EIGHTH ANNUAL REPORT ON DISTRIBUTION STUDIES BETWEEN MELTS AND SOLID PHASES USING RADIOACTIVE TRACERS

Technical Report · Thu Jun 30 04:00:00 EDT 1960

OSTI ID:4173532

Orr, W C; Ward, R; Katz, L; Burgess, T E; Plumley, A E

The exchange of sodium ions between solid aluminosilicates and molten salts was studied with the aid of a sodium-22 tracer. For sodalite (Ns/sub 4/Al/ sub 6/Si/sub 6/O/sub 24/Cl/sub 2/) a nd noselite (Na/sub 4/Al/sub 6/8Si/sub 6/O/ sub 24/SO/sub 4/), which have the same t hreedimensional network structure, the rate of exchange is shown to depend on diffusion in the solid. The sodalite diffusion coefficient, D, is estimated to range from 3.3 x 10/sup -11/ cm/sup 2/ min/sup - 1/ at 320 deg C to 12 x 10/sup -11/ cm/sup 2/ min/ sup -1/ at 400 deg C. Activation energy for the diffusion of sodium ions in solid sodalite is 12.5 Kcal mole/sup -1/ and in noselite is 9.7 Kcal mole/sup -1/. Artificially prepared sodalite exchanges more rapidly than the natural mineral, presumably because it consists of small crystallites that present a larger surface to the liquid phase. Preliminary experiments suggest that the exchange of sodium between solid tungsten bronzes and either molten salts or amalgams can be studied by similar techniques. (auth)

• Research Organization: Connecticut. Univ., Storrs
• NSA Number: NSA-14-021433
• OSTI ID: 4173532
• Report Number(s): TID-6243
• Country of Publication: United States
• Language: English

Related Subjects

ALUMINUM COMPOUNDS
ALUMINUM SILICATES
CHEMISTRY
COPPER ALLOYS
DIFFUSION
DISTRIBUTION
ION EXCHANGE
MELTING
MERCURY ALLOYS
MINERALS
NOSELITE
RADIOISOTOPES
SILICATES
SODALITE
SODIUM
SODIUM CHLORIDES
SODIUM SILICATES
SODIUM SULFATES
SOLIDS
TIN ALLOYS
TRACER TECHNIQUES
TUNGSTEN
USES