Simulation of the effect of hydroxyethylidenediphosphonic acid on the kinetics of copper(II) oxide dissolution in sulfuric acid |
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| Authors: | O N Plakhotnaya I G Gorichev V V Batrakov A D Izotov |
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| Institution: | (1) Moscow State Pedagogical University, ul. Malaya Pirogovskaya 1, Moscow, 119882, Russia;(2) Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow, 119991, Russia |
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| Abstract: | The effect of hydroxyethylidenediphosphonic acid (HEDP) on the kinetics of copper(II) oxide dissolution in aqueous sulfuric acid was studied. The addition of HEDP in acidic media decreases the CuO dissolution rate. The simulation of these processes showed that the inhibiting effect is due to the decrease in the concentration of the intermediate compound (CuOH+), which restricts the dissolution of Cu2+ ions, due to adsorption of the HEDP ions (H4Y?) on the oxide surface. |
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