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通过低电压电解实验、不同阴极电解对比实验和反电动势测定实验,并结合循环伏安法研究了熔盐电脱氧法制取金属Ti过程中阴极的还原过程。结果表明,还原过程是分步进行的。TiO2先被还原为Ti3O5或Ti2O3,再进一步被还原为Ti3O、Ti2O、TiO或金属Ti。另外,阴极进行的主要电极反应是TiO2的直接电还原反应,同时在阴极也存在一定的钙热还原反应,只是反应强度较弱。另外,分别以钼丝和二氧化钛为研究电极,进行了循环伏安曲线测定。
The reduction process of cathode during the preparation of metal Ti by molten salt deoxidation was studied by low voltage electrolysis experiment, different cathodic electrolysis contrast test and back electromotive force measurement experiment combined with cyclic voltammetry. The results show that the reduction process is carried out step by step. TiO2 is first reduced to Ti3O5 or Ti2O3, and further reduced to Ti3O, Ti2O, TiO or metal Ti. In addition, the cathode is the main electrode reaction is the direct electro-reduction reaction of TiO2, while there is a certain calcium reduction in the cathode reaction, but the reaction intensity is weak. In addition, the molybdenum wire and titanium dioxide as the research electrode, the cyclic voltammetry curve was measured.