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Uranyl peroxide information


Uranyl peroxide
Uranyl peroxide
Identifiers
CAS Number
  • 12036-71-4 checkY
3D model (JSmol)
  • Interactive image
ChemSpider
  • 32816408
ECHA InfoCard 100.031.671 Edit this at Wikidata
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).
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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.

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Uranyl peroxide

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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...

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Yellowcake

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compounds identified in yellowcakes include uranyl hydroxide, uranyl sulfate, sodium para-uranate, and uranyl peroxide, along with various uranium oxides. Modern...

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Uranium trioxide

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uranium oxide also leads to the formation of metastudtite, a more stable uranyl peroxide, often found in the surface of spent nuclear fuel exposed to water...

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Uranium oxide

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yellowcake typically contains 70 to 90 percent triuranium octoxide) Uranyl peroxide (UO2O2 or UO4) Amorphous uranium(VI) oxide (Am-U2O7) Uranium dioxide...

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Studtite

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Despite their apparent chemical simplicity, these two uranyl species are the only reported peroxide minerals. They may also be readily formed on the surface...

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Uranyl oxalate

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Uranyl oxalate (UO2C2O4) is a pale yellow powdered uranyl salt. It is often encountered in industrial nuclear processes at both the front and back-end...

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List of inorganic compounds

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fluoride – UF6 Uranyl peroxide – UO4 Uranium dioxide – UO2 Uranyl carbonate – UO2CO3 Uranyl chloride – UO2Cl2 Uranyl fluoride – UO2F2 Uranyl hydroxide –...

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List of energy abbreviations

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Change UO2—uranium dioxide (nuclear) UO3—uranium trioxide (nuclear) UO4—uranyl peroxide (nuclear) UOX—uranium oxide (nuclear) URR—Ultimate Recoverable Resources...

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Nuclear forensics

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method has previously been demonstrated on the thermal treatment of uranyl peroxide powders, which yield distinctive yellow to brown hues. Hence, this...

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Uranium

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uranium(VI) state and is known to form compounds such as uranyl carbonate, uranyl chloride and uranyl sulfate. UO2+ 2 also forms complexes with various organic...

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Uranium compounds

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uranium(VI) state and is known to form compounds such as uranyl carbonate, uranyl chloride and uranyl sulfate. UO2+ 2 also forms complexes with various organic...

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Actinide

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linear "uranyl" group, UO2+ 2. Between 4 and 6 ligands can be accommodated in an equatorial plane perpendicular to the uranyl group. The uranyl group acts...

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Chromate and dichromate

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chromate potassium dichromate Chromates react with hydrogen peroxide, giving products in which peroxide, O2− 2, replaces one or more oxygen atoms. In acid solution...

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Actinometer

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K[Cr(NH3)2(NCS)4] reacts in the near-UV region although it is thermally unstable. Uranyl oxalate has been used historically but is very toxic and cumbersome to analyze...

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DNA

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(lead-specific), the CA1-3 DNAzymes (copper-specific), the 39E DNAzyme (uranyl-specific) and the NaA43 DNAzyme (sodium-specific). The NaA43 DNAzyme, which...

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Oxide

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Oxycations are rarer, some examples being nitrosonium (NO+), vanadyl (VO2+), and uranyl (UO2+2). Of course many compounds are known with both oxides and other groups...

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Ion

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the individual metal centre with a polyatomic complex, as shown by the uranyl ion example. If an ion contains unpaired electrons, it is called a radical...

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Metalloprotein

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(lead-specific), the CA1-3 DNAzymes (copper-specific), the 39E DNAzyme (uranyl-specific) and the NaA43 DNAzyme (sodium-specific). Calmodulin is an example...

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Bismuth phosphate process

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they found that they could precipitate it by adding hydrogen peroxide to a dilute uranyl nitrate solution. They were then able to get the process to work...

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Photocatalysis

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article discussing the deterioration of oxalic acid in the presence of uranyl salts under illumination, while in 1913, Landau published an article explaining...

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BTBP

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BTBP to form a 1:1 complex, where the axial sites are occupied with the uranyl oxygen atoms. The BTBPs are also able to bind to cyclopentadienyl complexes...

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List of UN numbers 2901 to 3000

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No. no longer in use) Uranyl nitrate hexahydrate solution (UN No. no longer in use) UN 2981 7 (UN No. no longer in use) Uranyl nitrate, solid (UN No....

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List of minerals recognized by the International Mineralogical Association

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(9 and 10 ed) is not controversial. Dmisteinbergite (feldspar, 9.EG.15), uranyl sorovanadates (4.HD. ids) and silica family (4.DA. ids) are some exceptions...

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List of CAS numbers by chemical compound

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uranium(II) oxide 13598–56–6 UO2 uranium(IV) oxide 1344–57–6 UO2(NO3)2 uranyl nitrate 10102–06–4 UO3 uranium(VI) oxide 1344–58–7 US uranium(II) sulfide...

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Radiation damage

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chromates) and fission products (e.g. pertechnetate and periodate anions, uranyl and neptunyl cations). Absorption of neutrons in hydrogen nuclei leads to...

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