Mechanism for decomposition of aurichalcite—A controlled rate thermal analysis study
Frost, Ray L., Locke, Ashley J., Martens, Wayde N., Hales, Matthew C., Vagvolgyi, Veronika, & Kristof, Janos (2008) Mechanism for decomposition of aurichalcite—A controlled rate thermal analysis study. Thermochimica Acta, 468(1-2), pp. 81-86.
Abstract
Controlled rate thermal analysis (CRTA) of a series of synthetic aurichalcite (Zn,Cu2+)5(CO3)2(OH)6 with the ratio of Cu/Zn varying from 0.1 to 0.5 proves that the dehydroxylation and carbonate loss occur as non-isothermal and isothermal decompositions. The temperature of the thermal decomposition increases as the Cu/Zn ratio increases. Thermal decomposition of aurichalcite provides a method for preparing mixed oxide catalysts at the molecular level as opposed to the particle level.
CRTA technology enables separation of the processes of dehydration, dehydroxylation and decarbonation. X-ray diffraction of the products of the thermal decomposition proved to be a mixture of the oxides ZnO and Cu2O.
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| ID Code: | 12605 |
|---|---|
| Item Type: | Journal Article |
| Keywords: | aurichalcite, catalysts, mixed metal oxides, dehydration, dehydroxylation, de, carbonation, controlled rate thermal analysis, CRTA |
| DOI: | 10.1016/j.tca.2007.11.024 |
| ISSN: | 0040-6031 |
| Subjects: | Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > PHYSICAL CHEMISTRY (INCL. STRUCTURAL) (030600) 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) > Colloid and Surface Chemistry (030603) |
| Divisions: | Past > QUT Faculties & Divisions > Faculty of Science and Technology |
| Copyright Owner: | Copyright 2008 Elsevier |
| Copyright Statement: | Reproduced in accordance with the copyright policy of the publisher. |
| Deposited On: | 21 Feb 2008 |
| Last Modified: | 29 Feb 2012 23:49 |
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