Authors:
B. Liu University of Technology Sydney Department of Chemistry, Materials and Forensic Sciences Sydney Australia NSW 2007 PO Box 123 Broadway Sydney Australia NSW 2007 PO Box 123 Broadway

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P. Thomas University of Technology Sydney Department of Chemistry, Materials and Forensic Sciences Sydney Australia NSW 2007 PO Box 123 Broadway Sydney Australia NSW 2007 PO Box 123 Broadway

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A. Ray University of Technology Sydney Department of Chemistry, Materials and Forensic Sciences Sydney Australia NSW 2007 PO Box 123 Broadway Sydney Australia NSW 2007 PO Box 123 Broadway

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R. Williams Delta-EMD Australia Pty Limited Mayfield West Australia 2304 McIntosh Drive Mayfield West Australia 2304 McIntosh Drive

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S. Donne University of Newcastle Discipline of Chemistry Callaghan Australia NSW 2308 Callaghan Australia NSW 2308

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Abstract  

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 (82C), 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 600C encompassing the water loss region up to 390C 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 600C. 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.

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation
1969
Volumes
per Year
1
Issues
per Year
24
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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