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IJC-A Vol.49A(08) [August 2010] >


Title: Synthesis and characterization of gallosilicate halide sodalites using organic solvent
Authors: Borhade, A V
Wakchaure, S G
Keywords: Gallosilicates
Sodalites
Crystallization
Issue Date: Aug-2010
Publisher: CSIR
Abstract: The crystallization of gallosilicate sodalite containing halides (Cl, Br and I) in 30% ethanol have been investigated at low temperature (373 K) using one pot synthesis method. X-ray powder diffraction, IR, FAR IR, 29Si and 23Na MAS NMR, SEM and thermogravimetric data are used to characterize these sodalites. The crystal structures show cubic symmetry in a space group P3n. The crystal structures have been refined by Rietveld refinement method. The unit cell parameter, a = 8.9502, 8.9986 and 9.0779 Å and the corresponding Ga-O-Si angle are found to be 134.453, 135.252 and 136.887o for chloro, bromo and iodo sodalite respectively. The MAS NMR data confirm the alternating Ga and Si ordering of sodalite framework. TGA analysis shows stability of guest anions in the sodalite framework.
Page(s): 1047-1051
Source:IJC-A Vol.49A(08) [August 2010]

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