Research output: Contribution to journal › Article › peer-review
Thermodynamics of arsenates, selenites and sulphates in oxidising zone of sulphides ore deposits. VIII. Field of Thermal Stability of Synthetic Analog of Chalcomenite, its Dehydration and Dissociation. / Fokina, E.L.; Klimova, E.V.; Charykova, M.V.; Krivovichev, V.G.; Platonova, N.V.; Semenova, V.V.; Depmeier, W.
In: Geology of Ore Deposits, Vol. 56, No. 7, 2014, p. 538-545.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Thermodynamics of arsenates, selenites and sulphates in oxidising zone of sulphides ore deposits. VIII. Field of Thermal Stability of Synthetic Analog of Chalcomenite, its Dehydration and Dissociation
AU - Fokina, E.L.
AU - Klimova, E.V.
AU - Charykova, M.V.
AU - Krivovichev, V.G.
AU - Platonova, N.V.
AU - Semenova, V.V.
AU - Depmeier, W.
PY - 2014
Y1 - 2014
N2 - © 2014, Pleiades Publishing, Ltd. The objective of this paper is to study the thermal stability of the synthetic analog of chalcomenite, CuSeO3 · 2H2O, and its dehydration and dissociation, in an experimental context. The study has been carried out by a comprehensive application of thermogravimetry (TG), differential scanning calorimetry (DSC), and high-temperature X-ray diffraction at a temperature range of 25–600°C. It has been established that CuSeO3 · 2H2O dehydrates at 202–264°C in three stages corresponding to the formation of intermediate CuSeO3 · 2H2O and CuSeO3 · 1/3H2O hydrate phases. At 480–595°C anhydrous CuSeO3 breaks down into CuO and SeO2 via the formation of a Cu4O(SeO3)3 phase. Enthalpies of the reactions at each stage of the CuSeO3 · 2H2O dehydration and CuSeO3 dissociation have been determined and their kinetic analysis has been carried out.
AB - © 2014, Pleiades Publishing, Ltd. The objective of this paper is to study the thermal stability of the synthetic analog of chalcomenite, CuSeO3 · 2H2O, and its dehydration and dissociation, in an experimental context. The study has been carried out by a comprehensive application of thermogravimetry (TG), differential scanning calorimetry (DSC), and high-temperature X-ray diffraction at a temperature range of 25–600°C. It has been established that CuSeO3 · 2H2O dehydrates at 202–264°C in three stages corresponding to the formation of intermediate CuSeO3 · 2H2O and CuSeO3 · 1/3H2O hydrate phases. At 480–595°C anhydrous CuSeO3 breaks down into CuO and SeO2 via the formation of a Cu4O(SeO3)3 phase. Enthalpies of the reactions at each stage of the CuSeO3 · 2H2O dehydration and CuSeO3 dissociation have been determined and their kinetic analysis has been carried out.
U2 - 10.1134/S1075701514070058
DO - 10.1134/S1075701514070058
M3 - Article
VL - 56
SP - 538
EP - 545
JO - Geology of Ore Deposits
JF - Geology of Ore Deposits
SN - 1075-7015
IS - 7
ER -
ID: 5749559