Skip to main content

Advertisement

Table 1 Chemical analyses and average manganese oxidation states of the synthetic “c-disordered” H+-birnessites

From: Formation of todorokite from “c-disordered” H+-birnessites: the roles of average manganese oxidation state and interlayer cations

Reaction condition Ratio of MnO4 /Mn2+ Sample Na (mmol/g) K (mmol/g) Mn (mmol/g) AOS
KMnO4 + NaOH + MnCl2 (NaCl pre-exchange) 0.42 0.42-Na-H-Bir 1.61 0.20 9.84 3.58
KMnO4 + NaOH + MnCl2 (NaCl pre-exchange) 0.52 0.52-Na-H-Bir 1.64 0.03 9.68 3.63
KMnO4 + NaOH + MnCl2 (NaCl pre-exchange) 0.67 0.67-Na-H-Bir 2.29 0.05 8.78 3.74
KMnO4 + NaOH + MnCl2 (KCl pre-exchange) 0.52 0.52-K-H-Bir 0.01 2.43 9.15 3.66
KMnO4 + NaOH + MnCl2 0.52 0.52-H-Bir 0.07 0.61 9.56 3.64