Potential measurements of thorium tetrachloride in alkali halide solutions

Tumidajski, Peter J.; Flengas, S. N.

doi:10.1139/v91-069

Cited by 7 publications

(5 citation statements)

References 7 publications

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“…A summary of all formal potentials presented in this paper, as well as in previous publications from this laboratory (4,12), is given in Table VII and VIII. The data are presented as an EMF series at 1073 and 1173 K. The sequence…”

Section: Discussionmentioning

confidence: 98%

Potential Measurements of Reactive Metal Chlorides in Alkali Halide Solutions: II . Chromium

Tumidajski

Flengas

1991

J. Electrochem. Soc.

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The thermodynamic properties of the dilute solutions of the chromium chlorides were determined in the solvents NaC1, KC1, CsC1, or their equimolar mixtures between approximately 973 and 1173 K using an EMF technique. Galvanic and redox cells with Ag-AgC1 reference electrodes were used. The cells are described by (-)Cr/CrC12 -AC1//asbestos diaphragm//AgC1 -AC1/Ag(+) and (-)Ag/AgC1 -AC1//asbestos diaphragm//CrC12 -CrCI~ -AC1/Pt(+) where AC1 represents the alkali chloride solvent. The thermodynamic properties imply high]y nonideal systems in which the formation of complex species is indicated. A reacting system consisting of Cr metal immersed in a CrC13-KC1 solution was studied potentiometrically. It was found that when the redox reactions were completed, all potentials assume a common value. This potential could be calculated using a simple mass balance and the formal potential for Cr/Cr 2+ and Cr2+/ Cr 3 § systems determined in this study.

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Section: Discussionmentioning

confidence: 98%

Potential Measurements of Reactive Metal Chlorides in Alkali Halide Solutions: II . Chromium

Tumidajski

Flengas

1991

J. Electrochem. Soc.

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“…The cell design was similar to the chloride formation cells described elsewhere (3,4,7). The cell consisted of a nickel metal electrode immersed in the NiC1,-CoC1,-KC1 molten solution of known composition and a graphite chlorine electrode which also dipped into a molten solution of the same composition.…”

Section: Methodsmentioning

confidence: 99%

“…In previous publications from the authors, the thermodynamic properties of charge asymmetric molten salt solutions of metal chlorides with alkali halide solvents have been investigated by EMF measurements (1)(2)(3)(4)(5)(6)(7). The measurements provide valuable and practical information on: the feasibility of new pro-high-temperature batteries and energy storage devices.…”

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confidence: 99%

Thermodynamic properties of the NiCl₂–CoCl₂–KCl system

Tumidajski¹,

Pickles²

1995

Can. J. Chem.

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Abstract:The thermodynamic behavior of NiCI? in NiC1,-CoC1,KCI ternary solutions was investigated using formation cells of the type, (-)Ni/NiCl,-CoC1,-KClIC, C1, ( , , , , , , , , , (+). The values of the NiC1, activity coefficients indicate a non-ideal system consonant with the formation of complex species. The NiCl2 activity coefficients at 1000 K were fitted to the polynomial equation,whereThe experimental data were limited to the ranges 0 5 t 5 0.80 and 0.10 5 Y 5 0.5.Key words: molten salt, thermodynamic properties, nickel chloride, non-ideal solution, complex species.

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“…Some authors have observed a reaction between Th metal and ThCl 4 to form ThCl 2 [32,33]. Others have demonstrated the direct oxidation of Th metal to ThCl 4 [34,35]. These conflicting studies indicate the partial stability of ThCl 2 , showing that it is not a promising candidate for stabilizing the redox potential.…”

Section: Addition Of An Amphoteric Compoundmentioning

confidence: 99%

Corrosion Mitigation in Molten Salt Environments

Delpech,

Carrière,

Chmakoff

et al. 2024

Materials

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The aim of this paper is to present methods for corrosion mitigation in molten salt environments. The corrosion of structural materials depends directly on the redox potential of the salt. When the redox potential of the salt is higher than the standard potentials of the elements constituting the structural materials, corrosion occurs. If the reverse is true, no corrosion is observed. Herein, a methodology for calculating the theoretical potential of a molten salt is provided and compared with experimental measurements. Three ways to mitigate corrosion by modifying the salt redox potential are proposed: (i) using a soluble/soluble redox system; (ii) using a potentiostatic method; and (iii) using an amphoteric compound such as UCl3, TiCl2, or TiCl3. Immersion tests were conducted under the above conditions to validate the methodology.

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Potential measurements of thorium tetrachloride in alkali halide solutions

Cited by 7 publications

References 7 publications

Potential Measurements of Reactive Metal Chlorides in Alkali Halide Solutions: II . Chromium

Potential Measurements of Reactive Metal Chlorides in Alkali Halide Solutions: II . Chromium

Thermodynamic properties of the NiCl₂–CoCl₂–KCl system

Corrosion Mitigation in Molten Salt Environments

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Potential measurements of thorium tetrachloride in alkali halide solutions

Cited by 7 publications

References 7 publications

Potential Measurements of Reactive Metal Chlorides in Alkali Halide Solutions: II . Chromium

Potential Measurements of Reactive Metal Chlorides in Alkali Halide Solutions: II . Chromium

Thermodynamic properties of the NiCl2–CoCl2–KCl system

Corrosion Mitigation in Molten Salt Environments

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Thermodynamic properties of the NiCl₂–CoCl₂–KCl system