Double-layer and solvation forces measured in a molten salt and its mixtures with water

Horn, R. G., Evans, D. F. and Ninham, B. W. 1988, Double-layer and solvation forces measured in a molten salt and its mixtures with water, Journal of physical chemistry, vol. 92, no. 12, pp. 3531-3537, doi: 10.1021/j100323a042.

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Title Double-layer and solvation forces measured in a molten salt and its mixtures with water
Author(s) Horn, R. G.
Evans, D. F.
Ninham, B. W.
Journal name Journal of physical chemistry
Volume number 92
Issue number 12
Start page 3531
End page 3537
Total pages 7
Publisher American Chemical Society
Place of publication Washington, D.C.
Publication date 1988-06
ISSN 0022-3654
Keyword(s) solvation forces
molten salt
Summary Measurements have been made of the force between molecularly smooth mica surfaces immersed in ethylammonium nitrate, which is a molten salt at room temperature, and in mixtures of this salt with water across the concentration range from 10 -4 M to that of the pure salt, which is 11.2 M. At low concentrations the salt behaves as a typical 1:1 electrolyte, and we measure an electrical double-layer force whose range decreases with increasing salt concentration. At high concentrations, above about 1 M, the double-layer force becomes so weak and short-ranged that it is completely dominated by a solvation force extending up to 5 nm. In the pure molten salt the solvation force is an oscillatory function of surface separation comparable to that measured in simple nonpolar liquids. No monotonic component of solvation force is found.
Language eng
DOI 10.1021/j100323a042
Field of Research 029999 Physical Sciences not elsewhere classified
Socio Economic Objective 970102 Expanding Knowledge in the Physical Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©1988, American Chemical Society
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