Anomalous dependence of leachability on surface area during sulphuric acid leaching of nickel- and copper-doped birnessites

作者: Rakesh Kumar

DOI: 10.1016/S0304-386X(99)00004-3

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摘要: Studies on nickel and copper-doped birnessite samples reveal, quite unexpectedly, that the leachability of doped element in sulphuric acid decreases with an increase specific surface area host phase. The observed anomalous dependence is explained terms transformation during leaching into more compact structure phase(s), such as nsutite (γ-MnO2), which are difficult to leach.

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