Korean Journal of Metals and Materials (대한금속재료학회지)

The Korean Institute of Metals and Materials (대한금속재료학회)
권호 표지

A Study on the Examination of Reaction Mechanism for Molten Salt Electrolysis of Titanium Dioxide

이산화타이타늄의 용융염 전기분해 반응기구 규명에 관한 연구

  • Jo, Sung-Koo (Non-ferrous Refining Project, Research Institute of Industrial Science and Technology (RIST)) ;
  • Jung, Jae-Young (Non-ferrous Refining Project, Research Institute of Industrial Science and Technology (RIST))
  • 조성구 (포항산업과학연구원 비철제련연구단) ;
  • 정재영 (포항산업과학연구원 비철제련연구단)
  • Received : 2008.08.22
  • Published : 2009.03.25
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Abstract

The molten salt electrolysis is applied to reduce titanium dioxide to titanium metal using calcium chloride as an electrolyte and the reaction mechanism of the reduction process is examined by analyzing the reaction products. The process conditions to obtain titanium metal for $900^{\circ}C$ correspond to 2.9~3.2 V and 24 hours. The reaction products for 2.9 V at $900^{\circ}C$ include irregular-shaped titanium oxides such as $Ti_4O_7$, $Ti_3O_5$ and $Ti_2O_3$ and polyhedral $CaTiO_3$. Using these microstructure analysis, the sequential reaction mechanism for the electrochemical reduction of titanium dioxide to titanium is proposed.

Keywords

References

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