Application of Bifunctional Ionic Liquid Extractants [A336][CA-12] and [A336][CA-100] to the Lanthanum Extraction and Separation from Rare Earths in the Chloride Medium

Wang, Wei; Yang, Hualing; Cui, Hongmin; Zhang, Dongli; Liu, Yu; Chen, Ji

doi:10.1021/ie2001633

Cited by 110 publications

(58 citation statements)

References 30 publications

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“…The extraction and separation of rare earth metals was examined by using these new compounds as extractants dissolved in organic solvents. It was reported that higher extraction ability was obtained for the bif-ILE than that for the mixture of two extractants that are the constituents of bif-ILE [68][69][70].…”

Section: Task-specific Ionic Liquidsmentioning

confidence: 99%

Application of Ionic Liquids for the Separation of Rare Earth Metals

Kubota

Baba

Goto

2012

SERDJ

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Liquid-liquid extraction is one of the most important techniques for the separation of rare earth metals in hydrometallurgy. Recently, ionic liquids (ILs) have attracted much attention as green alternatives to conventional organic solvents. Due to the additional advantage of good radiation stability, their application to the separation of fission products in nuclear fuel reprocessing has been promoted. In this article, we summarize the IL-based extraction of rare earth metals and advanced techniques are described.

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Section: Task-specific Ionic Liquidsmentioning

confidence: 99%

Application of Ionic Liquids for the Separation of Rare Earth Metals

Kubota

Baba

Goto

2012

SERDJ

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“…Alkyl‐phosphate has been widely used for many years in industrial processes such as solvent extraction, heavy metal ion reagent, plasticizer, lubricant, surfactant, corrosion inhibitor, etc . Tri‐n‐butyl phosphate (TBP) is one of the alkyl‐phosphates and has been used as an extractant in the PUREX process for the separation of uranium and plutonium from irradiated nuclear fuel over the last six decades .…”

Section: Introductionmentioning

confidence: 99%

Intensification of esterification process in TBP synthesis by in situ vapor stripping

Zhang

Jin

et al. 2019

J of Chemical Tech & Biotech

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BACKGROUND Over the past few decades, tri‐n‐butyl phosphate (TBP) has been a widely used and irreplaceable extractant that can extract a variety of heavy metal ions and inorganic acids. The conventional process of tri‐n‐butyl phosphate synthesis has the problem of low yield. The in situ vapor stripping method was developed to intensify the tri‐n‐butyl phosphate synthesis reaction. RESULTS In this work, the coupling process of in situ vapor stripping and reaction was proposed for the first time in the process of synthesis of TBP. It was found that the reaction of high concentration hydrogen chloride and 1‐butanol would produce water, which resulted in increasing the possibility of side reactions, especially when the temperature was higher than 55 °C. In the lower temperature range, n‐pentane was selected as the stripping medium, which effectively removed hydrogen chloride from the reaction system by in situ vapor stripping. The FT‐IR analysis confirmed that TBP can be synthesized successfully by the vapor stripping process. In addition, the effects of n‐pentane volume, temperature and stripping time on the yield of TBP and the amount of hydrogen chloride stripped were investigated. By applying the optimum reaction conditions, the yield of TBP was increased to 94%, larger than that of the current industrial process whose yield is only 80%. CONCLUSION The in situ vapor stripping process is demonstrated to be an effective method for intensification of the esterification process in TBP synthesis. It can be used for other reactions which generate volatile gases as the byproduct. © 2018 Society of Chemical Industry

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“…The quaternary ammonium salt [A336]Cl is extensively used as a synergistic agent, often in combination with HTTA, for synergistic extraction of trivalent lanthanides [2,3], which has been found to be considerably enhanced relative to [A336]Cl salts or HTTA alone. Ammonium-Bif-ILEs containing 1,3-diketonate [19] anions [TTA]  have been reported for the extraction of plutonium(IV), but not for the extraction of REs(III) [20,21].…”

Section: Introductionmentioning

confidence: 99%

Extraction mechanism of rare earths from chloride acidic solution with ammonium-bifunctionalized ionic liquid extractants

et al. 2016

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A series of ammonium-bifunctionalized ionic liquid extractants (ammonium-Bif-ILEs) combined with a number of anions, including carboxylic acids and 1,3-diketonates, have been prepared and studied in this report. Their extraction behavior and properties toward rare earth ions (REs(III)) are systematically investigated in chloride media as a function of important parameters such as aqueous phase pH, salting-out agent concentrations, and extraction temperature. The separation performance of ammonium-Bif-ILEs toward REs(III) are systematically discussed. The results demonstrate that ammonium-Bif-ILEs have a synergistic effect between the cation and anions in separation of REs(III). The influences of different anions on separation factor () values are further studied. By comparison, ammonium-Bif-ILEs containing 1,3-diketonates have more potential applications in La(III)/RE(III) separation than those containing carboxylic acids. ammonium-bifunctional ionic liquids, separation, rare earths Citation:Yang HL, Chen J, Wang W, Cui HM, Liu WG, Liu Y. Extraction mechanism of rare earths from chloride acidic solution with ammonium-bifunctionalized ionic liquid extractants.

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Application of Bifunctional Ionic Liquid Extractants [A336][CA-12] and [A336][CA-100] to the Lanthanum Extraction and Separation from Rare Earths in the Chloride Medium

Cited by 110 publications

References 30 publications

Application of Ionic Liquids for the Separation of Rare Earth Metals

Application of Ionic Liquids for the Separation of Rare Earth Metals

Intensification of esterification process in TBP synthesis by in situ vapor stripping

Extraction mechanism of rare earths from chloride acidic solution with ammonium-bifunctionalized ionic liquid extractants

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