Study on behavior and mechanism of extraction of Palladium(II) with unsymmetrical sulfoxide BSO

The behavior and mechanism of extraction of Palladium(11)with unsymmetrical sulfoxide BSO were studied. The results show that the percentage extraction of Pd(II) achieves 99.8% from 0.1 mol.L-1 HCl media with 0.3 mol.L-1 BSO-kerosene (their phase ratio 1:1) as an extractant after 5 min extraction vibration. The structure of the complex was discussed by slope analysis method and FT-IR spectra. When HCl concentration is less than 0.3 mol.L-1, BSO acts as a neutral ligand coordinated with Pd( II) and the composition of complex is [PdCl2.2BSO]((0)). When HCl concentration ranges from 1.0 mol.L-1 to 4.0 mol.L-1, the reaction of extracting of Pd(II) II) is acid ion association extraction and the composition of complex may be [H(+)hH(2)O.(BSO)(2)](2).[PdCl42-]((0)).