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- Q3063311 subject Q7158333.
- Q3063311 subject Q7158350.
- Q3063311 subject Q7245951.
- Q3063311 subject Q8298272.
- Q3063311 subject Q8462593.
- Q3063311 subject Q9492498.
- Q3063311 subject Q9913070.
- Q3063311 abstract "FLiBe is a molten salt made from a mixture of lithium fluoride (LiF) and beryllium fluoride (BeF2). 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).The 2:1 mixture forms a stoichiometric compound, Li2BeF4, which has a melting point of 459 °C, a boiling point of 1430 °C, and a density of 1.94 g/cm3. Its volumetric heat capacity is 4540 kJ/m3K, which is similar to that of water, more than four times that of sodium, and more than 200 times that of helium at typical reactor conditions. Its appearance is white to transparent, with crystalline grains in a solid state, morphing into a completely clear liquid upon melting. However, soluble fluorides such as UF4 and NiF2, can dramatically change the color salt in both solid and liquid state. This made spectrophotometry a viable analysis tool, and it was employed extensively during the MSRE OperationsThe eutectic mixture is slightly greater than 50% BeF2 and has a melting point of 360 °C. This mixture was never used in practice due to the overwhelming increase in viscosity caused by the BeF2 addition in the eutectic mixture. BeF2, which behaves as a glass, is only fluid in salt mixtures containing enough molar percent of Lewis base. Lewis bases, such as the alkali fluorides, will donate fluoride ions to the beryllium, breaking the glassy bonds which increase viscosity. In FLiBe, beryllium fluoride is able to sequester two fluoride ions from two lithium fluorides in a liquid state, converting it into the tetrafluorberyllate ion BeF4−2.".
- Q3063311 thumbnail FLiBe.png?width=300.
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- Q3063311 wikiPageWikiLink Q7158333.
- Q3063311 wikiPageWikiLink Q7158350.
- Q3063311 wikiPageWikiLink Q7245951.
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- Q3063311 wikiPageWikiLink Q8298272.
- Q3063311 wikiPageWikiLink Q8462593.
- Q3063311 wikiPageWikiLink Q900661.
- Q3063311 wikiPageWikiLink Q9492498.
- Q3063311 wikiPageWikiLink Q9913070.
- Q3063311 comment "FLiBe is a molten salt made from a mixture of lithium fluoride (LiF) and beryllium fluoride (BeF2). 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).The 2:1 mixture forms a stoichiometric compound, Li2BeF4, which has a melting point of 459 °C, a boiling point of 1430 °C, and a density of 1.94 g/cm3.".
- Q3063311 label "FLiBe".
- Q3063311 depiction FLiBe.png.