棒状有序纳米介孔二氧化硅的合成  

Synthesis of Rod-like Ordered Mesoporous Silica using Cetylpyridinium Chloride as Template and Formamide as Co-solvent

作　　者：党文修[1] 韩书华[2] 亓贯林[1] 李晶[1] 王仁亮[2] 

机构地区：[1]山东警察学院,济南250014 [2]山东大学胶体与界面化学教育部重点实验室,济南250010

出　　处：《化学通报》2006年第6期430-433,共4页Chemistry

基　　金：清华大学新型陶瓷与精细工艺国家重点实验室(KF0101);山东警察学院科研基金(Y2005L02)资助项目

摘　　要：以十六烷基氯化吡啶为模板剂,甲酰胺为共溶剂,在室温酸性条件下合成了棒状有序纳米介孔二氧化硅,并用扫描电镜(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,棒状产物形貌规整,形态均一,长度约30～50μm,直径约5μm,具有MCM41的有序六方孔道结构;煅烧后的样品显示典型的Ⅳ型吸附等温线和H1型滞后环,孔径分布很窄,BJH最可几孔径为2.15nm,BET表面积高达1335m2·g-1。Using cetylpyridinium chloride as the template and formamide as the co-solvent, rod-like ordered mesoporous silica was synthesized at room temperature and in acidic solution. Scanning electron microscope （SEM）, small angle X-ray diffraction （SXRD）, and nitrogen adsorption techniques were used to characterize the as-synthesized and calcined samples. Results showed that the regular uniform rod-like shapes were obtained, and the length of the product was from 30μm to 50μm with diameter about 5μm. The samples had hexagonal mesostructure analogous to MCM-41 and relatively narrow pore-size distributions （BJH）. There existed a type Ⅳ adsorption isotherm and an H1 hysteresis loop in N2 adsorption-desorption curves. Besides, BET surface areas of the samples were up to 1335m2·g^-1.

关 键 词：有序介孔材料 二氧化硅 形貌 模板合成 

分 类 号：O613.72[理学—无机化学] TQ424.25[理学—化学]