Lithium oxide
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Overview
Lithium oxide (or lithia is an [http://worldselectshop.com/?id=9361 [http://worldselectshop.com/?id=9361 compound]. Lithium oxide is formed along with small amounts of peroxide] when lithium metal is burned in the air and combines with oxygen[1]:
- 4Li+O2 → 2Li2O.
Pure Li2O can be produced by the decomposition] of peroxide], Li2O2 at 450°C
- 2Li2O2 → 2Li2O + O2
Structure
In the solid state lithium oxide adopts an antifluorite structure which is related to the fluoride|CaF2], fluorite structure with Li cations substituted for fluoride anions and oxide anions substituted for calcium cations.
The ground state gas phase Li2O molecule is linear with a bond length consistent with strong ionic bonding.[2][3] theory] would predict a bent shape similar to H2O.
Uses
Lithium oxide is used as a [http://worldselectshop.com/?id=9361 in ceramic glazes; and creates blues with [http://worldselectshop.com/?id=9361 and pinks with [http://worldselectshop.com/?id=9361 Lithium oxide reacts with [http://worldselectshop.com/?id=9361 and [http://worldselectshop.com/?id=9361 and should be isolated from them.
Its usage is also being investigated for non-destructive emission spectroscopy evaluation and degradation monitoring within barrier coating] systems. It can be added as a co-dopant with yttria in the zirconia ceramic top coat, without a large decrease in expected service life of the coating. At high heat, lithium oxide emits a very detectable spectral pattern, which increases in intensity along with degradation of the coating. Implementation would allow in situ monitoring of such systems, enabling an efficient means to predict lifetime until failure or necessary maintenance.
See also
References
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- ↑ Template:Greenwood&Earnshaw
- ↑ Wells A.F. (1984) Structural Inorganic Chemistry 5th edition Oxford Science Publications ISBN 0-19-855370-6
- ↑ A spectroscopic determination of the bond length of the LiOLi molecule: Strong ionic bonding, D. Bellert, W. H. Breckenridge, J. Chem. Phys. 114, 2871 (2001); doi:10.1063/1.1349424
External links