Investigation of the mechanism of hydrolytic dissolution of nickel sulfide in dilute sulfuric acid

The paper presents the results a study of the hydrolytic mechanism of dissolution of Nickel sulfide in dilute solutions of sulfuric acid. According to the obtained mathematical model of sulfide dissolution are established modes of interaction, determined by the details of the mechanism of the studied processes. Proposed relevant observable kinetic dependences reasonable schemes of interaction. Received rentgenospektralny spectra and STM images of the surface of Nickel sulfide. A mechanism is hydrolytic. The process is not accompanied by oxidation of sulfide sulfur. The limiting stage of hydrolytic dissolution process acts as the adsorption of hydronium ions, and the process proceeds under conditions of adsorption saturation.