Convenient routes for the preparation of barium permanganate and other permanganate salts

László Kótai, István E. Sajó, István Gács, Pradeep K. Sharma, Kalyan K. Banerji

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2 Citations (Scopus)


Two convenient methods were developed to transform KMnO4 into barium permanganate and other permanganate salts via BaMnO4 or Mn2O7 intermediates. Pure BaMnO4 was prepared by the reaction of KMnO4 with KI in the presence of BaCl2 and NaOH. Hydrothermal reaction of barium manganate with excess carbon dioxide for 1.5 h at 100°C led to barium-permanganate with almost quantitative yield. Mn2O7 was prepared by means of the reaction of KMnO4 and sulfuric acid monohydrate in a two-phase (CCl 4-H2SO4.H2O) system. In the presence of excess barium carbonate and catalytic amount of water barium permanganate could be obtained with a moderate yield. Similarly, other permanganate salts (Zn, Cd, Cu, Mg, Ca, Ni, Al, Fe, Ce, rare earth metals) were prepared by substituting the BaCO3 for the appropriate metal oxides, hydroxides or carbonates.

Original languageEnglish
Pages (from-to)1257-1260
Number of pages4
JournalZeitschrift fur Anorganische und Allgemeine Chemie
Issue number8
Publication statusPublished - Jul 2 2007


  • Barium manganate
  • Barium permanganate
  • Dimanganese heptaoxide
  • Hydrothermal reaction
  • Metal permanganates

ASJC Scopus subject areas

  • Inorganic Chemistry

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