M.V. Inyukhin, A.P. Korzhavyi, V.V. Maksimov, V.K. Shatalov

Kaluga Branch of the Bauman Moscow State Technical University (Russia) 

The results of the study of Cu(II) to Cu(I) reduction process in chloride-sulfate solutions under the action of carbon monoxide at atmospheric pressure in the presence of palladium chloride(II) acting as catalyst are reported. This process is described by general equation:

            2Cu2+ +2SO2-4 +2Cl +CO+H O- 2 →Pd(II) 2CuCl+CO +2H +2SO2 +      2-4 .

It has been shown product mix in the sediment obtained hydrocarbonyl process.

Thus, the recovery process Cu(II) → Cu(I) with the action of CO is catalyzed by Pd(II) in the initial stage, and then develops in an autocatalytic mode with the subsequent redox decomposition intermediate. As a reducing agent serve ligand molecules of CO which are in activated state:

              CO+HO=CO +2H +2e2      2         +                     .

Inyukhin M.V., Korzhavyi A.P., Maksimov V.V., Shatalov V.K. Efficient technology for the extraction of non-ferrous metals from liquid production waste. Science Intensive Technologies. 2021. V. 22. № 1. P. 13−20. DOI:  https://doi.org/10.18127/j19998465-20210102 (In Russian).

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