Vibrational Spectra of Molten Salts. II. Infrared Spectra of Some Divalent Metal Nitrates in Alkali‐Metal Nitrate Solutions

1967 ◽  
Vol 47 (5) ◽  
pp. 1747-1755 ◽  
Author(s):  
R. E. Hester ◽  
K. Krishnan
Keyword(s):  
Alkali Metal ◽  
Infrared Spectra ◽  
Vibrational Spectra ◽  
Molten Salts ◽  
Metal Nitrate ◽  
Divalent Metal ◽  
Metal Nitrates ◽  
Alkali Metal Nitrate ◽  
Nitrate Solutions

Interactions in aqueous alkali metal nitrate solutions

1968 ◽  
Vol 46 (6) ◽  
pp. 943-951 ◽  
Author(s):  
D. E. Irish ◽  
A. R. Davis
Keyword(s):  
Alkali Metal ◽  
Metal Nitrate ◽  
Aqueous Alkali ◽  
Nitrate Ion ◽  
Spectral Changes ◽  
Wide Range ◽  
Solvated Ions ◽  
High Concentrations ◽  
Alkali Metal Nitrate ◽  
Nitrate Solutions

Raman (R) and infrared (I) spectra of aqueous alkali metal nitrate solutions have been recorded at 25 °C for a wide range of concentrations. In dilute solution the nitrate ion is perturbed by solvent water; the effects attributed to cations are nonspecific. The solvated nitrate ion generates the following spectrum: 1404 cm−1 (I, R), 1348 cm−1 (I, R), 1049 cm−1 (R), 825 cm−1 (I), 719 cm−1 (I, R). In more concentrated solutions band positions, intensities, and especially half-widths show a marked concentration and cation dependence. Changes in band half-width with concentration have been related to hydrated radii of the cations and are discussed in terms of interaction of solvated ions. For solutions of lithium and sodium nitrate more concentrated than 7 M a splitting of the ν4(E′) mode of nitrate ion into components at 720 and 740 cm−1 has been detected. Contact between ions is believed to account for the spectral changes observed for these high concentrations although water is shown to still markedly influence the interaction.

Equilibrium and transport properties of Ca(NO3)2 + (Li,K)NO3 hydrate melts: Confirmation of a mixed-alkali effect

1981 ◽  
Vol 34 (9) ◽  
pp. 1853 ◽  
Author(s):  
AJ Easteal
Keyword(s):  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Alkali Metal ◽  
Water Content ◽  
Metal Nitrate ◽  
Mixed Alkali ◽  
Metal Nitrates ◽  
Mixed Alkali Effect ◽  
Alkali Metal Nitrate

Glass-transition temperature, density, electrical conductivity and viscosity have been determined as a function of the relative proportions of the two alkali metal nitrates in the hydrate melts �������������� 0.55[Ca(NO3)2,RH2O]+0.45[XLiNO3+(1-X)KNO3] where X is the mole fraction of LiNO3 relative to total alkali metal nitrate, with mole ratios (R) of water to Ca(NO3)2 of 4.090 and 6.545, at 298.15 K. For both series of melts, molar volume varies linearly with X, i.e. is an additive function of composition. Glass-transition temperature and molar conductivity show negative deviations from additivity, the magnitude of the deviations decreasing with increased water content. Fluidity isotherms show much smaller negative deviations from additivity and the magnitude of the deviations is approximately independent of water content. ��� By analogy with the properties of network oxide melts and glasses, the composition variation of the properties investigated for the hydrate melts is interpreted as being indicative of a significant mixed-alkali effect qualitatively similar to the effect which occurs in network oxide media. The hydrate melts are closely similar in their behaviour to fused anhydrous (Na,Tl)NO3 mixtures, and it is suggested that the observed trends in the properties of the hydrate melts have a similar origin to that which was postulated for the anhydrous melts.

Transfer Properties of Diglycine from Water to Aqueous Alkali Metal Nitrate Solutions

2015 ◽  
Vol 44 (12) ◽  
pp. 2383-2392
Author(s):  
Li Zhou ◽  
Chunli Liu ◽  
Liqun Fan ◽  
Jinhu Wang ◽  
Shumin Wang
Keyword(s):  
Alkali Metal ◽  
Metal Nitrate ◽  
Aqueous Alkali ◽  
Alkali Metal Nitrate ◽  
Transfer Properties ◽  
Nitrate Solutions
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