|Molar mass||397.932 g/mol|
|Melting point||2490 °C|
|Boiling point||3980 °C|
|Solubility in other solvents||moderate|
|Band gap||5.5 eV|
|Other anions||Lutetium(III) chloride|
|Other cations||Ytterbium(III) oxide|
|Supplementary data page|
|n, εr, etc.|
Solid, liquid, gas
|Spectral data||UV, IR, NMR, MS|
|Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)|
|(what is: / ?)|
Lutetium(III) oxide, a white solid, is a cubic compound of lutetium sometimes used in the preparation of specialty glasses. It is also called lutecia. It is a lanthanide oxide, also known as a rare earth.
In 1879, Jean-Charles-Galissard de Margnac (1817–1894), a French chemist, claimed to have discovered ytterbium, but actually he had found a mixture of elements. In 1907, a French chemist Georges Urbain (1872–1938) reported that ytterbium was a mixture of two new elements and not a single element. Two more chemists came to the same conclusion. They were from Germany, Karl Auer (1858–1929) and America, Charles James (1880–1926). The two compounds they discovered were neoytterbium and lutecium. However, none of these chemists actually dealt with pure lutetium. The compound they found was usually lutetium oxide.
The product of Lu2O3 and palladium(II) oxide (PdO) (formed at high pressure and temperature in the presence of potassium chlorate) has a potential use in superconducting materials. Lutetium(III) oxide is an important raw material for laser crystals. It also has specialized uses in ceramics, glass, phosphors, and lasers. Lutetium(III) oxide is used as a catalyst in cracking, alkylation, hydrogenation, and polymerization. The band gap of lutetium oxide is 5.5 eV. 
- "Optical and dielectric characteristics of the rare-earth metal oxide Lu2O3," S. V. Ordin and A. I. Shelykh, Semiconductors, Vol. 44, Num. 5 (2010), pp. 558-563, DOI: 10.1134/S1063782610050027
- Lutetium Oxide. 1997-2007. Metall Rare Earth Limited.<http://www.metall.com.cn/luo.htm?gclid=CKrqtNDdyIsCFR0CPwodEkZnHw>
- Lutetium. 2005-2006. Bookrags.<http://www.bookrags.com/research/lutetium/>
- Lutetium (III) oxide. 2007. Sigma Aldrich.<http://www.sigmaaldrich.com/catalog/search/ProductDetail/ALDRICH/289191>
- "Optical and dielectric characteristics of the rare-earth metal oxide Lu2O3," S. V. Ordin and A. I. Shelykh, Semiconductors Volume 44, Number 5 (2010), 558-563, DOI: 10.1134/S1063782610050027
- Macintyre, J.E. (1992). Dictionary of Inorganic Compounds volumes 1-3. London, UK: Chapman & Hall.
- Trotman-Dickenson, A.F. (1973). Comprehensive Inorganic Chemistry. Oxford, UK: Pergamon.