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Solvent extraction of palladium(Ⅱ)from hydrochloric acid solution with 2-n-octyl-4-isothiazolin-3-one(OIT)/cyclohexane was studied.Effects of different parameters on extraction efficiency were evaluated.99.96% and 98.26% palladium(Ⅱ)could be effectively extracted with 0.018 mol·L-1OIT/cyclohexane of 0.1 and 4.0 mol·L-1HCl medium,respectively.Nonpolar solvent and low acidity could improve the extracting efficiency,and successfully strip palladium(Ⅱ)from the loaded organic phase was achieved with 0.5 mol·L-1(NH2)2CS solution.It was proposed that the extraction of Pd complexes from HCl medium proceeded through the ionassociation mechanism by slope method,NMR and FT-IR spectra.
Solvent extraction of palladium (II) from hydrochloric acid solution with 2-n-octyl-4-isothiazolin-3-one (OIT) / cyclohexane was studied. Effects of different parameters on extraction efficiency were evaluated as 99.96% and 98.26% palladium Ⅱ) could be effectively extracted with 0.018 mol·L-1 OIT / cyclohexane of 0.1 and 4.0 mol·L-1HCl medium, respectively. Nonpolar solvent and low acidity could improve the extraction efficiency, and successfully strip palladium (Ⅱ) from the loaded organic phase was achieved with 0.5 mol·L-1 (NH2) 2CS solution. It was proposed that the extraction of Pd complexes from HCl medium proceeded through the ionassociation mechanism by slope method, NMR and FT-IR spectra.