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化学学报
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化学学报 ›› 2003, Vol. 61 ›› Issue (3): 345-349. 上一篇    下一篇

研究论文

混合表面活性剂与调节pH值法高效合成MCM-48

翟尚儒;张晔;吴东;孙予罕   

  1. 中国科学院山西煤炭化学
  • 发布日期:2003-03-15

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

Zhai Shangru;Zhang Ye;Wu Dong;Sun Yuhan   

  1. State Key Laboratory of Coal Conversion,Institute of Coal Chemistry, Chinese Academy of Sciences
  • Published:2003-03-15

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被引次数

64 | 10

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- 100(TX-100)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，同时采用剂使模板剂的利用效率达到了6.0TEPOS／1.0 Surf．并通过XRD、N_2-吸附／脱附和FT-IR等测试手段对产物进行了表征.

关键词: 硅酸酯, 十六烷基三甲基溴化铵, 水热反应, 模板剂, X射线衍射分析, 吸附, 解吸, 傅里叶变换, 红外分光光度法

Mesoporous 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 hydro-thermal 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, N2 adsorption-desorption isotherms and FT-ffi methods.

Key words: TEOS, CTAB, HYDRO-THERMAL REACTION, TEMPLATE AGENT, XRD, ADSORPTION, DESORPTION, FT, IR

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