FIELD: chemistry.
SUBSTANCE: invention relates to chemistry. Aluminium hydroxide and magnesium hydroxide are mixed in weight ratio 2.69:1 and mechanically activated in high-stress planetary-centrifugal mills for 5-15 minutes with ratio of the mass of the suspension to mass of the ball load equal to 1:10-1:30 and acceleration during activation of 20-40 g. Activation products are treated with water at temperature 20-95°C and time 0.25-2 hours, filtered, dried and thermally treated at temperature not lower than 800°C for 2-4 hours.
EFFECT: invention enables to obtain powdered magnesium aluminate with specific surface area from 80 to 260 m2/g.
3 cl, 1 tbl
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Authors
Dates
2012-07-27—Published
2011-04-27—Filed