Manganese Oxide — Reduction

Manganese oxide (MnO2) is often used in chemistry as an oxidizer but also, for example, as a cathode material in batteries. The STA measurement shows mass steps at approx. 600°C and 950°C which are due to the reduction of MnO2 into Mn2O3 and finally into Mn3O4. The values of 9.20% and 3.07% match exactly with the stoichiometrical values thus reflecting the high accuracy of the balance system. Endothermic DSC peaks with enthalpies of 432 J/g and 180 J/g were detected during the reduction steps. The endothermic DSC peak at 1200°C is due to a reversible structural transformation, which is observed at 1148°C upon cooling also as exothermal peak (dashed lines). (measurement with STA 449 F1 Jupiter®)

STA 449 F1 Jupiter®

With the STA 449 F1 Jupiter® NETZSCH is setting new standards. Unlimited configuration flexibility and unmatched performance are the foundations for a great variety of application possibilities in the fields of ceramics, metals, plastics, and composites over a broad temperature range (-150°C ... 2400°C).