The Mechanism of Selective Separation of Antimony from Chloride Leachate of Copper Anode Slime

The mechanism of selective separation antimony from copper anode slime leachate is studied. Density functional theory used to calculate the unit cell energy, band structure, density states, number charge distributions and overlap populations SbCl3 hydrolysates SbOCl, Sb3O4Cl Sb4O5Cl2, these are studied by infrared spectroscopy. pathways for formation Sb4O5Cl2 in water, ethanol ethylene glycol systems clarified. results show that energy SbOCl lowest, structure more stable. exhibits strong electronic localization, weak orbital expansion, stability; has a wider pseudoenergy gap, its covalent bonds stronger than those Sb4O5Cl2. Hydrolysis leads preferential generation stable structures. distribution, sizes populations, spectra indicate been hydrolysed. There two basic paths process alcoholysis: water- or alcohol-ionized hydroxyl replaces one chlorine atom form an [Sb(OH)Cl2] monomer, as degree hydrolysis increases, H Cl atoms removed SbOCl. Conversely, Sb3O4Cl, Sb may be formed [Sb-OH] monomer generated directly alcohol-ionised groups, replace group