Abstract
Abstract The kinetics of the oxidation of a cobaltous complex of ethylenediaminetetraacetic acid (EDTA) is determined volumetrically at 50.0°C in the presence of several kinds of carbon as catalysts. One mole of oxygen was used to oxidize four Co(II) ions, and all the Co(II) ions were oxidized to Co(EDTA)− ions quantitatively. The rate of oxygen uptake was found to change from zeroth order to first order with respect to the complex ion during the course of oxidation; it was also found to be first order with the oxygen pressure and the amount of the carbon catalyst. The catalytic activity of the carbon was correlated to the quantity of surface basic oxides of the carbon. A possible mechanism which can account for the above results is proposed.
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