Abstract Extraction behavior of Np 4+ and Pu 4+ was investigated using several tetraalkylsubstituted diglycolamide (DGA) extractants such as N , N , N ′, N ′-tetrapentyl-diglycolamide (TPDGA), N , N , N ′, N ′-tetrahexyl diglycolamide (THDGA), N , N , N ′, N ′-tetraoctyl diglycolamide (TODGA), and N , N , N ′, N ′-tetradecyl diglycolamide (TDDGA). The organic phases used were 0.1 M solutions of the diglycolamide extractants in n -dodecane modified with 30% iso -decanol for avoiding third phase formation while the aqueous phases contained dilute nitric acid solutions spikes with the radiotracers. The stoichiometry of the extracted species was ascertained by ligand concentration variation experiments and was found to be M(NO 3 ) 4 · 2L, where M was Np and Pu and L was the substituted DGA ligand. In general, the extraction equilibrium constant (log K ex ) values for both Np 4+ and Pu 4+ showed an increasing trend with increasing alkyl group chain length and the log K ex values were higher for Pu 4+ as compared to those for Np 4+ . While for Np 4+ , the K ex values were 7.03 ± 0.04 for TPDGA which increased steadily up to 7.98 ± 0.05 for TDDGA, for Pu 4+ , the respective value for TPDGA was 7.32 ± 0.05 which increased to 7.78 ± 0.03 for TDDGA. Thermodynamic parameters were also determined for the two-phase extraction equilibrium reaction.

R. B. Gujar

G. B. Dhekane

P. K. Mohapatra

Radiochimica Acta

RADIOCHIMICA ACTA 出版涵盖核科学和技术化学方面的手稿。

The journal "Radiochimica Acta" publishes manuscripts covering research in nuclear science and technology as well as chemistry.

《Radiochimica Acta》期刊出版涵盖核科学与技术及化学领域的研究手稿。

Category	Quartile
化学	3
化学, 无机化学与核化学	4
化学, 核科学技术	4

Liquid–liquid extraction of Np⁴⁺ and Pu⁴⁺ using several tetra-alkyl substituted diglycolamides

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Journal Info

Category	Quartile
NUCLEAR SCIENCE & TECHNOLOGY	3

Liquid–liquid extraction of Np4+ and Pu4+ using several tetra-alkyl substituted diglycolamides

ivySCI AI Smartly Parses PDF, Answers Researchers' Questions, and Helps You Understand Papers in Seconds

Journal Info

Liquid–liquid extraction of Np⁴⁺ and Pu⁴⁺ using several tetra-alkyl substituted diglycolamides