Thermodynamic investigation of the LiF–ThF4 system

Determination of the thermodynamic activities of LiF and ThF4in the LixTh1−xF4−3xliquid solution by Knudsen effusion mass spectrometry

“…A purification technique was applied using NH 4 HF 2 as fluorinating agent as described in detail elsewhere. 4 The purity of both compounds was then checked by identification of the melting point using the differential scanning calorimeter(DSC), as described in our previous works. 4,5 The samples were encapsulated to prevent possible reactions with water/oxygen and protect the instrument from corrosive fluoride vapours.…”

Electrochemistry of thorium fluoride in LiCl-KCl eutectic melts and methodology for speciation studies with fluorides ions

“…Finally the molten salt retained for the Molten Salt Fast Reactor is the binary system LiF-ThF 4 in which is dissolved the fissile material (UF 4 or PuF 3 ). A thermodynamical study of such a salt was described recently by Capelli [5].…”

Thermodynamic assessment of the LiF–ThF4–PuF3–UF4 system

“…In case of ThF 4 , there is an additional tendency to oxidize to form oxyfluorides impurities that can dissolve in the salt. These impurities have been converted into fluorides using a fluorinating agent, NH 4 HF 2 , using the procedure described in our previous work [18]. Afterwards, the purity of the salt was checked for its melting point using DSC.…”