以嵌段共聚物为结构导向剂的SBA-15和SBA-16的合成及表征  

Synthesis and Characterization of SBA-15 and SBA-16 Templated by Block Copolymers

作　　者：诸荣[1] 陈航榕[1] 施剑林[1] 严东生[1] 

机构地区：[1]中国科学院上海硅酸盐研究所高性能陶瓷和超微结构国家重点实验室

出　　处：《无机材料学报》2003年第4期855-860,共6页Journal of Inorganic Materials

基　　金：国家自然科学基金(50232050)

摘　　要：利用嵌段共聚物P123和F127分别在强酸性条件下合成了两种结构不同的介孔氧化硅材料:一维直孔道六方相的SBA-15和三维立方相的SBA-16,并通过XRD、N_2吸附-脱附、HTEM等手段对材料进行了研究。结果表明:商品化的嵌段共聚物作为结构导向剂合成的介孔氧化硅材料SBA-15和SBA-16孔道规整有序,比表面积分别达到765m^2·g^(-1)和930m^2·g^(-1),相应的最可几孔径分别为6.46nm和3.92nm,这有利于介孔材料向经济实用方向发展。Two different structures of mesoporous silica materials SBA-15 (P6mm) and SBA-16 (Im3m) were synthesized by using commercial block copolymers P123 and F127 as structure-directing agents correspondingly under acidic conditions. The characteristics of samples were investigated by using XRD, N(2) adsorption-desorption, and HTEM techniques. The results show that the resulted mesoporous materials SBA-15 and SBA-16 are highly ordered materials. Their highest BET surface areas are respectively around 765m(2).g(-1) and 930m(2).g(-1). The pore diameters are 6.46nm and 3.92nm correspondingly. This means the synthesized mesoporous materials have potential applications in functional and economic materials.

关 键 词：合成 嵌段共聚物 介孔氧化硅 

分 类 号：TB32[一般工业技术—材料科学与工程]