Solvation of ions. Some applications. I. Electrorefining of silver by means of silver sulphate solutions in mixtures of water with 3-hydroxypropionitrile

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Abstract
High purity, adherent, non-dendritic, porous cathodes can be produced at 100-300 MV by electrolysing at > 98% efficiency a silver anode at 30-35�C for 48 h in a simple vertical cell without diaphragm at a current density of 100-150 A/m2. The electrolyte solution contains water, 150 g/l. 3-hydroxypropionitrile, 140 g/l. sulphuric acid and 0.2M silver sulphate.