| 摘要 |
Processes are provided for preparing basic aluminum compounds of formula (I): Al2(OH)6-aXa, wherein X is Cl-, 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): AlnXm, or an acid of formula (III): HnX, wherein X is Cl-, 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. |
