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The extraction properties and mechanism of Pd(Ⅱ) with petroleum sulfoxide (PSO) which is a neutral extractant were studied in nitric acid solution.By investigating the influence of concentration of PSO and acidity on the reaction,the composition of extracted complex was determined as Pd(NO 3) 2·2PSO.The extraction equilibrium constant and the parameters of thermodynamic were also calculated.Meanwhile,the first order reaction with respect to the concentration of Pd(Ⅱ) was verified.
The extraction properties and mechanism of Pd (II) with petroleum sulfoxide (PSO) which is a neutral extractant were studied in nitric acid solution. By investigating the influence of concentration of PSO and acidity on the reaction, the composition of extracted complex was determined as Pd (NO 3) 2 · 2PSO. The extraction equilibrium constant and the parameters of thermodynamic were also calculated. Meanwhile, the first order reaction with respect to the concentration of Pd (Ⅱ) was verified.