Electrical conductivity of molten mixtures of antimony(III) chloride-aluminum chloride and antimony(III) chloride-aluminum chloride-sodium chloride

Journal Article · Fri Jan 01 00:00:00 EST 1982 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j100220a028· OSTI ID:6312895

Petrovic, C ^[1]; Mamantov, G; Sorlie, M; Lietzke, M H; Smith, G P

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1. Univ. of Tennessee, Knoxville

The electrical conductivity of SbCl/sub 3/-AlCl/sub 3/ mixtures was measured for melts containing 2.5-60.0 mol % AlCl/sub 3/ at tempertures ranging from 81-224/sup 0/C for 2.5 mol % AlCl/sub 3/ to 189-212/sup 0/C for 60.0 mol % AlCl/sub 3/. These data were accurately represented by the empirical equation ln kappa = A/sub 1/ - A/sub 2/T/sup -1/ - A/sub 3/T/sup 1/10/, where kappa is the specific conductivity and A/sub 1/, A/sub 2/, and A/sub 3/ are adjustable parameters. For melts containing 2.5 to 30.0 mol % AlCl/sub 3/, deviations from Arrhenius behavior were large, and in the range 2.5 to 10.0 mol % AlCl/sub 3/ the conductivity passed through a maximum T/sub m/ as a function of temperature. At 2.5 mol % AlCl/sub 3/ the maximum occurred at 180/sup 0/C with a specific conductivity of 0.00107 S cm/sup -1/. Isothermal conductivity-composition curves passed through maxima that shifted from 0.042 S cm/sup -1/ and 25 mol % AlCl/sub 3/ at 100/sup 0/C to 0.092 S cm/sup -1/ and 35 mol % AlCl/sub 3/ at 200/sup 0/C. Conductivity as a function of temperature up to about 225/sup 0/C was measured for SbCl/sub 3/-AlCl/sub 3/-NaCl melts containing 5.0 to 5.0, 10.0 to 5.0, and 10.0 to 10.0 mol % AlCl/sub 3/ and NaCl, respectively. It was found that at low temperatures the addition of NaCl to a SbCl/sub 3/-rich SbCl/sub 3/-AlCl/sub 3/ mixture results in a substantial conductivity decrease. Although the data for SbCl/sub 3/-AlCl/sub 3/ melts can be interpreted in terms of a Stokesian diffusional transport mechanism, the SbCl/sub 3/-AlCl/sub 3/-NaCl data favor the occurrence of a non-Stokesian chloride-exchange transport process in addition to Stokesian conductivity. 5 figures.

• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 6312895
• Journal Information: J. Phys. Chem.; (United States), Vol. 86
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ALUMINIUM CHLORIDES
ELECTRIC CONDUCTIVITY
ANTIMONY CHLORIDES
SODIUM CHLORIDES
EXPERIMENTAL DATA
MIXTURES
MOLTEN SALTS
TEMPERATURE DEPENDENCE
ALKALI METAL COMPOUNDS
ALUMINIUM COMPOUNDS
ANTIMONY COMPOUNDS
CHLORIDES
CHLORINE COMPOUNDS
DATA
DISPERSIONS
ELECTRICAL PROPERTIES
HALIDES
HALOGEN COMPOUNDS
INFORMATION
NUMERICAL DATA
PHYSICAL PROPERTIES
SALTS
SODIUM COMPOUNDS
400201* - Chemical & Physicochemical Properties