Electro-deoxidation of V_2O_3 in molten CaCl_2-NaCl-CaO

作     者：Shu-lan Wang Shi-chao Li Long-fei Wan Chuan-hua Wang 

作者机构：School of ScienceNortheastern UniversityShenyang 110004China 

出 版 物：《International Journal of Minerals,Metallurgy and Materials》 (矿物冶金与材料学报（英文版）)

年 卷 期：2012年第19卷第3期

页      面：212-216页

核心收录：

学科分类：081702[工学-化学工艺] 0709[理学-地质学] 0819[工学-矿业工程] 081902[工学-矿物加工工程] 08[工学] 0806[工学-冶金工程] 0817[工学-化学工程与技术] 0708[理学-地球物理学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0802[工学-机械工程] 0702[理学-物理学] 0801[工学-力学（可授工学、理学学位）] 

基　　金：financially supported by the National Natural Science Foundation of China (Nos.51154002 and 50834001) Panzhihua New Steel and Vanadium Co.Ltd 

主　　题：vanadous oxide electro-deoxidation vanadium molten salt electrochemical cells 

摘      要：The electro-deoxidation of V2O3 precursors was studied. Experiments were carried out with a two-terminal electrochemical cell, which was comprised of a molten electrolyte of CaCl2 and NaC1 with additions of CaO, a cathode of compact V2O3, and a graphite anode under the potential of 3.0 V at 1173 K. The phase constitution and composition as well as the morphology of the samples were studied by X-ray diffraction （XRD） and scanning electron microscopy （SEM）. 3 g of V2O3 could be converted to vanadium metal powder within the processing time of 8 h. The kinetic pathway was investigated by analyzing the product phase in samples prepared at different reduction stages. CaO added in the reduction path of V2O3 formed the intermediate product CaV2O4.