An ionic liquid-based extraction system using diglycolamide functionalized macrocyclic platforms for the extraction and recovery of lanthanides,Dalton Transactions

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An ionic liquid-based extraction system using diglycolamide functionalized macrocyclic platforms for the extraction and recovery of lanthanides
Dalton Transactions ( IF 3.5 ) Pub Date : 2017-10-19 00:00:00 , DOI: 10.1039/c7dt02797d
M. Wehbie _{1,

2,

3,

4,

5} , G. Arrachart _{1,

2,

3,

4,

5} , L. Ghannam _{6,

7,

8,

9,

10} , I. Karamé _{6,

7,

8,

9,

10} , S. Pellet-Rostaing _{1,

2,

3,

4,

5}

Affiliation

Solvent extraction of lanthanides Ln(III) (La, Eu and Yb) with resorcin[4]arene cavitand-triazole-DODGA (CR4-TZ-DODGA) and t-butylcalix[4]arene-triazole-DODGA (C4-TZ-DODGA) has been studied in a room temperature ionic liquid (RTIL), N-octyl-N-ethylpiperidinium bis(trifluoromethylsulfonyl)imide ([EOPip]NTf₂). The two macrocyclic platforms were functionalized with four diglycolamide (DGA) moieties thanks to a click reaction and fully characterized by NMR and MS analysis. The effects of acidity as well as the concentration of the ligands were investigated on the extraction and separation properties. The parameters of the extraction processes were determined by the slope method and thermodynamic studies. For both ligands, the extraction efficiency changes along the lanthanoid series with selectivity toward Yb(III) in regard to La(III) and Eu(III). The selective extraction and recovery of lanthanides from a simulated leaching solution of a Nd/Fe/B/Dy magnet has also been investigated.

中文翻译：

使用二甘醇酰胺官能化的大环平台的离子液体萃取系统，用于镧系元素的萃取和回收

镧系元素LN（溶剂萃取III与间苯二酚）（LA，Eu和Yb）的[4]芳烃穴状三唑DODGA（CR4-TZ-DODGA）和吨-butylcalix [4]芳烃三唑DODGA（C4-TZ- DODGA）已在室温离子液体（RTIL ），N-辛基-N-乙基哌啶双（三氟甲基磺酰基）酰亚胺（[EOPip] NTf ₂）。由于点击反应，两个大环平台被四个二甘醇酰胺（DGA）部分官能化，并通过NMR和MS分析进行了全面表征。研究了酸度以及配体浓度对萃取和分离性能的影响。通过斜率法和热力学研究确定了提取工艺的参数。对于两个配体，关于La（III）和Eu（III），提取效率沿着镧系元素变化，并且对Yb（III）具有选择性。还研究了从Nd / Fe / B / Dy磁铁的模拟浸出溶液中选择性提取和回收镧系元素的方法。

更新日期：2017-11-20

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