Plutonium hydride

In this article, we will delve into the fascinating world of Plutonium hydride, exploring its multiple facets and its impact on different aspects of today's society. Plutonium hydride has been an object of study and interest for many years, both for its historical relevance and for its influence in the contemporary world. Throughout the next lines, we will analyze in depth the different aspects that make Plutonium hydride a topic of debate and reflection, as well as its relevance in different contexts and scenarios. From its impact on the economy to its influence on popular culture, Plutonium hydride has left a profound mark on people's lives, and it is essential to understand its importance in order to better understand the world around us.

Plutonium hydride
Names
IUPAC name
Plutonium dihydride (excess hydrogen)
Systematic IUPAC name
Plutonium(2+) hydride
Other names
Plutonium dihydride

Plutonium(II) hydride

Plutonous hydride
Identifiers
3D model (JSmol)
ChemSpider
  • InChI=1S/Pu.2H/q+2;2*-1 ☒N
    Key: IPKHWWGTRXXYCX-UHFFFAOYSA-N ☒N
  • ..
Properties
H2Pu
Molar mass 246 g·mol−1
Appearance Black, opaque crystals
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa).
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Plutonium hydride is a non-stoichiometric chemical compound with the formula PuH2+x. It is one of two characterized hydrides of plutonium; the other is PuH3. PuH2+x is non-stoichiometric with a composition range of PuH2 – PuH2.7. Metastable stoichiometries with an excess of hydrogen (PuH2.7 – PuH3) can also be formed. PuH2 has a cubic structure. It is readily formed from the elements at 1 atmosphere at 100–200°C: When the stoichiometry is close to PuH2 it has a silver appearance, but gets blacker as the hydrogen content increases, additionally the color change is associated with a reduction in conductivity.

Pu + H2 → PuH2

Studies of the reaction of plutonium metal with moist air at 200–350°C showed the presence of cubic plutonium hydride on the surface along with Pu2O3, PuO2 and a higher oxide identified by X-ray diffraction and X-ray photoelectron spectroscopy as the mixed-valence phase PuIV3−xPuVIxO6+x. Investigation of the reaction performed without heating suggests that the reaction of Pu metal and moist air the production of PuO2 and a higher oxide along with adsorbed hydrogen, which catalytically combines with O2 to form water.

Plutonium dihydride on the surface of hydrided plutonium acts as a catalyst for the oxidation of the metal with consumption of both O2 and N2 from air.

See also

References

  1. ^ a b c Gerd Meyer, 1991, Synthesis of Lanthanide and Actinide Compounds Springer, ISBN 0-7923-1018-7.
  2. ^ The Chemistry of the Actinide and Transactinide Elements, Lester R. Morss, Norman M. Edelstein, J. Fuger, Springer, 2010, ISBN 9789048131464
  3. ^ J. L. Stakebake, D. T. Larson, J. M. Haschke: Characterization of the Plutonium-water Reaction II: Formation of a Binary Oxide containing Pu(VI), Journal of Alloys and Compounds, 202, 1–2, 1993, 251–263, doi:10.1016/0925-8388(93)90547-Z.
  4. ^ J. M. Haschke, T. H. Allen, L. A. Morales: Surface and Corrosion Chemistry of Plutonium, Los Alamos Science, 2000, 252.
  5. ^ John M. Haschke Thomas H. Allen: Plutonium Hydride, Sesquioxide and Monoxide Monohydride: Pyrophoricity and Catalysis of Plutonium Corrosion, Journal of Alloys and Compounds, 320, 1, 2001, 58–71, doi:10.1016/S0925-8388(01)00932-X.
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