Study on copper ferrite dissolution in sulphuric acid

Rudi Subagja, Akio Fuwa

    研究成果: Article査読

    抄録

    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.

    本文言語English
    ページ(範囲)49-54
    ページ数6
    ジャーナルShigen to sozai
    105
    1
    出版ステータスPublished - 1989 1

    ASJC Scopus subject areas

    • 工学(全般)

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