Mechanistic Studies on the Extraction of Palladium(ii) With Dioctyl Sulpide

Upper Rim Thioether Derivatives of Calix[4,6]Arenes: Extraction of Fission Pd(II) and Ag(I)

“…1). This is due to the fact that in nitric -nitrous solutions, Pd exists as [Pd(NO 2 ) n ] 22n (n ¼ 1, 2) complexes, which are extracted by organic sulfides much faster (time of the phase contact is 10 s) and better [18,19] than aquanitrato- [20] or chlorocomplexes [21] of Pd. Notice, that the fast kinetics of extraction allows one to diminish radiolysis effects when working with real HLW and using centrifugal extractors.…”

Facilitated transport of Pd(II) through a supported liquid membrane (SLM) containing N,N,N′,N′-tetra-(2-ethylhexyl) thiodiglycolamide T(2EH)TDGA: A novel carrier

“…Since the target metal palladium is a soft acid, its selective extraction is possible with soft donor based extractants containing N/S atoms. Based upon this presumption several extractants, namely, tertiary and quaternary amines [7,8], ␣-benzoin oxime (ABO) [9], dioctyl sulphides [10], trialkylphosphine sulphide (TIPS) [11], bis-(2-ethylhexyl) sulphoxide (BESO) [12] and benzoylmethylene triphenylphosphorane (BMTTP) [13], have been developed at various laboratories. Recently, a novel ligand of the class thiodiglycolamides, namely, N,N,N ,N -tetra(2-ethylhexyl)thiodiglycolamide (T(2EH)TDGA) has been synthesized in our laboratory and studied for extraction behavior of palladium from simulated high level waste (SHLW) solution [14,15].…”

Extraction of palladium(II) from nitric acid solutions with diglycolthioamide

“…A variety of extractants have been investigated for the extraction of palladium, such as tertiary and quaternary amines (Mezhov et al, 2002a, b), α-benzoin oxime (Dakshinamoorthy et al, 2008), dialkyl sulfides (Al-Bazi and Preiser, 1987), trialkylphosphine sulfide (Daoud et al, 1992), dialkyl sulfoxide (Guyon et al, 1994) and benzoylmethylene triphenylphosphorane (Mohan Raj et al, 2006). Literature investigation suggests that most of the reported researches suffer from some limitations such as low extraction power, poor selectivity and use of phase modifiers.…”