2014-Sustainable Industrial Processing Summit
SIPS 2014 Volume 6: Rare Earths & Ionic Liquids
| Editors: | Kongoli F |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2014 |
| Pages: | 432 pages |
| ISBN: | 978-1-987820-08-9 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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PHASE EQUILIBRIUM IN LANTHANIDE HALIDE SYSTEMS: COMPARISON BETWEEN THE MBr-LaBr3 AND MBr-CeBr3 SYSTEMS
Weiping Gong1; Marcelle Gaune-Escard2;1HUIZHOU UNIVERSITY, Huizhou, China; 2ECOLE POLYTECHNIQUE, IUSTI, UNIVERSITE DE PROVENCE, Marseille, France;
Type of Paper: Regular
Id Paper: 160
Topic: 11
Abstract:
This paper reports thermodynamic calculations on the LaBr3, CeBr3 compounds and MBr-LaBr3, MBr-CeBr3 binary systems over the entire temperature and composition range. The Gibbs energies of LaBr3 and CeBr3 were evaluated using an independent polynomial to fit the experimental heat capacity. A two sub-lattice ionic solution model (M+)P : (Br-, LnBr6-3, LnBr3)Q (Ln=La, Ce) was adopted to describe the liquid phase and the thermodynamic parameters for each phase in the MBr-LaBr3 and MBr-CeBr3 systems were reassessed by using available experimental information on phase diagram and thermodynamic properties. A comparison between the calculated phase diagram and thermodynamic quantities of the MBr-LaBr3 and MBr-CeBr3 systems was made and a discussion was provided.