Synthesis of Si and Ti-Si-MCM-48 mesoporous materials with controlled pore sizes in the absence of polar organic additives and alkali metal ions

A new route for the synthesis of Si- and Si-Ti-MCM-48 has been developed which allows these materials to be obtained without using polar organic additives and alkali metal ions; this procedure not only produces more active and selective Ti-MCM-48 oxidation catalysts than those reported before, but also permits the synthesis of MCM-48 with controlled pore diameters.