Method for the manufacture of hydrotalcite

Details Method for the manufacture of hydrotalcite Method for the manufacture of hydrotalcite

1991-12-20

1993-10-05

Lewis, Michael

Chemistry of inorganic compounds

Carbon or compound thereof

Oxygen containing

4234202, 424686, 424688, C01B 3124, C01F 524, A01N 5906, A61K 3306

Patent

active

052502791

ABSTRACT:
An improved method for the production of synthetic hydrotalcites having high purity (99+%) and small particle size (<2 microns) is disclosed. This method used inexpensive and available reactants and is suitable for commercial scale production. A source of magnesium, such as magnesium hydroxide; a source of aluminum from a mixture of alumina trihydrate and an alkali metal aluminate; and a source of carbonate, such as sodium bicarbonate, are reacted under hydrothermal conditions at a temperature of between 160.degree.-200.degree. C. to produce synthetic hydrotalcite.

REFERENCES:
patent: 3099524 (1963-07-01), Grossmith
patent: 3650704 (1972-03-01), Kumura et al.
patent: 4883533 (1989-11-01), Kosin et al.
patent: 4904457 (1990-02-01), Misra
patent: 5078983 (1992-01-01), Herold

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