混合表面活性剂与调节pH值法高效合成MCM-48  

Efficient Synthesis of Mesoporous MCM-48 by Using Mixed Surfactants and pH Adjustment Method

作　　者：翟尚儒[1] 张晔[1] 吴东[1] 孙予罕[1] 

机构地区：[1]中国科学院山西煤炭化学研究所,煤转化国家重点实验室,太原030001

出　　处：《化学学报》2003年第3期345-349,共5页Acta Chimica Sinica

基　　金：国家自然科学基金 (No .2 99730 57);国家重点基础研究专项基金 (No.2 0 0 0 0 4 80 0 1 )资助项目

摘　　要：以正硅酸乙酯 (TEOS)为硅源、十六烷基三甲基溴化铵 (CTAB)与曲拉通X 10 0 (TX 10 0 )混合表面活性剂为模板剂 ,水热合成中孔MCM 48.在合成过程中通过调节溶液pH值可有效提高MCM 48的收率和水热稳定性 ,同时采用混合表面活性剂使模板剂的利用效率达到了 6 0TEOS/1 0Surf.并通过XRD、N2 吸附 /脱附和FTMesoporous molecular sieves MCM-48 were hydrothermally synthesized by using tetraethylorthosilicate (TEOS) as silica source and mixed surfactants of cetyltrimethylammonium bromide (CTAB) and Triton X-100 (TX-100) as co-template. The yields and hydrothermal stability of MCM-48 could be increased considerably by adjusting the pH values of the solutions which had been statically crystallized for a certain time. At the same time, the utilizing efficiency of the mixed surfactants was higher than that using CTAB alone as the template. The synthesized samples were characterized by XRD, N-2 adsorption-desorption isotherms and FT-IR methods.

关 键 词：调节 PH值 MCM-48 混合表面活性剂 中孔分子筛 模板剂 

分 类 号：TQ424[化学工程]