Mechanism for decomposition of aurichalcite—A controlled rate thermal analysis study
(2008) Mechanism for decomposition of aurichalcite—A controlled rate thermal analysis study . Thermochimica Acta 468(1-2):pp. 81-86.
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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.
| Item Type: | Journal Article |
|---|---|
| Status: | Published |
| Keywords: | aurichalcite, catalysts, mixed metal oxides, dehydration, dehydroxylation, de-carbonation, controlled rate thermal analysis, CRTA |
| Subjects: | 250000 Chemical Sciences > 250100 Physical Chemistry (incl. Structural) 250000 Chemical Sciences > 250100 Physical Chemistry (incl. Structural) > 250102 Chemistry of Catalysis 250000 Chemical Sciences > 250100 Physical Chemistry (incl. Structural) > 250103 Colloid and Surface Chemistry |
| ID Code: | 12605 |
| Deposited By: | Frost, Ray |
| Deposited On: | 21 February 2008 |
| Alternative Locations: | http://dx.doi.org/10.1016/j.tca.2007.11.024 |
| Copyright Owner: | Copyright 2008 Elsevier |
| Copyright Statement: | Reproduced in accordance with the copyright policy of the publisher. |