Ion exchange and solvent extraction of the thiourea complex cation of technetium-99 from mineral acid solutions

1979 ◽  
Vol 51 (2) ◽  
pp. 401-405 ◽  
Author(s):  
R. Kopunec ◽  
F. macášek ◽  
P. Rajec ◽  
D. Hudecová
Keyword(s):  
Solvent Extraction ◽  
Ion Exchange ◽  
Complex Cation ◽  
Mineral Acid ◽  
Acid Solutions ◽  
Thiourea Complex

Solvent extraction of reduced technetium from mineral acid solutions

1979 ◽  
Vol 51 (1) ◽  
pp. 85-95
Author(s):  
P. Rajec ◽  
V. Mukulaj ◽  
J. Kadrabová
Keyword(s):  
Solvent Extraction ◽  
Mineral Acid ◽  
Acid Solutions

Studies on the Solvent Extraction of Iron (III) with Tri-iso-octylamine from Aqueous Mineral Acid Solutions

2012 ◽  
Vol 28 (4) ◽  
pp. 1785-1790 ◽  
Author(s):  
A.V.L.N.S.H. HARIHARAN ◽  
CH. SUDHAKAR ◽  
B. VENKATESWARA RAO
Keyword(s):  
Solvent Extraction ◽  
Mineral Acid ◽  
Acid Solutions

Adsorption of corrosion inhibitor IFKhAN-92 on chrome-nickel steel from mineral acid solutions

2020 ◽  
pp. 27-32
Author(s):  
Ya. G. Avdeev ◽  
◽  
D.S. Kuznetsov ◽  
Yu.I. Kuznetsov ◽  
◽  
...  
Keyword(s):  
Corrosion Inhibitor ◽  
Mineral Acid ◽  
Nickel Steel ◽  
Acid Solutions

Extraction of hafnium(IV) with N-benzoyl-N-phenylhydroxylamine solutions from strongly acid solutions containing dimethyl sulphoxide or hexamethylphosphor triamine

1984 ◽  
Vol 49 (10) ◽  
pp. 2205-2209
Author(s):  
Jiří Příhoda ◽  
Alois Zeman
Keyword(s):  
Ion Exchange ◽  
Dimethyl Sulfoxide ◽  
Dimethyl Sulphoxide ◽  
Polar Phase ◽  
Acid Solutions ◽  
Extraction Mechanism

The extraction of hafnium(IV) with N-benzoyl-N-phenylhydroxylamine solutions in chloroform or toluene from strongly acid (HClO4) solutions of dimethyl sulfoxide or hexamethylphosphor triamide has been studied. These substances were found to suppress the conversion of the extraction mechanism from ion exchange to solvation: while in solutions free of these substances this conversion takes place at HClO4 concentrations of about 4 mol l-1, in the mixed aqueous-organic (polar) phase the requisite acid concentrations are considerably higher. The possible causes of this effect are discussed.

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