Solubility of CoCl sub 2 in molten NaCl-AlCl sub 3

Journal Article · Thu Feb 22 04:00:00 EST 1990 · Journal of Physical Chemistry; (USA)

DOI:https://doi.org/10.1021/j100367a081· OSTI ID:6712344

Wai, Chien; Bloom, I; Caveny, D; Blander, M ^[1]

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1. Argonne National Lab., IL (USA)

Measurements of the solubility of CoCl{sub 2} (in mole fraction units) in molten NaCl-AlCl{sub 3} solutions ranged from 2.2 {times} 10{sup {minus}4} to 6.15 {times} 10{sup {minus}2} in solvent compositions ranging from a mole fraction of AlCl{sub 3} (X{sub AlCl{sub 3}}) of 0.502-0.669. The steep increase in the solubility of CoCl{sub 2} as a function of X{sub AlCl{sub 3}} is well-represented by the coordination cluster theory. A solubility product (in ion fraction units) for CoCl{sub 2} of 4.7 {times} 10{sup {minus}15} is deduced from the measurements. The insolubility of CoCl{sub 2} near the 50-50 solvent composition is a consequence of the fact that the complexing of solid CoCl{sub 2} by AlCl{sub 3} to form Co(AlCl{sub 4}){sub 2} in solution is considerably weaker than the complexing of 2NaCl(1) to form 2NaAlCl{sub 4}(1).

• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 6712344
• Journal Information: Journal of Physical Chemistry; (USA), Journal Name: Journal of Physical Chemistry; (USA) Vol. 94:4; ISSN 0022-3654; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
CALCULATION METHODS
CHLORIDES
CHLORINE COMPOUNDS
CLUSTER MODEL
COBALT CHLORIDES
COBALT COMPOUNDS
DATA
DATA ANALYSIS
EXPERIMENTAL DATA
HALIDES
HALOGEN COMPOUNDS
INFORMATION
MATHEMATICAL MODELS
MEASURING INSTRUMENTS
MEASURING METHODS
MOLTEN SALTS
NUCLEAR MODELS
NUMERICAL DATA
SALTS
SOLUBILITY
TRANSITION ELEMENT COMPOUNDS