In this research, dissolution of synthesized copper ferrite in aqueous sulphuric acid was investigated where temperatures were varied from 323 K to 343 K and sulphuric acid concentration from 1 M to 3 M. Effects of Fe3+, Fe2+ and SO4 2- were also studied. The experimental results have shown that in the initial period of dissolution, the rate of copper was greater than the of iron, leaving the Fe2O3 layer outside. After a long dissolution period, the stoichiometric dissolution of copper and iron was attained as CuFe2O4 + 8 H+ = Cu+ +2 Fe3+ + 4 H2O. Increase is temperature and acid concentration lead to an increase in the dissolution rate. However, increases in Fe3+, Fe2+ or SO4 2- decreased the dissolution rate due to the decrease in hydrogen ion activity.
|Number of pages||6|
|Journal||Shigen to sozai|
|Publication status||Published - 1989 Jan|
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