Molecular dynamics of ion exchangers SG-1M and SGK-7 determined from neutron spectroscopy data

Lisichkin, Yu. V.; Сахарова, Л. А.; Tumanov, A. A.

doi:10.1134/s1063774507040086

Cited by 2 publications

(2 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The essential involvements of solvation have long been recognized in this area. [14][15][16][17][18][19][20][21][22][23][24] Therefore, the solvation or crystalline sizes of ions have often been mentioned in the discussion of ion recognition selectivity. The recent advancements of molecular architectures have allowed the preparation of highly controlled nanospaces, into which ions would be partitioned in solvated or desolvated forms.…”

Section: Introductionmentioning

confidence: 99%

“…However, since direct experimental studies of ions are, in general, difficult when small spaces should be probed, the ion selectivity is mostly discussed on the basis of molecular simulations. 9,[24][25][26][27] We have been involved in the elucidation of the molecular origins of selectivity in separation of ions, and have employed chromatography, electrophoresis, X-ray absorption fine structure (XAFS), and ion-transfer voltammetry to evaluate the structures of ions and the thermodynamics concerned with separation.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Hydration of Ions in Confined Spaces and Ion Recognition Selectivity

2009

View full text Add to dashboard Cite

The hydration of ions in confined spaces, such as the interior of ion-exchange resins, micelles, and surface monolayers, is discussed on the basis of results obtained with X-ray absorption fine structure studies, electrophoresis, and ion-transfer voltammetry. The general trends are that anions are partly dehydrated therein, whereas cations are likely to keep their first hydration shells. For bromide ions, the hydration numbers under various circumstances have been determined. The extents of dehydration depend not only on the structure of the cationic sites electrostatically attracting bromide ions but also on whether the cationic sites are exposed to a solution or are effectively shielded from it. These findings will be useful for designing the systems for ionic recognition and separation.

show abstract