Uranyl peroxide

This article may be expanded with text translated from the corresponding article in German. (July 2014) Click [show] for important translation instructions. View a machine-translated version of the German article. Machine translation like DeepL or Google Translate is a useful starting point for translations, but translators must revise errors as necessary and confirm that the translation is accurate, rather than simply copy-pasting machine-translated text into the English Wikipedia. Consider adding a topic to this template: there are already 7,075 articles in the main category, and specifying|topic= will aid in categorization. Do not translate text that appears unreliable or low-quality. If possible, verify the text with references provided in the foreign-language article. You must provide copyright attribution in the edit summary accompanying your translation by providing an interlanguage link to the source of your translation. A model attribution edit summary is Content in this edit is translated from the existing German Wikipedia article at [[:de:Uranylperoxid]]; see its history for attribution. You should also add the template {{Translated|de|Uranylperoxid}} to the talk page. For more guidance, see Wikipedia:Translation.

Uranyl peroxide

Identifiers
CAS Number	12036-71-4 Y
3D model (JSmol)	Interactive image
ChemSpider	32816408
ECHA InfoCard	100.031.671
EC Number	234-852-1
PubChem CID	hydrate: 29645
UNII	7TIU7JF0EV
UN number	2909
InChI InChI=1S/O2.2O.U/c1-2;;;/q3*-2;+6 Key: XFDGHOMYEXQKDC-UHFFFAOYSA-N
SMILES [O-2].[O-2].[O-][O-].[U+6]
Properties
Chemical formula	UO4·nH2O
Molar mass	302.03 g/mol (as UO4)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Y  (what is YN ?)
Infobox references

Uranyl peroxide or uranium peroxide hydrate (UO₄·nH₂O) is a pale-yellow, soluble peroxide of uranium. It is found to be present at one stage of the enriched uranium fuel cycle and in yellowcake prepared via the in situ leaching and resin ion exchange system. This compound, also expressed as: UO₃·(H₂O₂)·(H₂O), is very similar to uranium trioxide hydrate UO₃·nH₂O. The dissolution behaviour of both compounds are very sensitive to the hydration state (n can vary between 0 and 4). One main characteristic of uranium peroxide is that it consists of small needles with an average AMAD of about 1.1 µm.

The uranyl minerals studtite, UO₄·4H₂O, and metastudtite, UO₄·2H₂O, are the only minerals discovered to date found to contain peroxide. The product is a light yellow powder.

Synthetization[]

In general, uranyl peroxide can be obtained from a solution of uranium (VI) by adding a peroxide, usually hydrogen peroxide solution. The dihydrate is obtained from a boiling solution of uranyl nitrate with the addition of hydrogen peroxide and drying of the precipitate, while the trihydrate is precipitated from a solution of ammonium uranyl oxalate.^[1]

References[]

• Some Chemistry of Uranium
• Freeman, Marvin D.; Stover, Dennis E. (1999). "The Smith Ranch Project: a 1990s In-situ Uranium Mine". The Uranium Institute Twenty Fourth Annual International Symposium. The Uranium Institute. Retrieved 22 November 2011.
• Kubatko, K. -A. H.; Helean, K. B.; Navrotsky, A.; Burns, P. C. (2003). "Stability of Peroxide-Containing Uranyl Minerals". Science. 302 (5648): 1191–1193. doi:10.1126/science.1090259. PMID 14615533. S2CID 44415700.

This inorganic compound–related article is a stub. You can help Wikipedia by .

• v
• t