Test of Actinide-Lanthanide Separation in an Aluminum-Based Pyrochemical System

Electrochemical behaviour of praseodymium (III) in molten chlorides

“…(11). a Pr in the (PrAl 11/3 + Al) phase was found to be of the order of 10 À14 -10 À11 as shown in Table 3.…”

“…Each of these categories of elements is well known to yield easily and with high rates alloys or compounds with more noble elements; among these we can consider, besides the reported Cd and Bi [8][9][10], also Al [11][12][13]. The deposition in an alloyed form of these elements proceeds at more sensible positive potentials, so that their separation from other reactive elements could become easier.…”

On the formation of U–Al alloys in the molten LiCl–KCl eutectic

“…As detailed in Table 3 This spontaneous reaction has been mentioned earlier by Chiotti [23], who consequently used a low concentration of UCl 3 (1.3 mass.%) for the purpose of emf measurements in cells of the type U (s) /KCl-LiCl-UCl 3 /U-Al. Furthermore, it has been shown that the reaction is enhanced at higher temperatures (750-950°C), above the melting point of Al, in other chloride melts (NaCl-KCl for instance [28]), as well as in LiF-CaF 2 fluoride mixtures where U (as well as Pu and the MA) is fully extracted in a liquid Al phase at 830°C [7,29].…”

Co-reduction of aluminium and lanthanide ions in molten fluorides: Application to cerium and samarium extraction from nuclear wastes

“…Several separation techniques are examined as precipitation with oxide ions [1], electrorefining [2][3][4] or reductive extraction [5]. Reductive extraction is considered as the more efficient process for the French option (fluoride/aluminium) and it is also considered within the Japanese process in molten chloride with bismuth.…”