Preparation of Pure Fused Lithium Chloride-Potassium Chloride Eutectic Solvent

Abstract

Hydrolytic decomposition occurs during the fusion of a eutectic mixture of lithium chloride-potassium chloride containing traces of moisture if the fusion conditions are not controlled. The resultant contamination by hydroxyl ion greatly lowers the utility of this mixture as a fused salt solvent. The effectiveness of various procedures used for preparation of the fused salt solvent was followed by observation of the characteristic polarographic residual current using a platinum microelectrode. A preparative method is described which involves drying the mixture under moderate vacuum, fusion under anhydrous hydrogen chloride, and removal of the hydrogen chloride from the melt.

Electrochemical studies of yttrium and yttrium–zinc alloys in fused LiCl–KCl eutectic

“…(3) and ampuled under argon for future use. The salt used for the yttrium-zinc cells was prepared by adding anhydrous YCI, (A. D. MacKay Inc., N.Y.) before purification of the melt, as previously (2).…”

An Electrochemical Carbon Meter for Use in Sodium

“…17 Prior to use, the The color of the solid CaC -LiCl mixture is pink. Our experi-ence indicates that longer contact times between LiCl and CaC_.…”

Thallium and Tin Electrode Potentials in Fused LiCl–KCl Eutectic

“…Thrs resulted ~n tlie dissolution of all oxide and the formation of a bright thall~~im pool for the coulometric oxidizations. The tlialliuni pool electrode was then transferred into an isolation conipaltment as previously described (4). The thermoelectric potential between plat~nilm and graphite was found to be 0.004 V (graphite positive), and that between platinum and tungsten was found to be 0.005 V (t~~ngsten positive), both at 450 "C. These thermoelectric potentials were appropriately subtracted from tlie experiniental potentials.…”