Synergic extraction of lanthanoid(III) with 2-thenoyltrifluoroacetone and triphenylarsine oxide in benzene

N. Suzuki; A. Nakadate; H. Imura

doi:10.1007/bf02053723

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Journal of Radioanalytical and Nuclear Chemistry

Volume/Issue:: Volume 149: Issue 1

Synergic extraction of lanthanoid(III) with 2-thenoyltrifluoroacetone and triphenylarsine oxide in benzene

Authors:

N. Suzuki

N. Suzuki Tohoku University Department of Chemistry, Faculty of Science 980 Sendai (Japan)

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A. Nakadate

A. Nakadate Tohoku University Department of Chemistry, Faculty of Science 980 Sendai (Japan)

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H. Imura

H. Imura Tohoku University Department of Chemistry, Faculty of Science 980 Sendai (Japan)

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Pages:: 149–159

Online Publication Date:: 14 Aug 2005

Publication Date:: 17 May 1991

Article Category:: Research Article

DOI:: https://doi.org/10.1007/bf02053723

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Abstract

The synergic extraction of La(III), Eu(III), and Lu(III) with 2-thenoyltrifluoroacetone (Htta) and triphenylarsine oxide (tpao) in benzene has been studied. The extractability of lanthanoids, Ln(III), is significantly affected by the association of Htta with tpao in the organic phase. The associated species is Htta·tpao and the association constant is determined as 10^1.63. The intrinsic extraction equilibrium of Ln(III) is analyzed using the free concentration of Htta and tpao. The synergic enhancement is ascribable to the formation of the adduct complexes shown as Ln(tta)₃tpao and Ln(tta)₃(tpao)₂ in the present extraction system. The adduct formation constants determined are very large as expected from the high basicity of tpao.

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Journal of Radioanalytical and Nuclear Chemistry

Print ISSN:: 0236-5731

Online ISSN:: 1588-2780

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Journal of Radionalytical and Nuclear Chemistry
Language	English
Size	A4
Year of Foundation	1968
Volumes per Year	1
Issues per Year	12
Founder	Akadémiai Kiadó
Founder's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher	Akadémiai Kiadó Springer Nature Switzerland AG
Publisher's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245. CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible Publisher	Chief Executive Officer, Akadémiai Kiadó
ISSN	0236-5731 (Print)
ISSN	1588-2780 (Online)