Abstract
The electrochemical reduction of NO + ion in concentrated sulphuric acid has been studied on gold and platinum electrodes in the temperature range from 4·5 to 55·5°C with the rotating disk electrode, linear potential-sweep voltammetry and chronopotentiometry. On gold, NO + is reduced to NO, the reaction being a reversible one-electron transfer reaction. The experimental diffusion coefficients of the NO + ion and NO molecule are evaluated. On platinum, in the potential region where reduction of NO + ion and oxidation of NO occur, oxides formed on the metal interfere, thus making the interpretation of the process difficult.
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