Cubic Mesoporous Silica with Tailored Large Pores

摘要

MCM-48 silica was synthesized using GEMINI surfactant and its pore size was enlarged via a post-synthesis procedure in the presence of dimethyldecylamine (DMDA) as swelling agent. The effects of the amount of DMDA as well as the post-synthesis temperature on the pore size of the MCM-48 material were investigated. It was found that pore sizes up to 11.2 nm could be obtained. Generally, the pore size distributions were reasonably narrow and the pore volumes quite high (up to 2.6 cm~3/g). The present work demonstrated the possibility to tailor the pore sizes of the MCM-48 silica.