KINETICS OF HYDROGEN PEROXIDE DECOMPOSITION IN AQUEOUS SULPHURIC ACID OVER Zn,Co OXIDES AND MIXED OXIDES

摘要

The kinetics of hydrogen peroxide decomposition has been studied on mixed Zn-Co oxides catalysts.Cobalt oxide possesses considerable catalytic activity over the ZnO.The rate of decomposition of H_2O_2 on mixed oxides increases with increasing concentration of cobalt oxide and in nitrogen medium.Kinetics of decomposition of hydrogen peroxide on mixed oxide catalysts is entirely heterogeneous.The energy of activation,as calculated from the Arrhenius equation,is 83.26 kJ mol~(-1)for sample D from B series.The rate is first order in all these samples.