Abstract
Abstract The extraction behavior of palladium(II) from the aqueous ammonium chloride solutions with the title extractant in toluene was investigated in terms of the equilibrium and the kinetics, while the aqueous solubility and the interfacial adsorption equilibrium of the extractant were estimated. The extraction rate of the 1:2 palladium(II)–extractant complex was explained by the interfacial reaction model, in which the ratedetermining steps were assumed to be the elementary reactions between the aquatrichloro- and tetrachloropalladate(II) in the aqueous phase and the extractant molecule adsorbed at the interface.
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