The structure and morphology control of mesoporous silica under acidic conditions

Shunai Che, Yasuhiro Sakamoto, Osamu Terasaki, Takashi Tatsumi

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

The synthesis and crystallization mechanism of various mesoporous molecular sieves with varying morphology have been studied by the methods such as X-ray diffraction (XRD), scanning-electron microscope (SEM), elemental analyses and N2 adsorption-desorption. By adjustment of the synthesis conditions, two types of mesoporous materials with highly resolved XRD patterns and particular morphologies were obtained using cetyltriethylammonium bromide (CTEABr) in the presence of HCl. The g value of lyotropic crystal mesophases was decreased with heating, which led to formation of larger curvature mesophases. The large g value lyotropic crystal mesophases were formed with increase in the surfactant concentration and with decrease in the Si/surfactant ratio.

Original languageEnglish
Pages (from-to)207-218
Number of pages12
JournalMicroporous and Mesoporous Materials
Volume85
Issue number3
DOIs
Publication statusPublished - 2005 Nov 7

Keywords

  • Acidic synthesis
  • Mesoporous silica
  • Morphology
  • Nanoporous materials
  • SBA-1

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials

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