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Typically lithium fluoride is mixed with beryllium fluoride to form a base solvent , into which fluorides of uranium and thorium are introduced. Lithium fluoride is exceptionally chemically stable and LiF/ BeF 2 mixtures ( FLiBe ) have low melting points (360 to 459 °C or 680 to 858 °F) and the best neutronic properties of fluoride salt ...
Lithium hypofluorite is an inorganic compound with the chemical formula of Li O F. It is a compound of lithium , fluorine , and oxygen . [ 1 ] [ 2 ] [ 3 ] This is a lithium salt of hypofluorous acid , [ 4 ] and contains lithium cations Li + and hypofluorite anions − OF .
FLiBe is a molten salt made from a mixture of lithium fluoride (LiF) and beryllium fluoride (BeF 2). It is both a nuclear reactor coolant and solvent for fertile or fissile material. It served both purposes in the Molten-Salt Reactor Experiment (MSRE) at the Oak Ridge National Laboratory .
Lithium hexafluorosilicate is a white, odorless solid that is soluble in water and methanol. When heated above 250 °C, it decomposes into lithium fluoride and silicon(IV) fluoride . It has a trigonal crystal structure with the space group P 321 (space group no. 150) and three formula units per unit cell, isotypic to sodium hexafluorosilicate .
The third most common use of lithium is in greases. Lithium hydroxide is a strong base, and when heated with a fat, it produces a soap, such as lithium stearate from stearic acid. Lithium soap has the ability to thicken oils, and it is used to manufacture all-purpose, high-temperature lubricating greases. [21] [162] [163]
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Lithium holmium fluoride is a ternary salt with chemical formula LiHoF 4. At temperatures below 1.53 K, it is ferromagnetic described by the Ising model , but the interaction coefficients arise through superexchange .
LFTR designs that use a lithium salt, choose the lithium-7 isotope. In the MSRE, lithium-6 was successfully removed from the fuel salt via isotopic enrichment. Since lithium-7 is at least 16% heavier than lithium-6, and is the most common isotope, lithium-6 is comparatively easy and inexpensive to extract.