Solvent Extractive Separation of Zirconium and Hafnium from Hydrochloric Acid Solutions by Organophosphorous Extractants and Their Mixtures with Other Types of Extractants

Wang, Liang Yi; Lee, H. Y.; Lee, M. S.

doi:10.1080/00986445.2014.921621

Cited by 12 publications

(3 citation statements)

References 25 publications

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“…In previous work, 15) poor extraction of Zr(IV) and Hf(IV) by Versatic acid is also observed from 1 to 4 M strong HCl solutions. It might be inferred that the extraction of Zr(IV) and Hf(IV) by Versatic acid follows cation exchange reaction from both chloride and sulfate solutions.…”

Section: Solvent Extraction Of Zr(iv) and Hf(iv) Bymentioning

confidence: 78%

“…The investigation on the separation and extraction behavior of Zr(IV) and Hf(IV) from hydrochloric, nitric and sulfuric acid solutions by using cationic, neutral and amine-based extractants have been investigated in our previous work. [8][9][10][11][12][13][14][15] Based on this work, it was demonstrated that Zr(IV) is selectively extracted over Hf(IV) from strong hydrochloric or nitric acid solutions by cationic, neutral and amine extractants. [9][10][11][12][13] On the other hand, selective extraction of Hf(IV) over Zr(IV) occurs from only strong sulfuric acid solutions (1-4 M) by using acidic organophosphorus extractants.…”

Section: )mentioning

confidence: 93%

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Solvent Extraction of Zr(IV) and Hf(IV) from Sulfuric Acid Solutions by Acidic Extractants and Their Mixtures with TBP

Wang¹,

Lee

2016

Journal of the Korean Institute of Resources Recycling

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주제어 : 지르코늄, 하프늄, 분리, 황산, 양이온계 추출제 AbstractSeparation of Zr(IV) and Hf(IV) from sulfuric acid solutions was investigated by extraction with several acidic extractants such as Versatic acid, LIX 63, and Cyanex 301. From strong sulfuric acid solutions, the separation of Zr(IV) and Hf(IV) by Versatic acid and LIX 63 was not possible, while selective extraction of Hf(IV) over Zr(IV) was obtained with Cyanex 301. However, the extraction percentage of the two metals was much lower compared to that by D2EHPA. Mixing of TBP with Cyanex 301 and D2EHPA led to negative effect on the extraction and separation of the two metal ions. The difference in the extraction reaction and separation selectivity between HCl, HNO 3 and H 2 SO 4 media with each extractant was discussed.

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Section: Solvent Extraction Of Zr(iv) and Hf(iv) Bymentioning

confidence: 78%

Section: )mentioning

confidence: 93%

Solvent Extraction of Zr(IV) and Hf(IV) from Sulfuric Acid Solutions by Acidic Extractants and Their Mixtures with TBP

Wang¹,

Lee

2016

Journal of the Korean Institute of Resources Recycling

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“…), − acidic ligand (P204, Cyanex301, Cyanex 272, etc. ), − amine ligand (Aliquat 336, TEHA23, Ala-mine 308, etc. ), and so on. − Using different extraction mechanisms, several well-established Zr(IV) and Hf(IV) separation systems have been developed.…”

Section: Introductionmentioning

confidence: 99%

Breaking through the Separation Barrier of Zr(IV) and Hf(IV): Magical Effect of the Bisamide Ligand

Dong

Chen

et al. 2022

Inorg. Chem.

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The fundamental safety improvement of the nuclear industry depends on two important elements: Zr(IV) and Hf(IV). However, the elementary knowledge is that separation processes of the two are difficult, so there are few existing methods to meet the requirement. Furthermore, the process is highly contaminated. The development of green and efficient ligands for the separation of Zr(IV) and Hf(IV) is beneficial to the stable development of the nuclear industry. A bisamide ligand D001 was reported for the extraction and separation of Zr(IV) and Hf(IV). D001 utilizes an anionic association mechanism to extract Zr(IV) and Hf(IV) by coordinating amide groups with metals to form complexes H2ZrCl6·2 D001 and H2HfCl6·2 D001. Using quantum chemical calculations, we illuminate the extraction mechanism of bisamide ligands and the reasons for their better coordination ability than monoamide ligands and carboxylic acid ligands. A process of bisamide extraction and separation of Zr(IV) and Hf(IV) was established, and the thermodynamic parameters of the process were investigated.

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Preferential extraction of hafnium over zirconium with D2EHPA through selective complexation of organic acids

Zhao

Yang

Zhang

et al. 2019

J Radioanal Nucl Chem

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Solvent Extractive Separation of Zirconium and Hafnium from Hydrochloric Acid Solutions by Organophosphorous Extractants and Their Mixtures with Other Types of Extractants

Cited by 12 publications

References 25 publications

Solvent Extraction of Zr(IV) and Hf(IV) from Sulfuric Acid Solutions by Acidic Extractants and Their Mixtures with TBP

Solvent Extraction of Zr(IV) and Hf(IV) from Sulfuric Acid Solutions by Acidic Extractants and Their Mixtures with TBP

Breaking through the Separation Barrier of Zr(IV) and Hf(IV): Magical Effect of the Bisamide Ligand

Preferential extraction of hafnium over zirconium with D2EHPA through selective complexation of organic acids

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