Process for the on-site production of ultra-pure hydrogen peroxide for the electronics industry, involves the use of an organometallic complex of cobalt and the reduction of oxygen in an acidic medium

The hydrogen peroxide is obtained by the oxidation of a cobalt (II) complex in an acidic medium, the organic ligand being a polyazabicylo(6,6,6)eicosane and the installation being on-site and coupled with an additional purification unit if necessary. The process comprises the stages : (a) reduction of dioxygen in an acid medium with an organometallic complex on an inert support which is capable of being oxidized; and (b) separation of the oxidized complex obtained from the formed hydrogen peroxide by solid/liquid extraction; An Independent claim is also included for the installation by which the process is carried out. Procédé de préparation de peroxyde d'hydrogène comprenant les étapes suivantes :a) une étape de réduction du dioxygène en milieu acide avec un complexe organométallique, et b) une étape de séparation du complexe organométallique oxydé résultant de l'étape a) et du peroxyde d'hydrogène par extraction solide/ liquide.