Kinetics of chlorine evolution on dimensionally stable anodes at high currents: Extending the concept of a self-accelerating electrode process |
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Authors: | S V Evdokimov |
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Institution: | (1) Russian Federation Scientific Center, Karpov Research Institute of Physical Chemistry, ul. Vorontsovo Pole 10, 103064 Moscow, Russia |
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Abstract: | The chlorine evolution kinetics are studied by taking steady-state polarization measurements on rotating disc electrodes (dimensionally
stable ones and those made of RuO2) in solutions with various chloride concentration, at various acidity and temperatures, at current densities of up to 4 A/cm2. At high temperatures and chloride concentrations, linear parts with an abnormally low slope of about 20 mV are observed
in anodic polarization curves. Their appearance is attributed to the chlorine reaction self-acceleration due to a change in
the chlorine mass transport mechanism in the anode’s porous coating. |
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