Ytterbium (III) oxide

Crystal structure
__ Yb 3+      __ O 2−
General
Surname	Ytterbium (III) oxide
other names	Diytterbium trioxide Ytterbium sesquioxide Yttria Ytterbium oxide (ambiguous)
Ratio formula	Yb 2 O 3
Brief description	White dust
External identifiers / databases
CAS number 1314-37-0 EC number 215-234-0 ECHA InfoCard 100,013,850 PubChem 4124403 Wikidata Q416720
properties
Molar mass	394.08 g mol −1
Physical state	firmly
density	9.17 g cm −3
Melting point	2355 ° C
boiling point	4070 ° C
solubility	soluble in acids
Refractive index	1.93542
safety instructions
GHS labeling of hazardous substances no GHS pictograms H and P phrases H: no H-phrases P: no P-phrases
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . Refractive index: Na-D line , 20 ° C

Ytterbium (III) oxide is a chemical compound from the group of oxides .

Occurrence

Ytterbium (III) oxide occurs naturally in traces in the mineral gadolinite . It was isolated from this in 1878 by Jean Charles Galissard de Marignac .

Extraction and presentation

Ytterbium (III) oxide can be obtained by reacting ytterbium with oxygen .

${\displaystyle \mathrm {4\ Yb+3\ O_{2}\longrightarrow 2\ Yb_{2}O_{3}} }$

It can also be obtained by thermal decomposition of ytterbium carbonate or ytterbium oxalate at temperatures around 700 ° C.

${\displaystyle \mathrm {Yb_{2}(C_{2}O_{4})_{3}\longrightarrow Yb_{2}O_{3}+3\ CO_{2}+3\ CO} }$

properties

Ytterbium (III) oxide

Ytterbium (III) oxide is a white powder. Like the other trivalent oxides of the heavier lanthanides, it crystallizes in a lanthanide-C cubic structure. It reacts with carbon tetrachloride or hot hydrochloric acid to form ytterbium (III) chloride .

${\displaystyle \mathrm {2\ Yb_{2}O_{3}+3\ CCl_{4}\longrightarrow 4\ YbCl_{3}+3\ CO_{2}} }$

${\displaystyle \mathrm {Yb_{2}O_{3}+6\ HCl\longrightarrow 2\ YbCl_{3}+3\ H_{2}O} }$

use

Ytterbium (III) oxide is used as an additive for special alloys and dielectric ceramic materials, as a catalyst and in special glasses. It can also be used as an additive for carbon electrodes in arc lamps , which produce a very bright light.

Individual evidence

1. ↑ ^{a b c d e f} data sheet Ytterbium (III) oxide, 99.99% trace metals basis from Sigma-Aldrich , accessed on January 28, 2019 ( PDF ).
2. ^ ^{A b} Thomas Bauer: Thermophotovoltaics: Basic Principles and Critical Aspects of System Design . Springer Berlin Heidelberg, 2011, ISBN 978-3-642-19964-6 , p. 20 ( limited preview in Google Book search).
3. ^ ^{A b} George WA Milne: Gardner's commercially important chemicals . John Wiley & Sons, 2005, ISBN 978-0-471-73518-2 , pp. 767 ( limited preview in Google Book search).
4. ↑ O. Medenbach et al., Refractive index and optical dispersion of rare earth oxides using a small-prism technique, J. Opt. A: Pure Appl. Opt., 2001, 3, pp. 174-177; doi : 10.1088 / 1464-4258 / 3/3/303 .
5. ^ ^{A b} 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. 302 ( limited preview in Google Book search).
6. ^ ^{A b} A. F. Holleman , E. Wiberg , N. Wiberg : Textbook of Inorganic Chemistry . 102nd edition. Walter de Gruyter, Berlin 2007, ISBN 978-3-11-017770-1 , pp. 1938-1944.
7. ↑ Gerd Meyer, Lester R. Morss: Synthesis of lanthanide and actinide compounds . Springer Netherlands, 1990, ISBN 978-0-7923-1018-1 , pp. 196 ( limited preview in Google Book search).
8. ↑ VF Goryushkin, SA Zalymova, AI Poshevneva. In: Russ. J. Inorg. Chem. 1990, 35, 12, pp. 1749-1752.
9. ↑ Joerg Sebastian, Hans-Joachim Seifert: Ternary chlorides in the systems ACl / YbCl3 (A = Cs, Rb, K). In: Thermochimica Acta. 318, 1998, pp. 29-37, doi : 10.1016 / S0040-6031 (98) 00326-8 .