Niobium oxide
Niobium oxide, archaically called columbium oxide,[1] may refer to:
- Niobium monoxide (niobium(II) oxide), NbO
- Niobium dioxide (niobium(IV) oxide), NbO2
- Niobium pentoxide (niobium(V) oxide), Nb2O5
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).[2]
- Nb12O29 and Nb47O116
Natural niobium oxide is sometimes known as niobia.
References
[edit]- ^ Kamat, G. R.; Gupta, C. K. (Oct 1971). "Open aluminothermic reduction of columbium (Nb) pentoxide and purification of the reduced metal". Metallurgical Transactions. 2 (10): 2817–2823. doi:10.1007/BF02813257. ISSN 0026-086X.
- ^ Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. ISBN 978-0-08-037941-8.