DSC characterisation of chemically reduced electrolytic manganese dioxide

Publication Type:
Journal Article
Citation:
Journal of Thermal Analysis and Calorimetry, 2007, 88 (1), pp. 177 - 180
Issue Date:
2007-04-01
Filename Description Size
Thumbnail2006014095.pdf283.58 kB
Adobe PDF
Full metadata record
The thermal decomposition of electrolytic manganese dioxide (EMD), in an inert atmosphere, and the effect of chemical reduction on EMD, using 2-propanol under reflux (82°C), was investigated by differential scanning calorimetry (DSC). This study is an extension of a study investigating the thermal decomposition of EMD and reduced EMD by TG-MS (J. Therm. Anal. Cal., 80 (2005)625)). The DSC characterisation was carried out up to 600°C encompassing the water loss region up to 390°C and the first thermal reduction step. Water removal was observed in two distinct endothermic peaks (which were not deconvolved in the TG-MS) associated with the removal of bound water. For the lower degrees of chemical reduction, thermal reduction resulted in the formation of Mn2O3; for higher degrees of chemical reduction, the thermal reduction resulted in Mn3O4 at 600°C. In the DSC the thermal reduction of the EMD and chemically reduced specimen was observed to be endothermic. The reduced specimens, however, also showed an exothermic structural reorganisation. © Springer-Verlag 2007.
Please use this identifier to cite or link to this item: