative study of the support effect in three different UiO-66-based MOFs - with Ti-IV supported as part of the node (UiO-66-Ti-ex), attached to the node (Ti-UiO-66), and on a catecholate organic linker (UiO-66-Cat-Ti) - is reported. The three MOFs were evaluated for their catalytic activity and selectivity in cyclohexene oxidation. Ti-UiO-66 exhibited greater catalytic turnover numbers than UiO-66-Cat-Ti and UiO-66-Ti-ex.