Catalitico eletrocondutivo porous compound material; process for its production catalitico of eletrolise; electrode; the process for renewing the coating of an electrode of eletrolise used; case COnverter a dimensionally stable dimensionally stable anode; anode; process eletrolise and production of chlorine / caustico

摘要

A porous high surface area composite electroconductive catalytic material, particularly as electrocatalyst for electrolysis electrodes, comprises a porous pre-formed matrix which is a catalytic mixed crystal material of at least one platinum group metal oxide and at least one valve metal oxide throughout which a subsequently-added additional catalyst preferably consisting of at least one platinum group metal and or oxide is dispersed by chemideposition in an oxidizing or reducing atmosphere preferably followed by an annealing post heat treatment. The porous matrix may be ruthenium-titanium oxide and the additional catalyst advantageously comprises at least two oxides of ruthenium, rhodium, palladium and iridium other combinations being possible.