Methods for preparing basic aluminum compounds with ultrasound

Details Methods for preparing basic aluminum compounds with ultrasound Methods for preparing basic aluminum compounds with ultrasound

C - Chemistry, Metallurgy

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F

C01F 7/02 (2006.01) B01J 19/10 (2006.01) C01F 7/48 (2006.01) C01F 7/56 (2006.01) C01F 7/66 (2006.01) C01F 7/68 (2006.01)

Patent

CA 2140351

Processes are provided for preparing basic aluminum compounds of formula (I): Al2(0H)6-aXa, wherein X is C1-, Br-, F-, I-, SO4 = or NO3- and a is about 0.9 to 4, the compound being characterized by size exclusion chromatography as having a Band I percent aluminum value of about 5 % or less and a Band II percent aluminum value of about 50 % to 90 %, which comprise (a) suspending an aluminum metal in an aqueous medium to form a slurry, (b) applying ultrasonic energy to the slurry, (c) reacting the sonicated slurry with an aluminum compound of formula (II): A1nXm, or an acid of formula (III): HnX, wherein X is C1-, Br-, F-, I-, SO4 = or NO3-, n is 1 or 2 and m is 3, at a temperature of about 45°C to 100°C to form a reaction product.

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