OXYGEN-CONTAINING HYDRATED ALUMINUM COMPOUND AND A METHOD OF PRODUCTION PROCESS THEREOF Russian patent published in 2004 - IPC

Abstract RU 2237019 C1

FIELD: inorganic compounds technology.

SUBSTANCE: invention, which can be used in production of various modifications of aluminum oxides and hydroxides, aluminum salts, and so on, provides, in particular, hydrated aluminum compound of general formula Al₂O₃*nH₂O containing 4, 5, and 6-coordination aluminum cations and characterized by surface area 50 to 450 m2/g and amorphous or poorly crystallized, or partially crystalline structure. When n = 0.01 to 2.99, average particle size of the powder varies from 20 to 150 mcm. Thermogram of this compound indicates exothermic effect in the temperature range 780-850^оС characteristic of regular crystalline structure. Oxygen-containing hydrated aluminum compound is obtained by rapid thermal-shock treatment of aluminum hydroxide at elevated temperature followed by forced cooling, said thermal-shock treatment being conducted in heat-insulated chamber under centrifugal force effect on aluminum hydroxide spread in thin layer on rotating surface heated to 330-1500^о for a period of time 0.01 to 10 sec while simultaneously trapping releasing water vapors.

EFFECT: enabled preparation of chemically active aluminum compound not polluted with combustion products and having stable structure.

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RU 2 237 019 C1

Authors

Tanashev Ju.Ju.

Isupova L.A.

Krugljakov V.Ju.

Kharina I.V.

Parmon V.N.

Dates

2004-09-27—Published

2003-05-15—Filed