62094-35-3Relevant academic research and scientific papers
Separation studies of Pd(II) from acidic chloride solutions of Pt(IV), Ni(II) and Rh(III) by using 4-aroyl-3-phenyl-5-Isoxazolones
Reddy, Koduru Janardhan,Duk, Lee Kap
experimental part, p. 756 - 765 (2012/07/14)
This study examined the effectinfluence of various factors on the extraction of Pd(II) to develop a new liquid-liquid extraction mechanism for the selective separation of palladium(II) from its acidic chloride solutions using 4-aroyl-3-phenyl-5-isoxazolones (HA), such as 3-phenyl-4-(4-fluorobenzoyl)-5- isoxazolone (HFBPI), 3-phenyl-4-benzoyl-5-isoxazolone (HPBI) and 3-phenyl-4-(4-toluoyl)-5-isoxazolone (HTPI). The extraction strength of Pd(II) with HA were in the followingorder: HFBPI > HPBI > HTPI, which is opposite to that observed withtheir pKavalues. HPBI was used to separatePd(II) from Pt(IV), Ni(II) and Rh(III) metal ions and calculated their separation factors (S.F.) were followed in the order: Pd/Ni (40±0.4) > Pd/Pt (25±0.2) > Pd/Rh (15±0.3 > Rh/Ni (2.7±0.3) > Pt/Ni ≈ Rh/Pt (1.7±0.2). The loading and striping of Pd(II) (1.12×10-4 mol L-1) were also examinedusing 1.0×10-3 mol L-1HPBI in CHCl3 and 1.0 mol L-1HCl, respectively. The results demonstrated that the maximum (97.5%) extraction and desorption(89%) of metal required at least 3.0 cycles. The developed method was applied successfully tothe separation of palladium from synthetic water samples.
