Highly Effective Extraction of Iron(III) with 4-Isopropyltropolone in Nonpolar Solvents Containing 3,5-Dichlorophenol as a Synergist

Imura, Hisanori; Ishimori, Ken-ichiro; Ohashi, Kousaburo

doi:10.2116/analsci.16.1297

Cited by 8 publications

(6 citation statements)

References 21 publications

(25 reference statements)

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“…The solution was heated and evaporated to dryness. The residue was dissolved in 3.0 cm 3 of concentrated nitric acid and diluted with water to 200 cm 3 . The composition of brass was determined by ICP-AES.…”

Section: Separation Of Copper and Zinc In Brass Alloymentioning

confidence: 99%

“…Among these methods, solvent extraction 1,2 is one of the most attractive because it offers various alternatives for metal separation and concentration in a multi-element system, including selective extraction. However, organic solvents, such as chloroform or benzene, are volatile and noxious; 3 therefore, the conventional solvent extraction methods are not desirable from the viewpoint of environmental preservation and their harmful influence on human health.…”

Section: Introductionmentioning

confidence: 99%

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Ion-Pair Formation of a Copper(II)-Ammine Complex with an Anionic Surfactant and the Recovery of Copper(II) from Ammonia Medium by the Surfactant-Gel Extraction Method

et al. 2004

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The extraction and separation of copper(II), zinc(II), cobalt(II), and cadmium(II) were investigated. Both copper(II) and zinc(II) formed ammine-complexes, while cadmium(II) and cobalt(II) formed hydroxide precipitates in an ammonia medium. By the addition of sodium dodecylsulfate (SDS), a copper(II) complex formed an ion-pair (copper-ammine-DS), which was extracted into the SDS phase. However, a zinc(II) complex did not form an ion-pair, and was soluble in water. Copper(II) ion was recovered by stripping (back-extraction) after the addition of hydrochloric acid. This method was applied to the separation of copper(II) in a brass alloy.

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Section: Separation Of Copper and Zinc In Brass Alloymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Ion-Pair Formation of a Copper(II)-Ammine Complex with an Anionic Surfactant and the Recovery of Copper(II) from Ammonia Medium by the Surfactant-Gel Extraction Method

et al. 2004

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“…In our previous paper dealing with the hydrogen-bond ability of tris(4-isopropyltropolonato)iron(III) and tris(acetylacetonato)iron(III), the former indicated a hydrogen-bond accepting power higher than that of the latter. 10 The difference between Co(ipt)3 and Co(acac)3 961 ANALYTICAL SCIENCES AUGUST 2001, VOL. 17 Fig.…”

Section: Synergistic Effect Of Co(iii) Chelate Toward the Light And Tmentioning

confidence: 99%

“…On the other hand, coordinately saturated chelates such as tris-(acetylacetonato)metals(III), [1][2][3][4][5][6][7] tris(8-quinolinolato)metals (III), 6,8,9 and tris(4-isopropyltropolonato)metals(III) 10 of aluminium(III), 1,9 scandium(III), 2 chromium(III), 3 iron(III), 4,8,10 cobalt(III), 5,6 gallium(III), 7,9 and indium(III) 7,9 have been found to form stable association complexes with proton donors such as chlorinated phenols in the organic phase. This phenomenon has been ascribed to the hydrogen-bond formation between coordinating oxygen atoms of the chelates and a hydroxy hydrogen atom of the phenols and also applied to synergistic extraction.…”

Section: Introductionmentioning

confidence: 99%

“…This phenomenon has been ascribed to the hydrogen-bond formation between coordinating oxygen atoms of the chelates and a hydroxy hydrogen atom of the phenols and also applied to synergistic extraction. 1,2,4,[7][8][9][10] This shows that these coordinately saturated chelates act as hydrogen-bond accepters or Lewis bases. Therefore, some interaction is expected between coordinately unsaturated Ln chelates and the coordinately saturated metal(III) chelates described above.…”

Section: Introductionmentioning

confidence: 99%

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Synergistic Effect of Tris(4-isopropyltropolonato)cobalt(III) on the Extraction of Lanthanoid(III) with 2-Thenoyltrifluoroacetone

Kameta

Imura

2001

ANAL. SCI.

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Synergistic enhancement of the extraction of lanthanoid(III) (Ln) with 2-thenoyltrifluoroacetone (Htta) in benzene has been found by the addition of tris(4-isopropyltropolonato)cobalt(III) (Co(ipt)3). The synergistic effect of Co(ipt)3 was ascribed to the formation of a 1:1 adduct of Ln(tta)3 with Co(ipt)3, i.e., a binuclear complex, in the organic phase. The adduct formation constant (beta s,1) determined by the extraction equilibrium analysis was reasonably consistent with that determined by spectrophotometry. The beta s,1 values decreased with increase in the atomic number of Ln and showed a large difference between light and heavy Ln. Spectroscopic studies were performed to explain the difference in the beta s,1 values. Electronic absorption spectra showed that the change in the structure of Co(ipt)3 complexed with the light Ln chelate is larger than that with the heavy Ln. The IR spectra showed the displacement of the coordinated water molecules of the light Ln chelates with Co(ipt)3. On the other hand, the adduct formation of heavy Ln was caused by the hydrogen bonding between Co(ipt)3 and the coordinated water of the Ln chelate.

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The ion-pair formation between dodecylsulfate and ammine-complexes of copper(II), nickel(II), zinc(II), palladium(II) and platinum(II), and the extraction behavior of the ammine-complexes by using sodium dodecylsulfate

Nakai

Murakami

Sasaki

et al. 2005

Talanta

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Highly Effective Extraction of Iron(III) with 4-Isopropyltropolone in Nonpolar Solvents Containing 3,5-Dichlorophenol as a Synergist

Cited by 8 publications

References 21 publications

Ion-Pair Formation of a Copper(II)-Ammine Complex with an Anionic Surfactant and the Recovery of Copper(II) from Ammonia Medium by the Surfactant-Gel Extraction Method

Ion-Pair Formation of a Copper(II)-Ammine Complex with an Anionic Surfactant and the Recovery of Copper(II) from Ammonia Medium by the Surfactant-Gel Extraction Method

Synergistic Effect of Tris(4-isopropyltropolonato)cobalt(III) on the Extraction of Lanthanoid(III) with 2-Thenoyltrifluoroacetone

The ion-pair formation between dodecylsulfate and ammine-complexes of copper(II), nickel(II), zinc(II), palladium(II) and platinum(II), and the extraction behavior of the ammine-complexes by using sodium dodecylsulfate

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