par Schmitz, Guy 
Référence PCCP. Physical chemistry chemical physics, 12, page (6605-6615)
Publication Publié, 2010
Référence PCCP. Physical chemistry chemical physics, 12, page (6605-6615)
Publication Publié, 2010
Article révisé par les pairs
| Résumé : | The kinetics of the iodine oxidation by hydrogen peroxide is a complicated function of the concentrations of iodine, hydrogen peroxide, perchloric acid and iodate. A proposed model in eight steps explains the new experimental results. It explains also the effect of the concentrations at the steady state of the hydrogen peroxide decomposition catalyzed by iodine and iodate. Without iodate added initially, the iodine oxidation by hydrogen peroxide is preceded by an induction period that depends on the oxygen concentration. A simple extension of the proposed model gives a semi-quantitative explanation of the oxygen effect and allows simulations of the Bray-Liebhafsky oscillations at 25°C. |
