| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 672704 | Thermochimica Acta | 2016 | 12 Pages |
Abstract
RE6UO12(s) (REÂ =Â La, Pr, Nd, Sm) was synthesized by citrate-nitrate combustion method. The synthesis condition for Pr6UO12(s) was optimized. Nonstoichiometry in these rare earth uranates in argon atmosphere was analysed using various techniques like thermogravimetry (TG), X-ray photo electron spectroscopy (XPS), chemical analysis and electrical conductivity measurements. Thermal expansions of RE6UO12(s) (REÂ =Â Pr and Sm) was studied in the temperature range 298-1273Â K by high temperature X-ray powder diffractometry and compared with that of similar rare earth compounds reported in the literature. Heat capacity of RE6UO12(s) (REÂ =Â La, Pr, Nd, Sm) was measured by differential scanning calorimetry in the temperature range 300-870Â K. Enthalpy, entropy and Gibbs energy functions of these compounds were computed from the measured heat capacity data.
Keywords
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Fluid Flow and Transfer Processes
Authors
Manjulata Sahu, K. Krishnan, Dheeraj Jain, M.K. Saxena, Smruti Dash,