关键词: 嵌段共聚物, 模板剂, 表面活性剂, 氧化硅, 吸附

Highly ordered cubic mesoporous silica SBA-16 with millimeter spherical morphology (2～4 mm in diameter) has been synthesized using triblock copolymer as templates in the presence of inorganic salts. The use of inorganic salts greatly improves the quality of the resulted mesostructure by increasing the self-assemble ability of organic species and results in the formation of millimeter spheres by enhancing the interaction at the inorganic/organic interface. The calcined millimeter SBA-16 spheres have a surface area of 750 m~2/g, a pore volume of 0.52 cm~3/g, and a large pore size of 7.8 nm. These millimeter spheres may be readily used in the separation of large molecules.

Key words: BLOCK COPOLYMER, TEMPLATE AGENT, SURFACTANTS, SILICON OXIDE, ADSORPTION