Preparation and Occurrence
MnO can be prepared by the reduction of any higher oxide with hydrogen e.g.:
- MnO2 + H2 → MnO + H2O
Commercially it is prepared by reduction of MnO2 with hydrogen, carbon monoxide or methane:
- MnO2 + CO → MnO + CO2
MnO can also be prepared by heating MnCO3:
- MnCO3 → MnO + CO2
This calcining process is conducted anaerobically to prevent formation of Mn2O3. MnO occurs in nature as the rare mineral manganosite.
Read more about this topic: Manganese(II) Oxide
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