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http://dx.doi.org/10.7733/jkrws.2012.10.2.097

An Electrochemical Reduction of TiO2 Pellet in Molten Calcium Chloride  

Ji, Hyun-Sub (Chungbuk National University)
Ryu, Hyo-Yeol (Chungbuk National University)
Jeong, Ha-Myung (Chungbuk National University)
Jeong, Kwang-Ho (Chungbuk National University)
Jeong, Sang-Mun (Chungbuk National University)
Publication Information
Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT) / v.10, no.2, 2012 , pp. 97-104 More about this Journal
Abstract
A porous $TiO_2$ pellet was electrochemically converted to the metallic titanium by using a $CaCl_2$ molten salt system at $850^{\circ}C$. Ni-$TiO_2$ and graphite electrodes were used as cathode and anode, respectively. The electrochemical behaviour of $TiO_2$ pellet was determined by a constant voltage control electrolysis. Various reaction intermediates such as $CaTiO_3$, $Ti_2O$ and $Ti_6O$ were observed by XRD analysis during electrolysis of the pellet. Once $TiO_2$ pellet was converted to a porous metallic structure, the porous structure disappeared by sintering and shrinking with increasing the reaction time at high temperature.
Keywords
titanium sponge; electrochemical reduction; titanium dioxide; molten salt; calcium chloride;
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Times Cited By KSCI : 2  (Citation Analysis)
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