Reduction of metal oxides in an electrolytic cell

Details Reduction of metal oxides in an electrolytic cell Reduction of metal oxides in an electrolytic cell

C - Chemistry, Metallurgy

25

C

C25C 3/28 (2006.01) C22B 5/02 (2006.01) C22B 34/12 (2006.01) C25C 3/00 (2006.01)

Patent

CA 2479048

A method of reducing a metal oxide, such as titania in a solid state in an electrolytic cell is disclosed. The electrolytic cell includes an anode, a cathode, and a molten electrolyte. The electrolyte includes cations of a metal that is capable of chemically reducing the metal oxide. The metal oxide in a solid state is immersed in the electrolyte. The method includes a step of operating the cell at a potential that is above a potential at which cations of the metal that is capable of chemically reducing the metal oxide deposit as the metal on the cathode, whereby the metal chemically reduces the metal oxide.

L'invention concerne un procédé permettant de réduire un oxyde métallique, tel que du titane à l'état solide, dans une cellule électrolytique. Ladite cellule électrolytique comprend une anode, une cathode et un électrolyte fondu. L'électrolyte comprend des cations métalliques capables de réduire chimiquement l'oxyde métallique. Ledit oxyde métallique à l'état solide est immergé dans l'électrolyte. Ledit procédé consiste à faire fonctionner la cellule à un potentiel au-dessus du potentiel auquel les cations métalliques capables de réduire chimiquement le dépôt d'oxyde peuvent se déposer sous forme de métal sur la cathode. De ce fait, le métal réduit chimiquement l'oxyde métallique.

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