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Korean Journal of Chemical Engineering

, Volume 21, Issue 6, pp 1224–1230 | Cite as

Rapid synthesis of mesoporous silica by an accelerated microwave radiation method

  • Myung-Geun Song
  • Jong-Yun Kim
  • Sung-Ho Cho
  • Jong-Duk Kim
Article

Abstract

Microwave-hydrothermal processes for the synthesis of mesoporous silica were investigated with different pathways and mixture conditions at 373 K, and the corresponding structures to the hydrothermal method were synthesized within a very short crystallization time. 2-D hexagonally ordered arrays of MCM-41 materials via the direct electrostatic assembly pathway of ST and mediated templating pathways of S+X-I+ with CTAB were synthesized, and cubic mesophase of MCM-48 was also prepared within 2 hrs of microwave heating without adding alcohol. Nonionic surfactants with ethylene oxide (EO) moiety as structure-directing agents were used for the preparation of ordered array of hexagonal or cubic mesostructured silica via the charge matching principle of (S0H+)(X-I+). Although the detailed roles of microwaves may differ for each process, microwaves accelerate the formation of multiply charged silicate oligomers, initiating mesophase assembly. Therefore, the use of microwave radiation can transfer energy uniformly and quickly, and complete the syntheses of mesostructured materials within a short time

Key words

Mesoporous Silica Microwave Radiation Nonionic Surfactant Dielectric Heating Rapid Synthesis 

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Copyright information

© Korean Institute of Chemical Engineering 2004

Authors and Affiliations

  • Myung-Geun Song
    • 1
  • Jong-Yun Kim
    • 2
  • Sung-Ho Cho
    • 1
  • Jong-Duk Kim
    • 1
  1. 1.Department of Chemical and Biomolecular Engineering, and Center for Energy and Environment EngineeringKorea Advanced Institute of Science and TechnologyDaejeonKorea
  2. 2.LG Household & Health Care Research ParkDaejeonKorea

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