Electrochemical oxidation of thiocyanates on a boron-doped diamond electrode in acid media |
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| Authors: | T A Kenova I S Vasilieva V L Kornienko V P Varnin |
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| Institution: | 1. Institute of Chemistry and Chemical Technology, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russia
2. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Moscow, Russia
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| Abstract: | The kinetics and selectivity of the oxidation of thiocyanate on a boron-doped diamond (BDD) electrode in a 0.5 M solution of H2SO4 were studied. An analysis of the cyclic voltammetry curves showed that the oxidation of SCN? was irreversible and occurred with diffusion control in the range of water decomposition potentials. The obtained kinetic dependences can be described by the pseudo-first order equation. The apparent rate constant depends on the current density and initial concentration of the reagent. The main product of oxidation at low current density and high concentration of SCN? was CN?. |
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