Abstract
MCM-41 type spherical mesoporous silica material was synthesized, under basic conditions, in the presence of cationic surfactant as templating species. The cationic surfactants used in this experiment were octyltrimethylammonium bromide, dodecyltrimetylammonium bromide, cetyltrimethylammonium bromide, octadecyltrimethyammonium bromide and cetylpyridium bromide. Specific surface area of spherical MCM-41 was as high as $1500m^2/g$ and the pore size decreased with increasing alkyl chain length of surfactant.
MCM-41형의 메조포러스 구형 실리카 재료를 염기성 조건에서 양이온 계면활성제를 templating species로 사용하여 합성하였다. 본 실험에서 사용한 계면활성제로는 octyltrimetylammonium bromide, dodecyltrimetylammonium bromide, cetyltrimethylammonium bromide, octadecyltrimethyammonium bromide 및 cetylpyridium bromide이었다. 구형 MCM-41의 비표면적은 $1500m^2/g$나 되었으며 계면활성제의 알킬 사슬의 길이가 길어질수록 기공 크기는 증가하였다.
