Low temperature refining and formation of refractory metals

Details Low temperature refining and formation of refractory metals Low temperature refining and formation of refractory metals

2005-10-25

2005-10-25

Phasge, Arun S. (Department: 1753)

Electrolysis: processes, compositions used therein, and methods

Electrolytic synthesis

Utilizing fused bath

C205S368000, C205S371000, C205S397000, C205S398000, C205S402000, C205S406000, C205S410000, C205S560000, C205S564000, C205S572000

Reexamination Certificate

active

06958115

ABSTRACT:
This invention discloses and claims the low temperature reduction and purification of refractory metals, metal compounds, and semi-metals. The reduction is accomplished using non-aqueous ionic solvents in an electrochemical cell with the metal entity to be reduced. Using this invention, TiO2is reduced directly to Ti metal at room temperature.

REFERENCES:
patent: 6368486 (2002-04-01), Thompson et al.
patent: 6527938 (2003-03-01), Bales et al.
Fray et al, Removal of Oxygen from Metal Oxides and Solid Solutions by Electrons in a Fused Salt, PCT Application GB99/01781.
Mamantov et al, “Chemistry of Nonaqueous Solutions Current Progress”, VCH Publishers, Inc., 1994, pp. 227-275, The United States of America, no month.
Chen et al, “Direct Electrochemical Reduction of Titanium in Molten Calcium Chloride”, Macmillan Magazines Ltd, Sep. 21, 2002, pp. 361-364, vol. 407, United Kingdom.
Ngo et al, “Thermal Properties of Imidazolium Ionic Liquids”, Elsevier Science B.V., 2000, pp. 97-102, The United States of America, no month.
Chauvin et al, “Nonaqueous Ionic Liquids as Reaction Solvents”, American Chemical Society, 1995, pp. 26-30, The United States of America, no month.

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