Niobium oxide

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Niobium oxide, sometimes called columbium oxide, may refer to:

In addition to the above, other distinct oxides exist

  • general formula Nb3n+1O8n−2 where n ranges from 5 - 8 inclusive, e.g. Nb8O19 (Nb16O38).[1]
  • Nb12O29 and Nb47O116

Natural niobium oxide is sometimes known as niobia.


  1. ^ Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. ISBN 0-08-037941-9.