A direct synthesis route for high purity anhydrous binary and ternary salt mixtures has been developed. This atom efficient, solvent free process is easily scalable with potential to produce salt eutectics with purity standards required to meet the needs of industrial heat transfer and nuclear applications. The methodology involves mechanochemical mixing of alkali and alkaline earth chloride salts followed by subsequent drying under dry air laminar flow. Each salt carnallite was then analyzed for waters of hydration, purity, and oxide content through subsequent thermogravimetric analysis, X-ray diffraction, and strong acid titration. This process presents a more effective alternative route to the previous method of decomposing the ammonium chloride carnallite to achieve low oxide high purity chloride salts.

Mechanochemical synthesis of high purity anhydrous binary and ternary salt mixtures

2019 Fall National Meeting

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