Published January 2021 | Version v1
Journal article Metadata-only

Thermodynamic properties of stable states cerium compounds in fused 3LiCl-2KCl eutectic

Creators

  • 1. College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001 (China)
  • 2. Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, Harbin Engineering University, Harbin 150001 (China)
  • 3. Department of Rare Metals and Nanomaterials, Institute of Physics and Technology, Ural Federal University, Ekaterinburg 620002 (Russian Federation)
  • 4. Institute of High-Temperature Electrochemistry UB RAS, Ekaterinburg 620990 (Russian Federation)

Description

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 Ce2O3 were calculated. • The Pourbaix diagram was drawn and the characteristics of the stable cerium species were summarized. 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 Ce3+ with O2− ions have been established. The solubility constants of cerium oxychloride and oxide compounds at different temperatures were determined. Principal thermodynamic data of CeOCl and Ce2O3 were calculated. The Pourbaix (potential-pO2−) diagram was drawn and summarizes the properties of stable cerium species in the melt.

Availability note (English)

Available from http://dx.doi.org/10.1016/j.jct.2020.106260

Additional details

Identifiers

DOI
10.1016/j.jct.2020.106260;
PII
S002196142030522X;

Publishing Information

Journal Title
Journal of Chemical Thermodynamics
Journal Volume
152
Journal Page Range
vp.
ISSN
0021-9614
CODEN
JCTDAF

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
54016040
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Descriptors DEI
CERIUM; CERIUM IONS; CERIUM OXIDES; DIAGRAMS; ELECTRODES; EUTECTICS; INTERACTIONS; MOLTEN SALTS; OXYCHLORIDES; OXYGEN; OXYGEN IONS; POLONIUM IONS; POTENTIOMETRY; SOLUBILITY; TEMPERATURE RANGE; THERMODYNAMIC PROPERTIES; THERMODYNAMICS
Descriptors DEC
CERIUM COMPOUNDS; CHALCOGENIDES; CHARGED PARTICLES; CHEMICAL ANALYSIS; CHLORINE COMPOUNDS; ELEMENTS; HALOGEN COMPOUNDS; INFORMATION; IONS; METALS; NONMETALS; OXIDES; OXYGEN COMPOUNDS; OXYHALIDES; PHYSICAL PROPERTIES; QUANTITATIVE CHEMICAL ANALYSIS; RARE EARTH COMPOUNDS; RARE EARTHS; SALTS; TITRATION; VOLUMETRIC ANALYSIS

Optional Information

Copyright
Copyright (c) 2020 Elsevier Ltd.