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The effect of zinc sulÞ de on phase transformations of ferrihydrite.
Авторы: LOAN M., PARKINSON G., RICHMOND W.
2005 г.
Amer.Miner.
The addition of ZnS particles to suspensions of ferrihydrite promotes the formation of the more crystalline phases goethite [α-FeO(OH)] and hematite (α-Fe2O3) at pH ∼ 2–3 and 85 °C. This previously undocumented effect appears to arise from surface-mediated reduction of Fe3+ species to Fe2+ with associated dissolution of ZnS.
Файл: 350.pdf
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