Decarbonation curves and associated thermodynamic data for synthetic Cd-dolomites CdMg(CO3)2, CdMn(CO3)2 and CdZn(CO3)2

Tareen, J. A. K. and Fazeli, A. R. and Basavalingu, B. and Bhandige, G. T. (1995) Decarbonation curves and associated thermodynamic data for synthetic Cd-dolomites CdMg(CO3)2, CdMn(CO3)2 and CdZn(CO3)2. Journal of Thermal Analysis, 44 (4). pp. 937-954.

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Abstract

Decarbonation curve for the synthetic dolomite analogues; (Cd-dolomites) were determined for CdMg(CO3)(2), CdMn(CO3))(2) and CdZn(CO3)(2) under CO2 pressure of up to 2.5 kbar. All the three double carbonates were completely disordered at the decomposition temperatures and hence the thermodynamic data (Standard enthalpy; Delta H-f degrees, Standard free energy; Delta G(f) degrees) retrieved from the univariant decarbonation curve corresponds to the disordered phases. They are: GRAPHICS] The mixing enthalpies and free energies for the formation of the disordered 1:1 solid solution phases are: GRAPHICS] The thermodynamic data (Delta H-f degrees, Delta G(f) degrees and Delta H-r degrees, Delta G(r) degrees showed a positive correlation with the decomposition temperatures. The mixing energies of the disordered double carbonates also show a direct correlation with the cationic size differences.

Item Type:	Article
Subjects:	F Earth Science > Geology
Divisions:	Department of > Earth Science
Depositing User:	Users 23 not found.
Date Deposited:	20 May 2021 08:30
Last Modified:	27 May 2022 10:20
URI:	http://eprints.uni-mysore.ac.in/id/eprint/16508

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