Abstract
A new method for the synthesis of powder using a corrosion reaction of metal in alcohol is proposed. Manganese has been dissolved in anhydrous methanol solvent containing ferric chloride as a catalyst by refluxing at 348 K for a period of 7.2 ks. A greenish-black precipitate has been obtained by adding the hydrated solution into NaOH solution at pH 12. This precipitated powder was identified as a manganese ferrite of MnFe2O4 by XRD analysis and showed characteristics of a soft ferrite by measuring a magnetic hysteresis loop. SEM observation and measurement of particle size distribution revealed that the powders were coagulation of submicron meter size particles. The preparation of MnFe2O4 was explained as mixed corrosion products of manganese with ferric hydroxide derived from addition of FeCl3.
