Thermal decomposition of natural iowaite
Frost, Ray L. & Erickson, Kristy L. (2004) Thermal decomposition of natural iowaite. Journal of Thermal Analysis and Calorimetry, 78(2), pp. 367-373.
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Abstract
The thermal decomposition of natural iowaite of formula
Mg6Fe2(Cl,(CO3)0.5)(OH)16.4H2O was studied by using a combination of
thermogravimetry and evolved gas mass spectrometry. Thermal decomposition
occurs over a number of mass loss steps at 60 degrees Celsius attributed to dehydration, 266 degrees Celsius and 308 degrees Celsius assigned to dehydroxylation of ferric ions, at 551 degrees Celsius attributed to decarbonation and dehydroxylation, and 644, 703 and 761 degrees Celsius attributed to further dehydroxylation. The mass spectrum of carbon dioxide exhibits a maximum at 523 degrees Celsius. The use of TG coupled to MS shows the complexity of the thermal decomposition of iowaite.
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| ID Code: | 823 |
|---|---|
| Item Type: | Journal Article |
| Keywords: | hydrotalcite, iowaite, pyroaurite, Raman spectroscopy, infrared spectroscopy |
| DOI: | 10.1023/B:JTAN.0000046103.00586.61 |
| ISSN: | 1572-8943 |
| Subjects: | Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > INORGANIC CHEMISTRY (030200) |
| Divisions: | Past > QUT Faculties & Divisions > Faculty of Science and Technology |
| Copyright Owner: | Copyright 2004 Springer Verlag |
| Copyright Statement: | The original publication is available at SpringerLink. |
| Deposited On: | 11 Mar 2005 |
| Last Modified: | 29 Feb 2012 23:08 |
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