Acylpyrazolone ligands : Synthesis, structures, metal coordination chemistry and applications

Synergistic solvent extraction and separation of trivalent lanthanide metals with mixtures of 4-benzoyl-3-methyl-1-phenyl-2-pyrazolin-5-one and aliquat 336

Effect of the diluents on the synergistic solvent extraction of some lanthanides with thenoyltrifluoroacetone and quaternary ammonium salt

The synergistic solvent extraction of lanthanide ions with mixtures of 1‐phenyl‐3‐methyl‐4‐benzoyl‐pyrazol‐5‐one (HP) and the quaternary ammonium salt Aliquat 336 in chloride (QCl) or perchlorate (QClO4) forms in C6H6 was studied. The composition of the extracted species was determined as Q[LnP4] (Q+ is a quaternary ammonium salt cation). The values of the equilibrium constant were calculated. The extraction mechanism as well as the effect of the quaternary ammonium salt anion (Cl− or ClO4 −) on the extraction process are discussed. The separation factors of the lanthanide ions were determined on the basis of the experimental data. Some trends in the lanthanide separation were established.

Synergistic Solvent Extraction and Separation of Lanthanides Using Mixtures of 1‐Phenyl‐3‐methyl‐4‐benzoyl‐pyrazol‐5‐one and Aliquat‐336: Influence of the Ammonium Salt Anion

The extraction of zinc(II) and cadmium(II) from a chloride medium by mixtures of primary amine N1923 and organophosphorus acids [di‐(2‐ethylhexyl)‐phosphoric acid, 2‐ethylhexylphosphonic acid mono‐2‐ethylhexyl ester (HEH/EHP), isopropyl phosphonic acid 1‐hexyl‐4‐ethyloctyl ester, bis(2,4,4‐trimethylpentyl) phosphinic acid, bis(2,4,4‐trimethylpentyl) monothiophosphinic acid, and bis(2,4,4‐trimethylpentyl) dithiophosphinic acid] has been studied in the present paper. Results show that only the mixtures of N1923 + HEH/EHP and N1923 + Cyanex272 have synergistic effects on zinc(II), but the other mixtures have no evident synergistic effects. All six mixtures have no evident synergistic effects on cadmium(II). A possible explanation of the different extraction abilities is given based on the structure of the extractants. Furthermore, the possibilities of separating zinc(II) and cadmium(II) with these mixtures are investigated according to the extractabilities. It is possible to separate Zn2+ from bulk ...

Extraction of Zinc(II) and Cadmium(II) by Using Mixtures of Primary Amine N1923 and Organophosphorus Acids

Effect of inorganic aqueous anions on the synergic extraction of cadmium and zinc with 1-phenyl-3-methyl-4-benzoyl-pyrazol-5-one (HPMBP) and lipophilic ammonium salts

Z. Lakkis

Papers

Effect of inorganic aqueous anions on the synergic extraction of cadmium and zinc with 1-phenyl-3-methyl-4-benzoyl-pyrazol-5-one (HPMBP) and lipophilic ammonium salts