Method for preparation of ferrite powders at room temperature

Details Method for preparation of ferrite powders at room temperature Method for preparation of ferrite powders at room temperature

1996-04-29

1997-09-02

Bos, Steven

Chemistry of inorganic compounds

Oxygen or compound thereof

Metal containing

C01G 4900

Patent

active

056628790

ABSTRACT:
A method for precipitating ferrite at room temperature which involves dissolving metal salts in deaerated water, using a base solution to precipitate metal hydroxides, adding an oxidizing agent that has a standard reduction potential greater than 1.229 V versus standard hydrogen electrode. The oxidizing agent further preferably has a standard reduction potential less than 1.8 V versus standard hydrogen electrode. The oxidizing agent is preferably one of hydrogen peroxide, ammonium peroxydisulfate, ozone, nitrous acid, NO, and N.sub.2 O. The base is preferably ammonium hydroxide.

REFERENCES:
patent: 3822210 (1974-07-01), Iwase et al.
patent: 4680130 (1987-07-01), Hibst
patent: 4764429 (1988-08-01), Mair
patent: 5078984 (1992-01-01), Iwasaki et al.

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