X-ray diffraction, FTIR and 1H MAS NMR investigations during fast dynamic exchange between Na+OH─ ion pairs and H2O molecules in sodalites - Archive ouverte HAL
Article Dans Une Revue Journal of Inorganic and General Chemistry / Zeitschrift für anorganische und allgemeine Chemie Année : 2009

X-ray diffraction, FTIR and 1H MAS NMR investigations during fast dynamic exchange between Na+OH─ ion pairs and H2O molecules in sodalites

Thorsten M. Gesing
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Résumé

We report sodalite phases formed at the intermediate stages during the fast dynamic exchange between Na+OH─ ion pairs and H2O molecules while transforming a series of hydro-hydroxy sodalites into hydro sodalites. The applicability of an ion-exchange technique has been addressed, which is much faster than the previously employed exchange methods. The results of X-ray diffraction, FTIR and 1H MAS NMR spectroscopy are complimentary showing the successive steps of the exchanges. The X-ray data Rietveld refinements demonstrate that the framework composition did not change at the intermediate stages of the Na+OH─/H2O exchange, thus distinguished the ion-exchange from re-crystallization.

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Dates et versions

hal-00504926 , version 1 (22-07-2010)

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M. Mangir Murshed, Thorsten M. Gesing. X-ray diffraction, FTIR and 1H MAS NMR investigations during fast dynamic exchange between Na+OH─ ion pairs and H2O molecules in sodalites. Journal of Inorganic and General Chemistry / Zeitschrift für anorganische und allgemeine Chemie, 2009, 635 (13-14), pp.2147. ⟨10.1002/zaac.200900061⟩. ⟨hal-00504926⟩

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