Thermogravimetric analysis of selected group II carbonate minerals – implication for the geosequestration of greenhouse gases

Frost, Ray L., Martens, Wayde N., & Hales, Matthew C. (2009) Thermogravimetric analysis of selected group II carbonate minerals – implication for the geosequestration of greenhouse gases. Journal of Thermal Analysis and Calorimetry, 95(3), pp. 999-1005.

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The precursors of carbonate minerals have the potential to react with greenhouse gases to form many common carbonate minerals. The carbonate bearing minerals, magnesite, calcite, strontianite and witherite, were synthesised and analysed using a combination of thermogravimetry and evolved gas mass spectrometry. The DTG curves show that as both the mass and the size of the metal cationic radii increase, the inherent thermal stability of the carbonate also increases dramatically. It is proposed that this inherent effect is a size stabilisation relationship between that of the carbonate and the metal cation. As the cationic radius increases in size, the radius approaches and in the case of Sr2+ and Ba2+ exceeds that of the overall size of the carbonate anion. The thermal stability of these minerals has implications for the geosequestration of greenhouse gases. The carbonates with the larger cations show significantly greater stability.

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ID Code: 17819
Item Type: Journal Article
Refereed: Yes
Keywords: Nesquehonite, Hydromagnesite, Thermo-gravimetric analysis
DOI: 10.1007/s10973-008-9196-7
ISSN: 1572-8943
Subjects: Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > PHYSICAL CHEMISTRY (INCL. STRUCTURAL) (030600)
Divisions: Past > QUT Faculties & Divisions > Faculty of Science and Technology
Past > Schools > School of Physical & Chemical Sciences
Copyright Owner: Copyright 2009 Springer
Copyright Statement: The original publication is available at SpringerLink
Deposited On: 12 Feb 2009 23:25
Last Modified: 29 Feb 2012 14:02

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