ON THE COMPLEX CHEMISTRY OF THE TERVALENT RARE-EARTH IONS. VI. A STUDY OF THE COMPLEX FORMATION BETWEEN GADOLINIUM AND GLYCOLATE IONS IN AN ANION EXCHANGER
The complex formation between gadolinium and glycolate ions in an anion exchanger phase was studied at 20 deg C, a resin with quaternary ammonium groups (Dowex 1 x 4) being used. The glycolate concentration of the resin was varied widely by exchange for perchlorate ions. The amount of water of the resin phase was determined and the ionic strength of the resin phase was calculated formally. The ionic strength of the water phase was approximately constant, 0.21 M. The glycolate concentration of the two phases was determined by oxidation with potassium permanganate in a solution made alkaline by sodium carbonate. It was found that the ligand number of the resin phase could not be calculated in the whole concentration range as the ionic strength probably varied too widely, owing to the dependence of the swelling upon the glycolate load on the exchanger. Approximate values of K beta /sub n//sub R/ where K is a constant, were determined, but it was not possible to compute K. The values of K beta /sub n// sub R/ (n = 1, 2, 3, 4) are of the same order of magnitude as the potentiometrically obtained complexity constants for a water solution. It seems probable that only the first anionic complex is formed in the resin phase. Complexity constants of the gadolinium-glycolate system are also reported for solutions with the ionic strengths 0.21 and 3.0 M. (auth)
- Research Organization:
- Univ. of Lund, Sweden
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-15-018033
- OSTI ID:
- 4017769
- Journal Information:
- Acta Chemica Scandinavica (Denmark) Divided into Acta Chem. Scand., Ser. A and Ser. B, Journal Name: Acta Chemica Scandinavica (Denmark) Divided into Acta Chem. Scand., Ser. A and Ser. B Vol. Vol: 15; ISSN ACSAA
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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