Electrochemical reduction of calcium chromate

Journal Article · Thu Sep 01 04:00:00 EDT 1983 · J. Electrochem. Soc.; (United States)

DOI:https://doi.org/10.1149/1.2120115· OSTI ID:5473953

Delnick, F M; McCarthy, D K

The electrochemical reduction of CrO/sub 4//sup 2 -/ proceeds through a Cr(V) intermediate, CrO/sub 4//sup -3/. The reaction of this intermediate with the available cations and the concentrations of these cations determine the overall reaction mechanism and the ultimate reduction product. In LiCl-KCl eutectic, CaCrO/sub 4/ (> about 0.1m) is reduced to the stable intermediate Ca/sub 5/(CrO/sub 4/)/sub 3/Cl. In CaCl/sub 2//sup -/ KCl-NaCl ternary eutectic CaCrO/sub 4/ (> about 0.1m) is reduced to the stable intermediate Ca/sub 2/CrO/sub 4/Cl. In the presence of Li/sup +/, each of these Cr(V) compounds is further reduced to LiCrO/sub 2/. No subsequent reduction of Ca/sub 5/(CrO/sub 4/)/sub 3/Cl or Ca/sub 2/CrO/sub 4/Cl occurs in CaCl/sub 2/-KCl-NaCl ternary eutectic.

• Research Organization: Sandia National Laboratories, Albuquerque, NM
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 5473953
• Journal Information: J. Electrochem. Soc.; (United States), Journal Name: J. Electrochem. Soc.; (United States) Vol. 130:9; ISSN JESOA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400400* -- Electrochemistry
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
CALCIUM COMPOUNDS
CATIONS
CHALCOGENIDES
CHARGED PARTICLES
CHEMICAL REACTIONS
CHEMISTRY
CHLORIDES
CHLORINE COMPOUNDS
CHROMATES
CHROMIUM COMPOUNDS
CHROMIUM OXIDES
ELECTROCHEMISTRY
EUTECTICS
HALIDES
HALOGEN COMPOUNDS
IONS
LITHIUM CHLORIDES
LITHIUM COMPOUNDS
LITHIUM HALIDES
OXIDES
OXYGEN COMPOUNDS
POTASSIUM CHLORIDES
POTASSIUM COMPOUNDS
REACTION INTERMEDIATES
REDUCTION
TRANSITION ELEMENT COMPOUNDS