- The reaction of barium manganate with acids and their precursors
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A simple and easy preparative route to obtain permanganic acid and permanganate salts from barium manganate and sulphuric acid is described. Sulphuric acid reacts with barium manganate to produce sparingly soluble barium sulphate and well-soluble permanganic acid or barium permanganate, these in turn can be used to prepare other metal permanganates.
- Kotai, Laszlo,Keszler, Agnes,Pato, Janos,Holly, Sandor,Banerji, Kalyan K.
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p. 966 - 968
(2007/10/03)
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- Cathodic behavior of alkali manganese oxides from permanganate
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The reaction of potassium, sodium, and lithium permanganate in water at 170°C leads directly to potassium, sodium, and lithium manganese dioxides, AyMnO · nH2O, with a R3m rhombohedral structure. These crystalline layered structures after dehydration readily and reversibly react with lithium through an intercalation mechanism. The capacity for lithium is a function of the alkali ion present, and the larger potassium ion maintains the capacity best. For lithium there is a tendency to convert to the spinel structure which leads to loss of capacity.
- Chen, Rongji,Whittingham, M. Stanley
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