【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、N₂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765m²·g^-1和930m²·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。更多还原

【Abstract】 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, N2 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 765m2·g-1 and 930m2·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.更多还原