摘要
在正己烷-三嵌段共聚物(EO20-PO70-EO20,P123)体系中合成了小孔径大孔容介孔泡沫(MCF)氧化硅材料。采用高分辨扫描电镜、透射电镜、N2吸附-脱附和小角XRD,对其孔道结构、型貌、比表面积、孔容等进行了表征。对合成条件的研究表明,在静置条件下水解TEOS合成的样品,其比表面积、孔径、孔容都比在搅拌下水解合成的样品明显增加,其中孔容可增加68%,达到2.32cm3/g。
Mesostructure cellar foam（MCF） materials with little pore size and big pore volume are prepared in an n-hexane-P123 system. High resolution SEM, TEM, N2 adsorption-deaorption, small angle XRD are employed to study the samples prepared under stirring or static conditions. The hydrolysis of TEOS under static condition results in a remarkable increases of specific area, pore size and pore volume. Particularly, the increment of pore volume rea- ches 68% and then an MCF material with pore volume up to 2. 32cm3/g has been successfully synthesized.
出处
《材料导报》
EI
CAS
CSCD
北大核心
2009年第22期93-95,共3页
Materials Reports
基金
重庆市教育委员会科学技术研究项目(KJ080703)
重庆市科委自然科学基金计划资助项目(CSTC
2008BB6061
CSTC
2009AB4012)
关键词
介孔材料
泡沫
正己烷
氧化硅
mesoporous materials, foam, n-hexane, silica
