FERROUS ACETATE PREPARATION METHOD Russian patent published in 2006 - IPC C07C53/10 C07F15/02 

Abstract RU 2269509 C2

FIELD: inorganic syntheses.

SUBSTANCE: method consists in that iron powder is oxidized in acetic acid/acetic anhydride (4%) medium with air oxygen bubbled through the medium, while maintaining iron-to-acetic acid molar ratio 5:1 and temperature 17-25°C. Reaction mixture is thoroughly stirred with blade stirrer at speed of rotation 720-1440 rpm until reaction mixture accumulates 0.75-0.96 mol/kg ferric salt. Thereafter, air is replaced by nitrogen and 4% acetic anhydride based on initially charged acetic acid is added, temperature is raised to 35-40°C, and iron is oxidized with ferric salt until full consumption of the latter. Resulting snow-white ferrous acetate suspension is separated from unreacted iron, filtered off, and dried. All above operations are carried out under a nitrogen atmosphere. Filtrate, which is saturated ferric acetate solution in acetic acid/acetic anhydride mixture, is recycled to reactor to be reprocessed or it is used according another destination.

EFFECT: simplified technology and improved economical characteristics of process due to use of inexpensive oxidant.

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RU 2 269 509 C2

Authors

Ivanov Anatolij Mikhajlovich

Altukhov Sergej Pavlovich

Lotorev Dmitrij Sergeevich

Dates

2006-02-10Published

2004-03-22Filed