Articles
  • Effect of the TEOS/Al(i-pro)3 mol ratio in the composition on the crystal morphology of zeolites 
  • Ik Jin Kima,*, Wei Zhaoa, Xiaoou Fanc, Jeong Ho Changb and Ludwig J. Gaucklerc
  • a Institute for Processing and Application of Inorganic Materials (PAIM), Dept. of Materials Science and Engineering, Hanseo University, Seosan 356-706, Korea b Korea Institute of Ceramic Engineering and Technology(KICET), 233-5, Gasan-Dong, Guencheon-Gu, Seoul, 153-801, Korea c Nonmetallic Inorganic Materials, Department of Materials, ETH Zurich, Switzerland
Abstract
The interest is focused on the control of crystal morphology of single phase zeolite nanocrystals from cube, LTA to octahedron, Faujasite by the mol ratio of TEOS /Al(i-pro)(3) in the mother solution, a Al(i-pro)(3) : 2.2 TEOS: 2.4-5.7 TMAOH: 0.3 NaOH : 200 H2O compositions. Well- controlled single nanocrystals of a high quality zeolite LTA with a size of 264 nm and sodalite with a size of 30-50 nm were synthesized by the compositions having a TEOS /Al(i-pro)(3) : 2.2 and 5.2, respectively. The synthesized crystals were characterized by scanning electron microscopy (SEM). high resolution transmission electron microscopy(HRTEM), X-ray powder diffraction(XRD), and dynamic light scattering (DLS).

Keywords: zeolite; LTA; Faujasite; Sodalite; nanocrystals; morphology; particle size

This Article

  • 2010; 11(2): 158-163

    Published on Apr 30, 2010

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