阳离子与非离子混合表面活性剂模板合成介孔SiO_2  

Synthesis of Meso-porous Silica Using Mixed Cationic-nonionic Surfactants as Templates

作　　者：卜林涛[1] 邵青[1] 戴乐蓉[1] 

机构地区：[1]北京大学物理化学研究所,北京100871

出　　处：《高等学校化学学报》2000年第6期852-854,共3页Chemical Journal of Chinese Universities

基　　金：国家攀登计划 !(批准号 :970 2 110 7);国家自然科学基金重大项目! (批准号 :2 9992 5 90 -4 )

摘　　要：Using the mixture of cationic surfactant cetyltrimethylammonium bromide(CTAB) and six nonionic surfactants as templates, meso porous silica was synthesized. The d space of silica templated by CTAB is 3.5 nm. The d spaces could be controlled by changing the ratio of nonionic to cationic surfactants and by increasing the length of nonpolar chain of nonionic surfactants in the mixed cationic nonionic surfactant templating systems. The pore dimension of silica in the mixed surfactants templating system is larger than that in CTAB system and a well ordered structure of pore array was maintained. [WT5HZ]Using the mixture of cationic surfactant cetyltrimethylammonium bromide(CTAB) and six nonionic surfactants as templates, meso porous silica was synthesized. The d space of silica templated by CTAB is 3.5 nm. The d spaces could be controlled by changing the ratio of nonionic to cationic surfactants and by increasing the length of nonpolar chain of nonionic surfactants in the mixed cationic nonionic surfactant templating systems. The pore dimension of silica in the mixed surfactants templating system is larger than that in CTAB system and a well ordered structure of pore array was maintained. [WT5HZ]

关 键 词：混合表面活性剂 液晶模板 介孔二氧化硅 合成 

分 类 号：O613.72[理学—无机化学]