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Evolution of Fe3+from Framework to Extra-Framework Species in Fe-Silicate as a Function of the Template Burning Temperature
1997
Journal de Physique IV : Proceedings
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We report a XAFS study of the Fe3+ local environment in Fe-silicalite as a function of the template burning temperature. We investigate the structural changes of the zeolitic structure, upon thermal treatments and interaction with NH3. Our XAFS results show that, before template b-g, Fe3+ are in tetrahedral symmetry with 4 oxygens at 1.85 A, while after template removal and in vacuum conditions, they exhibit a distorted tetrahedral symmetry wth 3 oxygens at 1.87 A, and one at 2.10 A, dosage of
doi:10.1051/jp4:1997275
fatcat:rry6yugkfzfyroxwsy322bi3aq