Phase transformations and proton promoted dissolution of hydrous manganite (gamma-MnOOH)
  • 【摘要】

    The objective of this study was to describe the proton promoted disproportion of synthetic manganite (gamma-MnOOH) and to characterise the resulting phase transformations. The solution and remaining s... 展开>>The objective of this study was to describe the proton promoted disproportion of synthetic manganite (gamma-MnOOH) and to characterise the resulting phase transformations. The solution and remaining solid phase after disproportionation was analysed by techniques including atomic absorbance spectroscopy, X-ray diffraction (XRD), atomic force microscopy (AFM) and scanning electron microscopy (SEM). In suspensions with pH between 5 and 7, -log[H+] was monitored for 17 months and equilibrium constants were determined at 9, 12 and 17 months of reaction time for the following reaction (25 degrees C, 0.1 M (Na)NO3): 收起<<

  • 【作者】

    Ramstedt M  Sjoberg S 

  • 【刊期】

    Aquatic Geochemistry SCI 2005年4期

  • 【语种】

    eng