Thermodynamic properties of stable states cerium compounds in fused 3LiCl-2KCl eutectic. (January 2021)

• Record Type: Journal Article
• Authors: Xu, Minghui; Smolenski, Valeri; Liu, Qi; Novoselova, Alena; Jiang, Kewei; Yu, Jing; Liu, Jingyuan; Chen, Rongrong; Zhang, Hongsen; Zhang, Milin; Wang, Jun
• Is Part Of: Journal of chemical thermodynamics. Volume 152(2021)
• Publication Date: 2021-01
• Subjects: Potentiometric titration -- Molten salt -- Cerium trichloride -- Thermodynamics -- Pourbaix diagram; Thermodynamics -- Periodicals; Thermochemistry -- Periodicals; Thermodynamique -- Périodiques; Thermochimie -- Périodiques; Thermochemistry; Thermodynamics; Periodicals; 541.369
• DOI: 10.1016/j.jct.2020.106260
• Languages: English
• ISSNs: 0021-9614

Abstract

Graphical abstract: Highlights: The interaction of oxygen and cerium-free ions in molten 3LiCl-2KCl eutectic K was studied. Stable states of cerium compounds and the mechanism of interaction have been established. The solubility constants and principal thermodynamic data of CeOCl and Ce2 O3 were calculated. The Pourbaix diagram was drawn and the characteristics of the stable cerium species were summarized. Abstract: The interaction of oxygen and cerium-free ions in molten 3LiCl-2KCl eutectic in the temperature range of (723–823) K was studied by the method of potentiometric titration using YZME electrodes. Stable states of cerium compounds in the Ce–O system and the mechanism of interaction of Ce 3+ with O 2− ions have been established. The solubility constants of cerium oxychloride and oxide compounds at different temperatures were determined. Principal thermodynamic data of CeOCl and Ce2 O3 were calculated. The Pourbaix (potential-pO 2− ) diagram was drawn and summarizes the properties of stable cerium species in the melt.