Thermal characterisation of chemically reduced electrolytic manganese dioxide

Liu, B; Thomas, PS; Williams, RP; Donne, SW

Thermal characterisation of chemically reduced electrolytic manganese dioxide

Liu, B Thomas, PS

Williams, RP Donne, SW

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Publication Type:: Journal Article
Citation:: Journal of Thermal Analysis and Calorimetry, 2005, 80 (3), pp. 625 - 629
Issue Date:: 2005-06-01

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Field	Value	Language
dc.contributor.author	Liu, B	en_US
dc.contributor.author	Thomas, PS https://orcid.org/0000-0001-6962-2121	en_US
dc.contributor.author	Williams, RP	en_US
dc.contributor.author	Donne, SW	en_US
dc.date.issued	2005-06-01	en_US
dc.identifier.citation	Journal of Thermal Analysis and Calorimetry, 2005, 80 (3), pp. 625 - 629	en_US
dc.identifier.issn	1388-6150	en_US
dc.identifier.uri	http://hdl.handle.net/10453/580
dc.description.abstract	Samples of electrolytic manganese dioxide (EMD) were chemically reduced using 2-propanol under reflux (82°C) for 1, 2, 3, 6 and 24 h intervals. XRD analysis showed that the γ-MnO2 structure was preserved although the lattice dimensions were observed to increase with increasing degree of reduction to accommodate the intercalation of protons. The exception was the 24 h reduced sample which contained two phases; γ -MnO2 and γ -MnOOH. Three regions of decomposition in the range of 50 to 1000°C were observed using thermogravimetric analysis coupled with mass spectrometry (TG-MS) and were accounted for as water removal below 390°C, reduction of MnO2 to Mn2O3 between 400 and 600°C, and Mn2O3 to Mn3O4 between 600 and 1000°C. Again the exception proved to be the 24 h reduced sample which was observed to decompose predominantly in one step between 400 and 600°C directly to Mn3O4. © 2005 Akadémiai Kiadó Budapest.	en_US
dc.relation.ispartof	Journal of Thermal Analysis and Calorimetry	en_US
dc.relation.isbasedon	10.1007/s10973-005-0704-8	en_US
dc.subject.classification	Physical Chemistry	en_US
dc.title	Thermal characterisation of chemically reduced electrolytic manganese dioxide	en_US
dc.type	Journal Article
utslib.citation.volume	3	en_US
utslib.citation.volume	80	en_US
utslib.for	0306 Physical Chemistry (incl. Structural)	en_US
utslib.for	0303 Macromolecular and Materials Chemistry	en_US
utslib.for	0399 Other Chemical Sciences	en_US
dc.location.activity	Coffs Harbour, NSW
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Mathematical and Physical Sciences
pubs.organisational-group	/University of Technology Sydney/Strength - CBI - Centre for Built Infrastructure
utslib.copyright.status	closed_access
pubs.issue	3	en_US
pubs.publication-status	Published	en_US
pubs.volume	80	en_US

Abstract:

Samples of electrolytic manganese dioxide (EMD) were chemically reduced using 2-propanol under reflux (82°C) for 1, 2, 3, 6 and 24 h intervals. XRD analysis showed that the γ-MnO2 structure was preserved although the lattice dimensions were observed to increase with increasing degree of reduction to accommodate the intercalation of protons. The exception was the 24 h reduced sample which contained two phases; γ -MnO2 and γ -MnOOH. Three regions of decomposition in the range of 50 to 1000°C were observed using thermogravimetric analysis coupled with mass spectrometry (TG-MS) and were accounted for as water removal below 390°C, reduction of MnO2 to Mn2O3 between 400 and 600°C, and Mn2O3 to Mn3O4 between 600 and 1000°C. Again the exception proved to be the 24 h reduced sample which was observed to decompose predominantly in one step between 400 and 600°C directly to Mn3O4. © 2005 Akadémiai Kiadó Budapest.

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