Formation of Lanthanum Hydroxide and Oxide via Precipitation |
| Journal |
Solid State Phenomena (Volume 135) |
| Volume |
Nanocomposites and Nanoporous Materials VIII |
| Edited by |
Chang Kyu Rhee |
| Pages |
23-26 |
| DOI |
10.4028/www.scientific.net/SSP.135.23 |
| Online since |
February, 2008 |
| Authors |
So Jin Kim,
Won Kyu Han,
Sung Goon Kang,
Min Su Han,
Young Hun Cheong
|
| Keywords |
La(OH)3, La2O3, Precipitation, TG/DTA, X-Ray Diffraction (XRD) |
| Abstract |
Lanthanum hydroxide and oxide were prepared by the precipitation method in an aqueous
medium at room temperature. The precipitate was examined using thermal analysis, X-ray diffraction
and Scanning Electron Microscopy to investigate the phase evaluation and the thermal
transformation by decomposition. The as-precipitated powder from the precipitation method was
hexagonal La(OH)3. The lanthanum hydroxide was decomposed to oxide in two-steps as La(OH)3 →
LaOOH + H2O and 2LaOOH → La2O3 + H2O. |
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