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Fast Dynamic Exchange between Na + OH – Ion Pairs and H 2 O Molecules in Sodalites
Author(s) -
Mangir Murshed M.,
Gesing Thorsten M.
Publication year - 2009
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.200900061
Subject(s) - sodalite , ion exchange , chemistry , crystallography , molecule , ion , x ray crystallography , rietveld refinement , analytical chemistry (journal) , diffraction , crystal structure , physics , zeolite , biochemistry , organic chemistry , chromatography , optics , catalysis
We report sodalite phases formed at the intermediate stages during the fast dynamic exchange between Na + OH – ion pairs and H 2 O 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 1 H 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 – /H 2 O exchange, thus distinguished the ion‐exchange from recrystallization.