Extraction of nitrates of alkali and alkaline earth metals with crown ether into hydrophilic ionic liquid in the presence of salting out agent

2009 ◽  
Vol 64 (3) ◽  
pp. 130-133 ◽  
Author(s):  
D. I. Djigailo ◽  
S. V. Smirnova ◽  
I. I. Torocheshnikova ◽  
A. G. Vendilo ◽  
K. I. Popov ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Crown Ether ◽  
Alkaline Earth ◽  
Alkaline Earth Metals ◽  
Salting Out

scholarly journals Extraction properties of β-aminophosphine oxides towards lanthanides and alkaline earth metals

2012 ◽  
Vol 10 (6) ◽  
pp. 1933-1941 ◽  
Author(s):  
Ekaterina Matveeva ◽  
Elena Sharova ◽  
Alexander Turanov ◽  
Vasilii Karandashev ◽  
Irina Odinets
Keyword(s):  
Ionic Liquid ◽  
Metal Ions ◽  
Phosphine Oxide ◽  
Separation Factor ◽  
Alkaline Earth ◽  
Extraction Efficiency ◽  
Alkaline Earth Metals ◽  
Neutral Media ◽  
Extraction Properties

AbstractThe investigation of the extraction properties of a series of polyoligodentate β-aminophosphine oxides 1–8 bearing from one to six phosphine oxide groups in a molecule towards Ln(III) and alkaline earth metals ions from neutral media has revealed that, using common diluents, the extraction efficiency increases with an increase of a number of P=O functions in a ligand. The addition of ionic liquid, namely 1-butyl-3-methylimidazolium bis[(trifluoromethyl)sulfonyl]imide ([bmim][NTf2]), significantly increasing the extraction efficiency and application of IL concentration of 0.05 M (in 1,2-dichloroethane) providing the maximum recovery of metal ions with Lu/La separation factor reaching up to 91. Hexapodal tris[bis(2-diphenylphosphorylethyl)aminoethyl]amine 8 demonstrates the highest extraction under all conditions applied and the separation factor for U and Eu of this compound exceeded 103.

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