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Citation: Liu Lei, Zhang Gao-Yong, Dong Jin-Xiang. Effects of Different Templating Agent on the Structure of Silica MCM-41 Mesoporous Molecular Sieves[J]. Acta Physico-Chimica Sinica, ;2004, 20(01): 65-69. doi: 10.3866/PKU.WHXB20040114 shu

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

1.
China Research Institute of Daily Chemical Industry,Taiyuan　030001; Research Institute of Special Chemicals ,Taiyuan University of Technology,Taiyuan　030024

Received Date: 30 June 2003
Available Online: 15 January 2004

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.
- Mesoporous molecular sieves;MCM-41;Hydrothermal synthesis;　Templating agent;Cationic surfactant
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