Porous materials are frequently used as catalyst, catalyst support, and adsorbent as well, for their high surface areas or high active phase dispersions as well as fast mass transfer of the reactants and products to and from the catalytic sites, which are required from any active catalyst. Among them the mesoporous materials discovered by Mobil Company in 1992 received great attention for their very high surface area, monodispersed pore diameters in the range 2-50 nm, and a stereoregular arrangem...