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Meeting 2017 TMS Annual Meeting & Exhibition
Symposium High Temperature Electrochemistry III
Presentation Title Electrochemical Synthesis of TaC in Molten Salt
Author(s) Xin Li, Xingli Zou, Shangshu Li, Kai Zheng, Yinshuai Wang, Qian Xu, Xionggang Lu
On-Site Speaker (Planned) Xin Li
Abstract Scope TaC has been successfully synthesized from Ta2O5/C through electrodeoxidation process in molten CaCl2 at 1000 C and 4.0 V. The electrolysis process utilized a pressed porous Ta2O5/C pellet mixture as the cathode, and a solid-oxygen-ion-conducting membrane (SOM) tube filled with carbon-saturated liquid tin/copper was served as the anode to control the electrodeoxidation process. The obtained cathodic product was analyzed by using X-ray diffraction (XRD) and scanning election microscopy (SEM). The result shows that the possible synthesis pathway can be summarized as the following: (1) CaαTa2βO(α+5β) compounds were firstly formed due to the compounding process (αCaO + βTa2O5 = CaαTa2βO(α+5β)), (2) the generated intermediate compounds would be reduced to Ta through electroreduction process (CaαTa2βO(α+5β) + 10βe- = 2βTa + 5βO2-+ αCaO), (3) the generated Ta reacted with C to form TaC carbide via carbonization process (Ta + C = TaC). Keywords: TaC; electrodeoxidation; molten CaCl2; SOM
Proceedings Inclusion? Planned: Supplemental Proceedings volume

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Effects of Oxide Precursor Preparation Parameters on the Electrochemical Reduction of Tantalum Pentoxide in Calcium Chloride Melt
Electrochemical and Thermodynamic Properties of Gadolinium Chloride in LiCl-KCl Eutectic Salt
Electrochemical Behavior of Sn/SnCl2 Cathode in Na | NaCl-AlCl3-SnCl2 | Sn Cell
Electrochemical Deposition of Barium into Liquid Bismuth from BaCl2-LiCl-CaCl2-NaCl Electrolyte
Electrochemical Synthesis of TaC in Molten Salt
Electrochemical Techniques for Nuclear Safeguards in Molten Salt
Electrochemistry in Molten 2LiF-BeF2 Salt for the Fluoride Salt-Cooled High Temperature Reactor Applications
Impurity Removal from Titanium Oxycarbide
Initial Operation of Kg-Scale Electrolytic Reduction and Salt Distillation Equipment for the Pyroprocessing of Uranium Oxide in a Hot Cell
Molten Flux Design for Solid Oxide Membrane Based Electrolysis of Si from Silica
Optimized Voltammetry Methods for Measuring Concentration of Multiple Rare Earths and Actinides in Molten LiCl-KCl
Thermal Imaging Furnace Technique for Ultra-high Temperature Electrochemical Measurements
Thermochemical Properties of Barium-Bismuth Alloys Determined by Emf Measurements
Thorium and Uranium Electrodeposition from Molten LiCl-KCl onto Alpha Spectroscopy Semiconductor Detector Surface
Zirconium Management in the Mk-IV Electrorefiner

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