Abstract:
In this paper, high quality SBA 15 samples were prepared by using the triblock copolymer P123 as structure directing agent, tetraethylorthosilicate (TEOS) as silicon source under different acidic conditions. The influences of adding inorganic salts (Na+, K+, Br-, I-, SO2-4, H2PO-4) on the synthesis of mesoporous materials were investigated. The XRD patterns and N2 adsorption desorption isotherms show that samples still preserved the ordered hexagonal structure and high BET surface area after adding inorganic salts. The species and amounts of inorganic salts influenced obviously the morphologies and pore channels of SBA 15.