Abstract
The hydrothermal synthesis of MCM-48 molecular sieves with CTAB and TEAOH as dual template agents and alkaline silica sol as silicon source has been systematically studied. The samples prepared at different crystallization temperature and time were analyzed by XRD, IR, nitrogen adsorption and desorption. The result shows that the best crystallization temperature and time are 100°C and 48h, respectively. According to BJH algorithm, the specific surface area of the sample is 1088 ~ 1669 m2/g, the pore size is 2.48 ~ 2.54 nm, and the pore volume is 1.2064 ~ 1.263 0cm3/g. Because it has high specific surface area, it can be widely used in catalytic adsorption, environmental engineering, biomedicine and other fields. Keywords: MCM-48; mesoporous molecular sieve; high specific surface area; dual template agents; alkaline silica sol
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