Solvent Extraction of Au(CN)2− by Mixtures of the Primary Amine Tridecylamine and the Phosphine Oxide Cyanex 923

1998 ◽  
pp. 792-793 ◽  
Author(s):  
Francisco José Alguacil
Keyword(s):  
Solvent Extraction ◽  
Phosphine Oxide ◽  
Primary Amine ◽  
Cyanex 923

Solvent extraction of Au(CN)2−1 with mixtures of the amine Primene JMT and the phosphine oxide Cyanex 923

1997 ◽  
Vol 44 (3) ◽  
pp. 359-369 ◽  
Author(s):  
F.J. Alguacil ◽  
C. Caravaca ◽  
J. Mochón ◽  
A. Sastre
Keyword(s):  
Solvent Extraction ◽  
Phosphine Oxide ◽  
Cyanex 923

scholarly journals Extraction and separation of U(VI) and Th(IV) from hydrobromic acid media using Cyanex-923 extractant

2010 ◽  
Vol 75 (11) ◽  
pp. 1549-1557 ◽  
Author(s):  
Snehal Ghag ◽  
Suresh Pawar
Keyword(s):  
Solvent Extraction ◽  
Metal Ions ◽  
Organic Phase ◽  
Phosphine Oxide ◽  
Hydrobromic Acid ◽  
Analysis Method ◽  
Acid Media ◽  
Extraction And Separation ◽  
Slope Analysis ◽  
Cyanex 923

A systematic study of the solvent extraction of uranium(VI) and thorium(IV) from hydrobromic acid media was performed using the neutral phosphine oxide extractant Cyanex-923 in toluene. These metal ions were found to be quantitatively extracted with Cyanex-923 in toluene in the acidity range 5x10-5-1x10-4 M and 5x10-5-5x10-3 M, respectively, and they are stripped from the organic phase with 7.0 M HClO4 and 2.0- 4.0 M HCl, respectively. The effect of the equilibrium period, diluents, diverse ions and stripping agent on the extraction of U(VI) and Th(IV) was studied. The stoichiometry of the extracted species of these metal ions was determined based on the slope analysis method. The extraction reactions proceed by solvation and their probable extracted species found in the organic phase were UO2Br2?2Cyanex-923 and ThBr4?2Cyanex-923. Based on these results, a sequential procedure for their separation from each other was developed.

Solvent Extraction of Zinc from Acidic Calcium Chloride Solutions by Cyanex 923

2000 ◽  
Vol 2000 (4) ◽  
pp. 188-189 ◽  
Author(s):  
Susana Martínez ◽  
Francisco José Alguacil
Keyword(s):  
Experimental Data ◽  
Solvent Extraction ◽  
Calcium Chloride ◽  
Phosphine Oxide ◽  
Zinc Chloride ◽  
Chloride Ions ◽  
Extraction Mechanism ◽  
Chloride Solutions ◽  
Slope Analysis ◽  
Cyanex 923

The reaction of zinc chloride with Cyanex 923 (phosphine oxide) in Solvesso 100 has been studied from acidic calcium chloride solutions. The distribution coeffient of zinc is independent of equilibrium pH, thus, suggesting a solvation extraction mechanism. Experimental data indicate that the reaction is exothermic (Δ H° = −55.2 kJmol−1). Slope analysis for the system at various Cyanex 923 concentrations reveals the formation in the loaded organic phases of species which probable 1:2 (Zn: Cyanex 923) stoichiometries. The stoichiometric factor of water in the extraction reaction was found to be 0, 1 or 2, whereas experimental data indicated that two chloride ions are involved for each metal extracted.

The extraction of mineral acids by the phosphine oxide Cyanex 923

1996 ◽  
Vol 42 (2) ◽  
pp. 245-255 ◽  
Author(s):  
F.J. Alguacil ◽  
F.A. López
Keyword(s):  
Phosphine Oxide ◽  
Mineral Acids ◽  
Cyanex 923

scholarly journals Separation of rare-earth ions from ethylene glycol (+LiCl) solutions by non-aqueous solvent extraction with Cyanex 923

RSC Advances ◽  
2017 ◽  
Vol 7 (72) ◽  
pp. 45351-45362 ◽  
Author(s):  
Nagaphani Kumar Batchu ◽  
Tom Vander Hoogerstraete ◽  
Dipanjan Banerjee ◽  
Koen Binnemans
Keyword(s):  
Rare Earth ◽  
Solvent Extraction ◽  
Ethylene Glycol ◽  
Rare Earths ◽  
Rare Earth Ions ◽  
Aqueous Solvent ◽  
Cyanex 923

Mixtures of rare earths are separation by non-aqueous solvent extraction with two immiscible organic phases.

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