Abstract
Titanium exhibits considerable inertness in sulfate solutions of thiocyanate at pH1...6. Electrochemical oxidation of thiocyanate was carried out on electrodes obtained by thermal decomposition of ruthenium compounds on the surface of titanium. In solutions with concentration of thiocyanate 0.1...1.0 M, pH 0.1 ... 6, at the potential above 0.7 V, cyanide and adsorbed sulfur are formed, the amount of which increases with decreasing pH of the solution. Solutions of thiocyanate with a pH of less than 0.1 are unstable due to the formation of volatile thiocyanate acid, which decomposes to form sulfur.
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