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Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.50 [2012] >
IJPAP Vol.50(08) [August 2012] >
| Title: | Solvothermal synthesis and crystal structure of aluminogermanate halide sodalites using organic solvent |
| Authors: | Borhade, Ashok V
Dholi, Arun G
Tope, Dipak R
Wakchaure, S G |
| Keywords: | Aluminogermanate sodalite
Rietveld refinement
Organic solvent
Crystallization |
| Issue Date: | Aug-2012 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | Solvothermal
synthesis has been investigated for the crystallization of aluminogermanate
sodalite containing halide
(Cl, Br and I) in 50% ethyl alcohol at low temperature. It was found that 50%
ethanol+ 50% water is good solvent system for sodalite. X-ray powder
diffraction, IR, 27Al and 23Na MAS NMR, SEM and
thermogravimetry are used to characterize these sodalites. The crystal
structures show cubic symmetry in a space group P  3n and were refined by Rietveld refinement method. The unit
cell parameter, a = 9.0641, 9.1049
and 9.1874Å and the corresponding Al-O-Ge angles are found to be 133.702,
135.346 and 137.628° for
chloro, bromo and iodo sodalite,respectively. The MAS NMR study confirms
alternating Al and Ge ordering of sodalite framework. The thermal stability of
guest anions in the sodalite framework was studied by thermogravimetric
analysis.
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| Page(s): | 576-582 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-1041 (Online); 0019-5596 (Print) |
| Source: | IJPAP Vol.50(08) [August 2012]
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