Fibrous magnesium oxide and process for production thereof

Details Fibrous magnesium oxide and process for production thereof Fibrous magnesium oxide and process for production thereof

C - Chemistry, Metallurgy

01

F

23/280

C01F 5/08 (2006.01) C01F 5/06 (2006.01)

Patent

CA 1203669

ABSTRACT A magnesium oxide having a cubic system needle-like crystal structure and a length-to-diameter ratio, determined by an electron microscope at a magni- fication of 10,000, of at least about 5; and a process for producing a magnesium oxide having a cubic system needle-like crystal structure, which comprises calcining a basic magnesium compound having a needle-like crystal structure expressed by the following formula Image wherein An- represents a monovalent (n=1) to tetravalent (n=4) anion, x is 0.2?x?0.5, and m is O<m?2, or a magnesium hydroxide having a needle-like crystal structure, at a temperature of not less than about 400°C to convert it to the magnesium oxide.

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