New Infrared Study of Water in Ion Exchange Resins

Abstract

The water present in cation and anion exchange resins for a series of counter-ions was examined spectroscopically using the 1.9 /l water band. The spectrum of the water in the resins dried to constant weight was characteristic for the counter-ion present. The changes in the wavelength of the maximum absorbance was compared to the behaviour of the spectrum of ions in solution. The spectra of these resins were also related to the hydration numbers of various ions.

Near Infrared Spectra of Water in Aqueous Solutions of Organic Salts. A Solvation Study of Bu4NBr, , and

“…We report here a simple differential analysis of the near-infrared spectra of aqueous solutions, which provides a sensitive method for comparing the effect of temperature to that of hydrophobic solutes on the solvent spectrum. Near-infrared spectroscopy has often been employed as a means of studying solvent modifications in aqueous solutions (3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13). 'NRCC Postdoctorate Fellow, 1969-1971 Discussion of the methods can be found in several recent papers and review articles (14,15).…”

Ion Exchanger-Solvent Interactions: Properties and Methodology

“…242 As previously stated, hydration in cation and anion exchangers can be examined by IR. Recently, this phenomenon was studied for exchangers in a variety of charged forms at various water levels using the band at 1.9 £<m. 248 The data were compared to IR data for solutions of corresponding ions, and hydration numbers for the exchangers were calculated.…”