Thermodynamic and electrochemical properties of cerium in LiCl-KCl eutectic salt have been measured studied at different concentrations (0.5 – 4 wt%) temperatures (698 K 798 K) via both cyclic voltammetry (CV) impedance spectroscopy (EIS) techniques as a part developing fundamental understanding methodology materials detection accountability for pyroprocessing technology. CV experiments were performed to determine the diffusion coefficient apparent standard potential CeCl3 on tungsten...

Electrochemical and thermodynamic properties of Ce3+/Ce on liquid cadmium cathode (LCC) were investigated in LiCl-KCl salt at various temperatures. Cyclic voltammograms only attributing to reaction obtained by background subtraction method diffusion coefficients Ce the LCC determined temperatures ranging from 723 K 798 K. Furthermore, Ce-Cd intermetallic compound formations measured via an open circuit chronopotentiometry technique temperature 698 823 The linear dependence Gibbs free energy...

Cl2/Cl− reference system was established with quartz cell where Cl2 gas trapped on a glassy carbon electrode surface allowing the thermodynamic equilibrium between and Cl− ions. Based reference, potential of Ag/AgCl evaluated at concentrations ranging from 0.00039 mole fraction AgCl to 1.0 temperatures 723 K 823 K. The measured values ranged −0.877 V −1.361 followed linear correlations against temperature concentration. However, pure showed slight upward in comparison other observed trends....

The electrochemical techniques including cyclic voltammetry (CV), open circuit potential (OCP), and impedance spectroscopy (EIS) were performed to understand fundamental behaviors of UCl3 in LiCl-KCl salt at concentrations ranging from 0.5 wt% 4 temperatures 723 K 798 K. In addition, the same measurements LiCl-KCl-UCl3-GdCl3 for evaluating effects GdCl3 co-existence on uranium properties. Diffusion coefficients (D) was calculated by measuring reduction peaks U3+/U CV experiments. values D...

A series of experiments were performed to produce a fuel source for molten salt reactor (MSR) through pyroprocessing technology. simulated LiCl–KCl–UCl3-NdCl3 system was prepared, and the U element fully recovered using liquid cadmium cathode (LCC) by applying constant current. As result, purified with an UCl3 concentration lower than 100 ppm. Subsequently, U/RE ingot prepared melting RE metals in Y2O3 crucible at 1473 K as surrogate RE-rich product from pyroprocessing. The produced sliced...

Abstract A mesh-type liquid cadmium cathode (LCC) structure has been devised to improve the performance of electro-winning process for recovery actinides in a molten chloride system. For verification its performance, electrodeposition experiments uranium from LiCl-KCl-UCl 3 salt were conducted at 773 K different current densities using LCC structure. Uranium was successfully collected over 5ߙwt.ߙ% without growing dendrites. The prevented uncontrolled growth dendrites into electrolyte phase...

Abstracts. A high-temperature molten salt natural convection loop was designed and manufactured for chloride-based salts. NaCl-MgCl2 prepared injected into the loop. Corrosion coupons composed of SS304, SS316L, high-Ni alloys were also as candidate structural materials chloride reactors. After a corrosion experiment conducted 500 h, drained from to drain tank; inductively coupled plasma optical emission spectroscopy used investigate metal dissolution salt. The corroded analyzed using...

This study proposes a method of separating uranium (U) and minor actinides from rare earth (RE) elements in the LiCl-KCl salt system. Several RE metals were used to reduce UCl3 MgCl2 eutectic systems. Five experiments performed on drawdown U plutonium (Pu) surrogate RECl3-enriched systems at 773 K. Via introduction into system, it was observed that concentration can be lowered below 100 ppm. In addition, reduced powdery form easily settled bottom successfully collected by distillation...

This study was conducted in an attempt to understand the effect of a stirred liquid cadmium cathode (LCC) on electrodeposition U and U/RE Cd. For this purpose, series electrowinning tests were performed using LCC equipped with Cd stirrer. Initially, three runs LiCl-KCl-UCl3 at 500°C under constant current. From results obtained from initial runs, it found that maximum deposited amount 7.4 wt% U/Cd. dendrite formation crucible not observed across each runs. Three additional...

Thermodynamic properties of Ce-Cd intermetallic compound were investigated in LiCl-KCl-CeCl3-CdCl2 molten salt system at various temperatures. Six compounds, CeCd, CeCd2, CeCd3, Ce13Cd58, CeCd6, and CeCd11 could be observed via cyclic voltammetry (CV) the relative Gibbs free energies for formations estimated by analysis anodic peaks CV experiments. Furthermore, an open circuit chronopotentiometry which is known as a suitable method measuring thermodynamic values compounds performed. The...

The feasibility of rare earth (RE) removal process via oxidation reactions with UCl3 was investigated using the HSC Chemistry code to reduce concentrations RE in transuranic (TRU) products. composition and thermodynamic data TRU elements contained reference spent fuel were examined. reactivity evaluated by calculating equilibrium considering UCl3. Both rate recovery for two cases, wherein products different used. When reacted UCl3, selective driven difference Gibbs free energy each element....