中文摘要：

以十六烷基氯化吡啶（C16P3Cl）为模板剂，原硅酸四乙酯（TEOS）为硅源，乙酰胺为助剂，在酸性条件下合成了六方纳米介孔二氧化硅纤维，并使用扫描电镜（SEM）、小角X射线衍射（SXRD）和N2气体吸附仪对其进行了表征。结果表明合成样品呈六方纤维外形，纤维直径约3～5μm，纤维长度约几十微米：六方纤维具有MCM-41的六方孔道结构；煅烧后的样品显示典型的Ⅳ型吸附等温线和H，型滞后环，孔径分布较宽，具有双孔道结构，BJH最可几孔径为2．96／3．50nm，BET表面积为1060m^2·g^-1。

英文摘要：

Using cetylpyridinium chloride as the template, tetraethyl orthosilicate as the silica precursor, and acetamide as the cosolvent, hexagonal mesoporous silica fibers were synthesized in acidic solution. Scanning electron microscope, small angle X- ray diffraction, and nitrogen adsorption techniques were used to characterize the samples. Results showed that the hexagonal shape fibers with ca. 3 - 5/μm diameter were obtained. The samples had hexagonal mesostructure analogous to MCM- 41. There existed a type Ⅳ adsorption isotherm and an H2 hysteresis loop in N2 adsorption - desorption curves. BET surface areas of the samples were 1 060 m^2·g^- 1 and the most probable pore diameter （ using BJH method） was 2.96/3.50 nm.