A potentiometric study of the behavior of a carbon-freon (C, CF/sub 4/) electrode in fluorine-containing halide melts

Journal Article · Sun Sep 01 04:00:00 EDT 1985 · Sov. Electrochem. (Engl. Transl.); (United States)

OSTI ID:5160668

Nekrasov, V N; Cherepanov, V B; Ivanovskii, L E; Zaikov, Yu P

It was previously noted that a graphite carbon electrode washed with gaseous carbon tetrafluoride should, at high temperatures, be reversible to fluoride ion in fluoride-containing melts. Its equilibrium potential should be determined by the partial pressure of the gaseous carbon tetrafluoride and by the activity of the fluoride ion in the melt. Since there was no previous information on specific studies in the electrochemical behavior of this carbon-freon electrode in halide melts, the authors conducted a potentiometric study of the electrochemical cells shown in this paper. In the experiments, the authors used analytical reagent-grade potassium fluoride (dihydrate), ultrapure sodium fluoride, and analytical reagent-grade lithium fluoride and ammonium fluoride. It is shown that the carbon-freon (C,CF/sub 4/) electrode is a reversible, second-order electrode in melts containing fluoride. Measurements using it give stable, reproducible results in fluoride or fluoride-chloride melts with a high fluoride content.

• Research Organization: Institute of Electrochemistry, Ural Scientific Center, Academy of Sciences of the USSR, Sverdlovsk
• OSTI ID: 5160668
• Journal Information: Sov. Electrochem. (Engl. Transl.); (United States), Journal Name: Sov. Electrochem. (Engl. Transl.); (United States) Vol. 21:3; ISSN SOECA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400400* -- Electrochemistry
ALKALI METAL COMPOUNDS
AMMONIUM COMPOUNDS
AMMONIUM FLUORIDES
CARBON
CARBON TETRAFLUORIDE
ELECTRIC POTENTIAL
ELECTROCHEMICAL CELLS
ELECTRODES
ELECTROLYTES
ELEMENTAL MINERALS
ELEMENTS
FLUIDS
FLUORIDES
FLUORINATED ALIPHATIC HYDROCARBONS
FLUORINE COMPOUNDS
GASES
GRAPHITE
HALIDES
HALOGEN COMPOUNDS
HALOGENATED ALIPHATIC HYDROCARBONS
HELIUM
LITHIUM COMPOUNDS
LITHIUM FLUORIDES
LITHIUM HALIDES
MATERIALS TESTING
MINERALS
MOLTEN SALTS
NONMETALS
ORGANIC COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
POTASSIUM COMPOUNDS
POTASSIUM FLUORIDES
POTENTIOMETRY
RARE GASES
SALTS
SODIUM COMPOUNDS
SODIUM FLUORIDES
TESTING
TITRATION