Ionic Liquid (IL) Cation and Anion Structural Effects on Metal Ion Extraction into Quaternary Ammonium-based ILs

2015 ◽  
Vol 34 (1) ◽  
pp. 48-59 ◽  
Author(s):  
James L. Wankowski ◽  
Mark L. Dietz
Keyword(s):  
Ionic Liquid ◽  
Quaternary Ammonium ◽  
Metal Ion ◽  
Structural Effects ◽  
Metal Ion Extraction ◽  
Ion Extraction

Diglycolamide-Based Solvent Systems in Room Temperature Ionic Liquids for Actinide Ion Extraction: A Review

2015 ◽  
Vol 10 (2) ◽  
pp. 135-145 ◽  
Author(s):  
Prasanta Kumar Mohapatra
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Metal Ion ◽  
Room Temperature ◽  
Review Article ◽  
Metal Ion Extraction ◽  
Ion Extraction ◽  
Radiolytic Stability ◽  
Solvent Systems ◽  
Functionalized Ligands

Abstract This review article gives a comprehensive account of the extraction of actinide ions using room temperature ionic liquid-based solvent systems containing diglycolamide (DGA) or functionalized DGA extractants. These extractants include multiple DGA-functionalized ligands such as tripodal DGA (T-DGA) and DGA-functionalized calix [4]arenes (C4DGA). Apart from metal ion extraction behaviour, other important features of the ionic liquid-based solvent systems such as separation behaviour, luminescence spectroscopic results, thermodynamics of extraction and radiolytic stability of the ionic liquid-based solvents are also reviewed. Results from studies on DGA-functionalized task-specific ionic liquids (TSIL) are also included in this review article.

Benzene-centred tripodal diglycolamides for the sequestration of trivalent actinides: metal ion extraction and luminescence spectroscopic investigations in a room temperature ionic liquid

2017 ◽  
Vol 46 (34) ◽  
pp. 11355-11362 ◽  
Author(s):  
Seraj Ahmad Ansari ◽  
Prasanta Kumar Mohapatra ◽  
Andrea Leoncini ◽  
Jurriaan Huskens ◽  
Willem Verboom
Keyword(s):  
Ionic Liquid ◽  
Liquid Medium ◽  
Metal Ion ◽  
Room Temperature ◽  
Room Temperature Ionic Liquid ◽  
Metal Ion Extraction ◽  
Ion Extraction ◽  
Spectroscopic Investigations ◽  
Trivalent Actinides ◽  
Ionic Liquid Medium

Three benzene-centred tripodal diglycolamide (Bz-T-DGA) ligands were evaluated for actinide ion extraction/complexation in an ionic liquid medium.

Unique selectivity reversal in Am3+–Eu3+ extraction in a tripodal TREN-based diglycolamide in ionic liquid: extraction, luminescence, complexation and structural studies

2016 ◽  
Vol 45 (6) ◽  
pp. 2476-2484 ◽  
Author(s):  
Andrea Leoncini ◽  
Prasanta K. Mohapatra ◽  
Arunasis Bhattacharyya ◽  
Dhaval R. Raut ◽  
Arijit Sengupta ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Metal Ion ◽  
Liquid Extraction ◽  
Structural Studies ◽  
Metal Ion Extraction ◽  
Ion Extraction

A unique selectivity reversal in metal ion extraction was seen in DGA-TREN vis-à-vis T-DGA.

Partitioning of Cs+ and Na+ ions by dibenzo-18-crown-6 ionophore in biphasic aqueous systems of octanol and ionic liquid

2018 ◽  
Vol 106 (6) ◽  
pp. 477-495 ◽  
Author(s):  
Rima Biswas ◽  
Pallab Ghosh ◽  
Tamal Banerjee ◽  
Sk. Musharaf Ali
Keyword(s):  
Surface Tension ◽  
Ionic Liquid ◽  
Metal Ion ◽  
Md Simulations ◽  
Water Interface ◽  
Metal Ion Extraction ◽  
Ion Extraction ◽  
Self Diffusion ◽  
Future Design ◽  
Solvent Phase

Abstract Molecular dynamics (MD) simulations were carried out to obtain molecular level insights on the behavior of Cs+/Na+ ions at the water–ionic liquid and water–octanol interface in the presence of dibenzo-18-crown-6 (DB18C6) ionophore with an aim to compare an ionic liquid (IL) to a octanol as receiving organic solvent phase. It was observed that the rate of phase separation for the octanol system was rapid as compared to the IL system. The free crown ethers (CE) were found to be highly solvated by the IL phase. A dual cationic exchange mechanism was observed at the [BMIM]/water interface. The [BMIM]+ cation was found to exchange with both the metal ions in aqueous phase as well as with the metal ion aided by the ionophore. The self-diffusion coefficient of the 1:2 complex (0.07×10−9 m2/s) at the octanol/water interface were found to be smaller than that of 1:1 complex (0.37 and 0.14×10−9 m2/s). It was observed that the surface tension of ILs decreased in the presence of complexes and free CE, whereas the surface tension of water was found to increase in presence of salts (Cs+NO3− and Na+NO3−). The experimentally determined value of DCs was found to be quite high in IL phase (1.595) compared to the octanol phase (0.139) in presence of CE. The kinetics of Cs+ was found to be very fast having rate with values of $\widehat {{k_1}}$ =1.79×10−12 s−1 and $\widehat {{k_2}}$ =0.205×10−12 s−1 in IL and water phase, respectively. The present results may help us in understanding the role of diluents in the assisted metal ion extraction but also in the future design of diluents and ionophore.

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