“…The SBA-15 silica vector (SBA-15-2) was synthesized using P123 as the structure-directing agent with the reactant molar ratios: 0.017-P123j1.0-TEOSj6.0-HClj196.0-H 2 O (Mirji et al, 2006). In a typical preparation, P123 was dissolved in a mixture of water and HCl (2 M) with stirring for 2 h, after which, TEOS was added, and the system stirred at room temperature for a further 20 h. The resulting gel was then aged (373 K, 48 h).…”