Strong reduction of extra-framework iron ions was attempted by sodium azide to form metallic iron particles with dimensions of a few nanometers. Na-X and Na-Y zeolites were partially ion exchanged to 5 wt % Fe content. The iron-zeolites were mixed with sodium azide, evacuated at 550 K and heated to 800 K in nitrogen to form sodium vapour by decomposing NaN3. The sodium exerts strong reduction, a part of iron can be reduced to zerovalent state to form particles in the nanometer size range, as in situ Mossbauer spectroscopy, AC susceptibility, X-ray diffraction and transmission electron microscopy studies revealed. Simultaneous partial recrystallization of the zeolite is also observed.
|Number of pages||4|
|Publication status||Published - Jan 1 1999|
|Event||Proceedings of the 1998 4th International Conference on Nanostructured Materials (NANO '98) - Stockholm, Swed|
Duration: Jun 14 1998 → Jun 19 1998
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics