Methacrylyloxypropyl-modified inorganic/organic hybrid mesoporous materials have been synthesized via an HCl-catalyzed sol-gel process in the presence of citric acid (CA) as a nonsurfactant template
which involves acombination of 3-(trimethoxysilyl)propyl methacrylate (MSMA) and tetraethoxysilane (TEOS) as precursor species.The CA nonsurfactant is removed by extraction with water
resulting in inorganic/organic hybrid mesoporous materials with high surface area (e.g.900 m2·g-1) and large pore volume (e.g.0.55 cm3·g-1).The surface area
pore volume and pore diameter increase slightly with increasing the content of CA.The products were characterized by XRD