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Extraction of Gd(III) with N, N, N′, N′-Tetrabutyl-3-oxa-diglycolamide in Different Diluents

Yan Zhang

Open publisher page 2 citations

Abstract

The extraction performance and mechanism of Gd (Ⅲ) with N, N, N′, N′-tetrabutyl-3-oxa-diglycolamide (TBDGA) were studied in different diluents from nitric acid solution. The influence of nitric acid concentration, TBDGA and temperature on the extraction was investigated. The order of the extraction ability of TBDGA in various diluents is as follows: XyleneCCl4TolueneCHCl3. The extraction distribution ratio of Gd (Ⅲ) increases with the increase in the concentration of nitric acid. The same extraction mechanism is suggested in different working diluents and the extraction species is Gd (NO3)3·3TBDGA. The distribution ratio decreases with the increase in the temperature and the extraction reaction is exothermic. The IR spectra results of the extracted species indicate that the carbonyl oxygen of TBDGA is coordinated with Gd(Ⅲ).

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What this paper is about

The extraction performance and mechanism of Gd (Ⅲ) with N, N, N′, N′-tetrabutyl-3-oxa-diglycolamide (TBDGA) were studied in different diluents from nitric acid solution. The influence of nitric acid concentration, TBDGA and temperature on the extraction was investigated. The order of the extraction ability of TBDGA in various diluents is as follows: XyleneCCl4TolueneCHCl3. The extraction distribution ratio of Gd (Ⅲ) increases with the increase in the concentration of nitric acid. The same extraction mechanism is suggested in different working diluents and the extraction species is Gd (NO3)3·3TBDGA. The distribution ratio decreases with the increase in the temperature and the extraction reaction is exothermic. The IR spectra results of the extracted species indicate that the carbonyl oxygen of TBDGA is coordinated with Gd(Ⅲ).

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Available abstract

The extraction performance and mechanism of Gd (Ⅲ) with N, N, N′, N′-tetrabutyl-3-oxa-diglycolamide (TBDGA) were studied in different diluents from nitric acid solution. The influence of nitric acid concentration, TBDGA and temperature on the extraction was investigated. The order of the extraction ability of TBDGA in various diluents is as follows: XyleneCCl4TolueneCHCl3. The extraction distribution ratio of Gd (Ⅲ) increases with the increase in the concentration of nitric acid. The same extraction mechanism is suggested in different working diluents and the extraction species is Gd (NO3)3·3TBDGA. The distribution ratio decreases with the increase in the temperature and the extraction reaction is exothermic. The IR spectra results of the extracted species indicate that the carbonyl oxygen of TBDGA is coordinated with Gd(Ⅲ).

Key concepts: Diluent, Nitric acid, Extraction (chemistry), Chemistry, Exothermic reaction, Nuclear chemistry, Inorganic chemistry, Chromatography

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