Synergistic Extraction of Trivalent Lanthanoids with 3-Phenyl-4-benzoyl-5-isoxazolone and Various Sulphoxides

Sahu, Sushanta Kumar; Chakravortty, V.; Reddy, M. L. P.; Ramamohan, T. R.

doi:10.1524/ract.1999.85.34.107

Cited by 13 publications

(4 citation statements)

References 7 publications

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“…This is in accordance with the observation of Pai et al [111], that the weaker the chelate, the higher the established synergism in solvent extraction processes. In addition, about 10-to 40-fold enhancement has been observed in the extraction of the trivalent La, Eu, Lu, and Am ions with HP ligand and bis-2-ethylhexylsulphoxide [112], whereas with mixtures of HPBI and sulphoxides, an about 2-to 4-fold enhancement was observed in the extraction of trivalent Nd, Tb, and Tm ions [113]. Therefore, many studies have been carried out using a neutral unidentate ligand as the synergistic agent, such as crown ethers [105,114], organophosphorus compounds, sulfoxides [115,116], or alkylammonium salts.…”

Section: Synergism In Liquid-liquid Extraction Of Metal Ions With a C...mentioning

confidence: 96%

Thenoyltrifluoroacetone: Preferable Molecule for Solvent Extraction of Metals—Ancient Twists to New Approaches

Atanassova

2022

Separations

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A review of the investigations devoted to the solvent extraction processes of metal ions with a chelating ligand thenoyltrifluoroacetone (HTTA) is presented herein. It seems that this molecule has been preferred in the field for more than half a century, and that it is used very often as an extractant for almost all metals. The main objective of the present review is also to provide an overview of the synergistic solvent extraction of lanthanoids, particularly with the use of a β-diketone−neutral mixture. Based on the previous published results in the open literature, the extraction efficiency has been examined in detail and discussed further mainly in terms of the corresponding equilibrium constants among other outlined, so-important parameters. Major conclusions on the role of ligating groups of extractants towards the mechanism, an improved extraction enhancement, and selectivity are additionally provided. The fact that ionic liquids (ILs) appear to be replacing volatile diluents in the field of the liquid–liquid extraction of metals, again with the participation of this β-diketone, is not surprising. As is well known, a very efficient and simple way to determine the stoichiometry of the extracted species in the organic phase is by the simple use of the slope analysis method; however, it is sometimes difficult to perform, either because it somehow requests good solubility of the ligand or because obtained slopes are quite often far from integer values in ILs.

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Section: Synergism In Liquid-liquid Extraction Of Metal Ions With a C...mentioning

confidence: 96%

Thenoyltrifluoroacetone: Preferable Molecule for Solvent Extraction of Metals—Ancient Twists to New Approaches

Atanassova

2022

Separations

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“…and neutral donor extractants (e.g. nitrogen-containing compounds, [4][5][6] sulfoxides, 7,8 crown ethers, 3,[9][10][11] diglycolamides, 12 neutral mono-and polydentate organophosphorus compounds, [13][14][15][16][17][18][19][20] etc.) has been studied.…”

Section: Introductionmentioning

confidence: 99%

Synergistic Solvent Extraction of Lanthanides(III) with Mixtures of 4-Benzoyl-3-Methyl-1-Phenyl-5-Pyrazolone and Phosphoryl-Containing Podands

Туранов

Карандашев

Баулин

et al. 2020

ACSi

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“…These are known to be superior to TBP and other phosphorus compounds [19][20][21]. Petroleum sulfoxides (PSO) have been used extensively as extractant for various quadrivalent metals including Hf(IV) [22,23]. However, among other sulfoxides, di-n-butyl sulfoxide (DBSO) was found to be very effective in solvating the metal ions.…”

Section: Introductionmentioning

confidence: 99%

Liquid-liquid extraction of Hf(IV) from nitric acid with dibutylsulfoxide in cyclohexane

Khan¹,

Ali²

2002

Radiochimica Acta

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Hafnium / Extraction / Dibutylsulfoxide / Cyclohexane / Nitric acid Summary.A liquid-liquid extraction method has been investigated for quantitative extraction of hafnium from 8 M HNO 3 using 50% di-n-butyl sulfoxide (DBSO) dissolved in cyclohexane. The extraction parameters such as nitric acid, DBSO and metal ion concentrations, equilibration time and temperature were optimized. The extraction was found to be independent of metal ion concentration in the range 4.5 × 10 −4 -4.5 × 10 −2 M and inversely dependent upon the temperature. Phosphate, fluoride and oxalate interfere seriously and have almost masked the extraction of Hf(IV) whereas, thiocyanate and bromide have greatly decreased (25%-34%) the extraction. The stoichiometric composition of the extracted species was found to be Hf(NO 3 ) 4 ·2DBSO. Hafnium can be stripped from the organic phase by using 1 M HClO 4 . The proposed method allows the mutual separation of Hf(IV) and Zr(IV) using H 2 O 2 as masking agent for zirconium. The method has also been applied on synthetic mixtures of Hf and Zr for their separation and, the recovery was found to be quantitative.

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Synergistic Extraction of Trivalent Lanthanoids with 3-Phenyl-4-benzoyl-5-isoxazolone and Various Sulphoxides

Cited by 13 publications

References 7 publications

Thenoyltrifluoroacetone: Preferable Molecule for Solvent Extraction of Metals—Ancient Twists to New Approaches

Thenoyltrifluoroacetone: Preferable Molecule for Solvent Extraction of Metals—Ancient Twists to New Approaches

Synergistic Solvent Extraction of Lanthanides(III) with Mixtures of 4-Benzoyl-3-Methyl-1-Phenyl-5-Pyrazolone and Phosphoryl-Containing Podands

Liquid-liquid extraction of Hf(IV) from nitric acid with dibutylsulfoxide in cyclohexane

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