Short-range structure of molten CeCl3 and NdCl3 determined by XAFS

Competitive Coordination of Chloride and Fluoride Anions Towards Trivalent Lanthanide Cations (La3+ and Nd3+) in Molten Salts

“…The variation in intensities of the peaks representing Nd−Cl (1.81 Å) and Nd−F (2.45 Å) on the FT also showed this substitution. The fitting results of the main FT peaks (Figure 4b and Table 2) show Nd−Cl and Nd−F distances of 2.80‐2.82 Å and 2.37‐2.40 Å for molten LiCl‐KCl‐LiF‐NdCl 3 respectively, which are consistent with that in molten NdCl 3 and NdF 3 [9,17] . Between F/Nd=1.0 and F/Nd=2.0, N of Nd−F increased from 2.4±0.5 to 3.1±0.4, while simultaneously N of Nd−Cl remained around 4.…”

Refractive Indices and Molar Refractivities of Molten Rare-Earth Trichlorides and Their Mixtures with Alkali Chlorides

“…Moreover, the correlations are observed between the rare-earth ions polarizability and short-range structure parameters of molten LnCl 3 , such as Ln 3+ –Cl – distances ( a ) and coordination numbers of chloride ions around the lanthanide ion ( n ) determined with the various X-ray and neutron diffraction methods. − Table presents the relation between the electron polarizability of Ln 3+ -ions and structural parameters of molten LnCl 3 . From these data it is possible to make tentative estimates of both optical and structural characteristics of molten rare-earth trichlorides, which still require a further thorough examination.…”

Rare Earth Electrochemical Property Measurements and Phase Diagram Development in a Complex Molten Salt Mixture for Molten Salt Recycle

“…This indicates that if CsCl does break the network structures of GdCl3, it is probably more effective at high Cs/Gd ratios. CeCl3 is also known to be present in the octahedral coordination in molten salts [93]. However, there is no published literature for the CeCl3-alkali chloride interactions.…”