MCM—48分子筛的高效合成途径  

A High- yielding Synthesis of MCM-48

作　　者：王树国[1] 吴东[1] 孙予罕[1] 钟炳[1] 

机构地区：[1]中国科学院山西煤炭化学研究所

出　　处：《化学学报》2001年第7期1150-1152,共3页Acta Chimica Sinica

基　　金：国家自然科学基金，国家重点基础研究发展计划(973计划)

摘　　要：以正硅酸乙酯(TEOS)为硅源,十六烷基三甲基溴化铵(CTAB)为模板剂,用水热合成法合成MCM-48,在合成过程中通过降低pH值等方法可以使得MCM-48的产率显著提高,当pH＝7时,产率达到97%.XRD和物理吸附表明合成的介孔分子筛具有高比表面积(BET,～1000m2/g)和规整的孔道结构且孔径集中在2.6 nm左右.Using tetraethylorthosilicate (TEOS) as silica source and cetyltrimethylammonium bromide (CTAB) as. template, MCM - 48 mesoporous molecular sieves were synthesized by hydrothermal methods. The yield of MCM - 48 was pH - dependant, with lower pH leading to higher yields. At pH 7, the yield was as high as 97%. XRD and N-2 adsorption - desorption isotherm were used to characterize the products. The MCM - 48 prepared this way showed high specific surface areas and ordered channel systems.

关 键 词：MCM-48 产率 分子筛 正硅酸乙酯 模板剂 水热合成 十六烷基三甲基溴化铵 

分 类 号：TQ424.25[化学工程]