Articles
  • Synthesis and characterization of TMA-A zeolite nanocrystals 
  • Young Mi Kim, Seok Ju Lee and Ik Jin Kim*
  • Institute for Processing and Application of Inorganic Materials (PAIM), Dept. of Materials Science and Engineering, Hanseo University, Seosan 356-706, Korea
Abstract
Well-controlled cubic nanocrystals of TMA-A zeolite with a size of 60 similar to 100 nm were synthesized by a hydrothermal methodin a solution with a A1(i-pro)(3): 2.2 TEOS: 2.4 TMAOH: 0.3 NaOH: 200H(2)O composition. The single TMA-A nanocrystals has an average lattice constant of 24.61 angstrom and a surface area of 742.36 M-2/g. A thermal treatment of the TMA zeolite crystals resulted in their becoming amorphous above 900 degrees C. Environmental scanning electron microscopy (ESEM), high resolution transmission electron microscopy (HRTEM), X-ray powder diffraction (XRD), Fourier transform infrared (FT-IR) spectroscopy, and a DTA/TGA and BET analysis were used to characterize the initial materials and the products obtained after various heat treatments.

Keywords: TMA-A zeolite; nanocrystal; morphology; heat treatment; phase transformation

This Article

  • 2007; 8(2): 103-105

    Published on Apr 30, 2007

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