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Thermal stability of synthetic aurichalcite - implications for making mixed metal oxides for use as catalysts

Frost, Ray L., Locke, Ashley J., Hales, Matthew C., & Martens, Wayde N. (2008) Thermal stability of synthetic aurichalcite - implications for making mixed metal oxides for use as catalysts. Journal of Thermal Analysis and Calorimetry, 94(1), pp. 203-208.

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Abstract

TG combined with MS has been used to study the thermal decomposition of a synthetic aurichalcite with varying copper-zinc ratios from 0.1:0.9 to 0.5:0.5. In general, five decomposition steps are observed at 235, 280, 394, 428 and 805 degrees Celsius. The principal mass loss step increases in temperature from 255 degrees Celsius (0.1/0.9) to 300 degrees Celsius (0.5/0.5). MS using ion current curves show that the OH units and carbonate units decompose simultaneously and the two decomposition steps after the main decomposition are attributed to the decomposition of ZnCO3 and CuCO3. A higher temperature decomposition at around 805 degrees Celsius, based upon the ion current curves is assigned to the decomposition of CuO to Cu. The thermal decomposition of aurichalcite offers a method of preparing metal oxides mixed at the molecular level making the thermally activated aurichalcites as suitable for use as catalysts

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16 citations in Web of Science®

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ID Code: 15069
Item Type: Journal Article
Keywords: aurichalcite, catalysts, mixed metal oxides, dehydration, dehydroxylation, de, carbonation, thermogravimetric analysis
DOI: 10.1007/s10973-007-8634-2
ISSN: 1572-8943
Subjects: Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > INORGANIC CHEMISTRY (030200) > Transition Metal Chemistry (030207)
Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > INORGANIC CHEMISTRY (030200)
Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > PHYSICAL CHEMISTRY (INCL. STRUCTURAL) (030600) > Catalysis and Mechanisms of Reactions (030601)
Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > PHYSICAL CHEMISTRY (INCL. STRUCTURAL) (030600) > Structural Chemistry and Spectroscopy (030606)
Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > INORGANIC CHEMISTRY (030200) > Solid State Chemistry (030206)
Divisions: Past > QUT Faculties & Divisions > Faculty of Science and Technology
Copyright Owner: Copyright 2008 Springer
Copyright Statement: The original publication is available at SpringerLink http://www.springerlink.com
Deposited On: 09 Oct 2008
Last Modified: 29 Feb 2012 23:46

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