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Hydrothermal reactions between potassium permanganate and vanadyl sulfate have been used to synthesize new forms of vanadium oxides. Depending on the reactant ratios and pH values of the reaction mixtures, two different layered materials have been identified. The first one formed at a pH value of 1.6 has an interlayer distance of 10.90 9 and a composition of K 0.16 Mn 0...
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