Ammonium diuranate

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Ammonium diuranate
Identifiers
ChemSpider
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 100.029.078 Edit this at Wikidata
UNII
  • InChI=1S/2H3N.7O.2U/h2*1H3;;;;;;;;;/q;;7*-2;;/p+2 checkY
    Key: ZAASRHQPRFFWCS-UHFFFAOYSA-P checkY
Properties
(NH4)2U2O7
Molar mass 624.129 g·mol−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Ammonium diuranate or (ADU) ((NH4)2U2O7), is one of the intermediate chemical forms of

MOX) fuel fabrication. Although it is usually called "ammonium diuranate" as though it has a "diuranate" ion U
2O2−
7, this is not necessarily the case. It can also be called diammonium diuranium heptaoxide. The structure is said to be similar to that of uranium dioxide dihydrate.[1][2]

It is

tertiary amines in kerosene. This precipitate is then thickened and centrifuged before being calcined to uranium oxide. Canadian practice favours the production of uranium oxide from ammonium diuranate, rather than from uranyl nitrate as is the case elsewhere.[citation needed
]

Ammonium diuranate was once used to produce colored glazes in ceramics.[3] However when being fired this will decompose to uranium oxide, so the uranate was only used as a lower cost material than the fully purified uranium oxide.

References

  1. doi:10.13182/NT79-A32310
    . All types of ADU when analyzed by x-ray diffraction have a structure similar to UO3-2H2O
  2. doi:10.1016/0022-1902(62)80184-5
    .
  3. ISSN 0021-9584
    .
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