物理化学学报 >> 2004, Vol. 20 >> Issue (01): 65-69.doi: 10.3866/PKU.WHXB20040114

研究论文 上一篇    下一篇

模板剂对全硅MCM-41介孔分子筛结构的影响

刘雷;张高勇;董晋湘   

  1. 中国日用化学工业研究院表面活性剂国家工程中心,太原　030001; 太原理工大学精细化工研究所,太原　030024
  • 收稿日期:2003-06-30 修回日期:2003-09-25 发布日期:2004-01-15
  • 通讯作者: 董晋湘 E-mail:jxdong@public.ty.sx.cn

Effects of Different Templating Agent on the Structure of Silica MCM-41 Mesoporous Molecular Sieves

Liu Lei;Zhang Gao-Yong;Dong Jin-Xiang   

  1. China Research Institute of Daily Chemical Industry,Taiyuan　030001; Research Institute of Special Chemicals ,Taiyuan University of Technology,Taiyuan　030024
  • Received:2003-06-30 Revised:2003-09-25 Published:2004-01-15
  • Contact: Dong Jin-Xiang E-mail:jxdong@public.ty.sx.cn

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摘要： 分别采用十六烷基三甲基溴化铵和十六烷基三乙基溴化铵作为模板剂,硅溶胶为硅源,用水热晶化法在碱性（NaOH）介质中合成了MCM-41介孔分子筛样品.通过XRD、N2吸附-脱附、TG-DTA、IR等测试手段对这两种样品进行了对比表征分析.考察了两种不同模板剂对其晶体结构、比表面及孔径大小的影响.实验结果表明,相对于十六烷基三甲基溴化铵做模板剂,采用大头基的十六烷基三乙基溴化铵可以合成较大孔径和孔容（分别为4.72 nm和1.14 cm3•g-1）的MCM-41介孔分子筛,而且具有较窄的孔径分布,因此对于合成大孔径的介孔分子筛MCM-41,十六烷基三乙基溴化铵是一种很好的模板剂.

关键词: 介孔分子筛, MCM-41, 水热合成, 模板剂, 阳离子表面活性剂

Abstract: Using cetyltriethylammonium bromide and cetyltrimethylammonium bromide as templating agent respectively, and silicasol as silica source,the mesoporous molecular sieves MCM-41 were synthesized by hydrothermal method in basic media. The synthesized samples were characterized by XRD、N2 adsorption-desorption、TG-DTA and IR. The effects of different templating agent on the crystalline structure 、pore diameter and pore size distribution of synthesized silica MCM-41 were investigated. The experimental results show that the templated by cetyltriethylammonium bromide, compared with those templated by cetyltrimethylammonium bromide, have larger pore diameter and pore volume with 4.72 nm and 1.14 cm3•g-1 respectively and narrower pore size distribution. For the preparation of large pore mesoporous MCM-41, cetyltriethylammonium bromide is a more effective templating agent than cetyltrimethylammonium bromide.

Key words: Mesoporous molecular sieves, MCM-41, Hydrothermal synthesis, 　Templating agent, Cationic surfactant