Highly reactive alumina and process for the preparation thereof

Details Highly reactive alumina and process for the preparation thereof Highly reactive alumina and process for the preparation thereof

1980-08-01

1981-09-29

Hearn, Brian E.

Chemistry of inorganic compounds

Oxygen or compound thereof

Metal containing

423628, 423630, 423631, C01F 730, C01F 702

Patent

active

042922950

ABSTRACT:
The invention relates to a new highly reactive alumina and the method of preparing it. The alumina is characterized by an amorphous structure and a specific surface of greater than 600 m.sup.2 /g. It is prepared by thermal decomposition of the double carbonate of aluminum and ammonium of the formula AlNH.sub.4 CO.sub.3 (OH).sub.2 at a temperature of between about 200.degree. and 500.degree. C.
Aluminum hydroxychlorides of the formula Al.sub.2 (OH).sub.x Cl.sub.6-x can be prepared from it.

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Newsome, Alumina Properties, Technical Paper No. 10, 2nd Rev., Aluminum Co. of America, Pittsburgh, Pa. (1960), pp. 68-71.

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