Synthesis of octa(1,1,3,3-tetramethylbutyl)octakis(dimethylphosphinoylmethyleneoxy)calix[8]arene and its application in the synergistic solvent extraction and separation of lanthanoids

2008 ◽  
Vol 64 (2) ◽  
pp. 170-175 ◽  
Author(s):  
Emil Tashev ◽  
Maria Atanassova ◽  
Sabi Varbanov ◽  
Tania Tosheva ◽  
Stoycho Shenkov ◽  
...  
Keyword(s):  
Solvent Extraction ◽  
Extraction And Separation ◽  
Synergistic Solvent Extraction

Effect of crown ethers on the solvent extraction and separation of lanthanide(III) ions with 4-benzoyl-3-methyl-1-phenyl-2-pyrazolin-5-one

2008 ◽  
Vol 62 (2) ◽  
Author(s):  
Maria Petrova ◽  
Ivan Dukov
Keyword(s):  
Experimental Data ◽  
Solvent Extraction ◽  
Crown Ethers ◽  
Synergistic Effects ◽  
Equilibrium Constants ◽  
Chloride Medium ◽  
Extraction And Separation ◽  
Separation Factors ◽  
Aqueous Chloride ◽  
Synergistic Solvent Extraction

AbstractSynergistic solvent extraction of 14 lanthanides with mixtures of 4-benzoyl-3-methyl-1-phenyl-2-pyrazolin-5-one (HP) and the crown ethers (S), 18-crown-6, benzo-18-crown-6 or dibenzo-18-crown-6 from an aqueous chloride medium with the constant ionic strength of 0.1 mol dm−3 was investigated using benzene as a diluent. The composition of the species extracted was determined as LnP3 · S. The addition of a crown ether to the chelating extractant produced rather significant synergistic effects. On basis of experimental data, values of equilibrium constants, synergistic coefficients, and separation factors were calculated.

Relative distribution enhancement: A new factor for the evaluation of synergistic solvent extraction

2021 ◽  
Author(s):  
Diana Laura Gómez‐Sánchez ◽  
Hikaru Koga ◽  
Yonggu Kim ◽  
Mauricio Cordova Udaeta ◽  
Gjergj Dodbiba
Keyword(s):  
Solvent Extraction ◽  
Relative Distribution ◽  
Synergistic Solvent Extraction
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