Synergistic extraction of uranium(VI) with 1-phenyl-3-methyl-4-acylpyrazolone-5 and neutral extractants

Mao Jia-Jun; Jia Wei-Jie; Shao Xing-Zhi; Chen Yu-De

doi:10.1007/bf02040377

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Journal of Radioanalytical and Nuclear Chemistry

Volume/Issue:: Volume 147: Issue 2

Synergistic extraction of uranium(VI) with 1-phenyl-3-methyl-4-acylpyrazolone-5 and neutral extractants

Authors:

Mao Jia-Jun

Mao Jia-Jun Fudan University Department of Nuclear Science 200433 Shanghai (PR China)

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Jia Wei-Jie

Jia Wei-Jie Fudan University Department of Nuclear Science 200433 Shanghai (PR China)

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Shao Xing-Zhi

Shao Xing-Zhi Fudan University Department of Nuclear Science 200433 Shanghai (PR China)

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, and

Chen Yu-De

Chen Yu-De Fudan University Department of Nuclear Science 200433 Shanghai (PR China)

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Pages:: 287–295

Online Publication Date:: 14 Aug 2005

Publication Date:: 17 Feb 1991

Article Category:: Research Article

DOI:: https://doi.org/10.1007/bf02040377

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Abstract

The synergistic extraction of uranium(VI) from hydrochloric acid solution with five chelating agents: 1-phenyl-3-methyl-4-benzoylpyrazolone-5 (PMBP), 1-phenyl-3-methyl-4-acetylpyrazolone-5 (PMAP), 1-phenyl-3-methyl-4-(2-chlorobenzoyl)pyrazolone-5 (PMCBP), 1-phenyl-3-methyl-4-(p-nitrobenzoyl)pyrazolone-5 (PMNBP) and 1-phenyl-3-methyl-4-trifluoroacetylpyrazolone-5 (PMTFP) plus the neutral extractants tributylphosphate (TBP), dioctyl sulfoxide (DOSO) and trioctylphosphine oxide (TOPO) in chloroform has been investigated. The extraction coefficients have been found to be greater for such mixtures than the individual component. The formulas of the extracted species have been determined to be UO₂A₂B (where HA = chelating agent, B = neutral extractant). Extraction power of these chelating agents increases as follows: PMCBP>PMNBP>PMTFP=PMBP>PMAP. Synergistic extraction power of the neutral extractants increases as follows: TOPO>DOSO>TBP. The extraction equilibrium constants have been calculated. The mechanism of the synergistic extraction and possible structure of the extracted species are discussed.

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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)