Synthesis of mesoporous silica with novel structures using rigid bolaform ammonium surfactants

S. Shen, Q. Lu, F. Gao, Y. Yan, C. Yu, B. Tu, D. Zhao

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3 Citations (Scopus)

Abstract

Mesoporous silica with a novel structure (FDU-11) has been prepared for the first time by using a rigid bolaform tetra-head-group quaternary ammonium surfactant: [(CH3)3NCH2CH2CH 2N(CH3)2CH2(CH2) 11OC6H4C6H4O(CH 2)11CH2N(CH3)2CH 2CH2CH2N (CH3)3] 4+·4Br- under an alkaline condition. X-ray diffraction (XRD) and transmission electron microscope (TEM) studies show that the mesoporous silica FDU-11 may have a low symmetric tetragonal mesostructure with P4/mmm space group. N2 sorption isotherms show that calcined mesoporous silica FDU-11 has the BET surface area of 281 m2/g, pore size of 2.05 nm and the pore volume of 0.36 cm3/g. A phase transformation from FDU-11 into another unknown mesoporous silica structure by a hydrothermal treatment is observed, suggesting the intermediate nature of the FDU-11 mesophase.

Original languageEnglish
Pages (from-to)528-532
Number of pages5
JournalStudies in Surface Science and Catalysis
Volume154 A
Publication statusPublished - 1 Jan 2004
Externally publishedYes

Keywords

  • Mesoporous silica
  • Structure
  • Surfactant
  • Synthesis

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