Praseodymium (III) oxide
Structural formula | ||||||||||||||||
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__ Pr 3+ __ O 2− | ||||||||||||||||
General | ||||||||||||||||
Surname | Praseodymium (III) oxide | |||||||||||||||
other names |
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Molecular formula | Pr 2 O 3 | |||||||||||||||
Brief description |
yellow-green powder |
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properties | ||||||||||||||||
Molar mass | 329.81 g mol −1 | |||||||||||||||
Physical state |
firmly |
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density |
6.9 g cm −3 |
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Melting point |
2183 ° C |
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boiling point |
3760 ° C |
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solubility |
almost insoluble in water |
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safety instructions | ||||||||||||||||
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Toxicological data | ||||||||||||||||
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . |
Praseodymium (III) oxide is a chemical compound from the group of oxides .
Extraction and presentation
Like praseodymium (IV) oxide PrO 2, praseodymium (III) oxide can be obtained by reacting praseodymium with oxygen .
It can also be obtained by reducing the black praseodymium (III, IV) oxide Pr 6 O 11 with hydrazine or by dehydrating praseodymium (III) hydroxide.
properties
Praseodymium (III) oxide is a yellow powder that is insoluble in water. It comes in both a white hexagonal shape and a yellow to green cubic crystal structure. In moist conditions it reacts quickly to form praseodymium (III) hydroxide .
use
Praseodymium (III) oxide is used to color glass and ceramics. It is also being studied as a material for semiconductor devices.
Individual evidence
- ↑ a b ESPI Metals: Praseodymium Oxide ( Memento from January 22, 2013 in the web archive archive.today )
- ↑ a b c d David R. Lide (Ed.): CRC Handbook of Chemistry and Physics . 90th edition. (Internet version: 2010), CRC Press / Taylor and Francis, Boca Raton, FL, Properties of the Elements and Inorganic Compounds, pp. 4-84.
- ↑ a b c data sheet Praseodymium (III) oxide, 99.9% trace metals basis from Sigma-Aldrich , accessed on February 10, 2019 ( PDF ).
- ^ A b c Robert E. Krebs: The history and use of our earth's chemical elements: a reference guide . Greenwood Pub Group, 2006, ISBN 978-0-313-33438-2 , pp. 283 ( limited preview in Google Book search).
- ↑ Inorganic Syntheses . Wiley-Interscience, 2006, ISBN 978-0-470-13268-5 , pp. 39 ( limited preview in Google Book search).
- ^ Jarek Dąbrowski, Eicke R. Weber: Predictive simulation of semiconductor processing: status and challenges . S. 266 ( limited preview in Google Book search).
- ^ BL Treu, WG Fahrenholtz, MJ O'Keefe: ECS transactions . Electrochemical Society, 2005, ISBN 978-1-56677-893-0 , pp. 53–54 ( limited preview in Google Book search).
- ↑ R. Ekwal Sah: Silicon nitride, silicon dioxide, and emerging dielectrics 9, Issue 3 . Electrochemical Society, 2007, ISBN 978-1-56677-552-6 , pp. 99 ( limited preview in Google Book search).