Solid state characterization of oxidized actinides co-crystallized with uranyl nitrate hexahydrate

Einkauf, Jeffrey D.; Burns, Jonathan D.

doi:10.1039/C9DT04000E

Title: Solid state characterization of oxidized actinides co-crystallized with uranyl nitrate hexahydrate

Abstract

Characterization of the penta- and hexavalent dioxo cations of NpO₂⁺, NpO₂²⁺, PuO₂²⁺, and AmO₂²⁺ has been carried out by diffuse reflectance UV-Vis-NIR spectroscopy, with the first observations of NpO₂⁺, NpO₂²⁺, and AmO₂²⁺ in the solid state. Absorbance measurements confirmed the presence of the higher actinides of Np, Pu, and Am, with shifts in their absorbance bands indicating the formation of the dinitrate species in the crystalline phase. The oxidized actinides were prepared in the solid state by co-crystallization with UO₂(NO₃)₂·6H₂O by a simple reduction in temperature. The hexavalent species were all co-crystallized in near proportion to UO₂²⁺ and the pentavalent species was co-crystallized in a slightly less efficient manner, roughly 83% of that of UO₂²⁺.

Authors:

^[1];

^[1]

Texas A & M Univ., College Station, TX (United States)

Publication Date:: Mon Dec 16 00:00:00 EST 2019

Research Org.:: Texas A & M Univ., College Station, TX (United States)

Sponsoring Org.:: USDOE Office of Nuclear Energy (NE)

OSTI Identifier:: 1600514

Alternate Identifier(s):: OSTI ID: 1580765

Grant/Contract Number:: NE0008653

Resource Type:: Accepted Manuscript

Journal Name:: Dalton Transactions

Additional Journal Information:: Journal Volume: 49; Journal Issue: 3; Journal ID: ISSN 1477-9226

Publisher:: Royal Society of Chemistry

Country of Publication:: United States

Language:: English

Subject:: 11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS

Citation Formats


                    Einkauf, Jeffrey D., and Burns, Jonathan D. Solid state characterization of oxidized actinides co-crystallized with uranyl nitrate hexahydrate.  United States: N. p., 2019. 
Web.  doi:10.1039/C9DT04000E.

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                    Einkauf, Jeffrey D., & Burns, Jonathan D. Solid state characterization of oxidized actinides co-crystallized with uranyl nitrate hexahydrate.  United States.  https://doi.org/10.1039/C9DT04000E

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                    Einkauf, Jeffrey D., and Burns, Jonathan D. Mon .  
"Solid state characterization of oxidized actinides co-crystallized with uranyl nitrate hexahydrate".  United States.  https://doi.org/10.1039/C9DT04000E.  https://www.osti.gov/servlets/purl/1600514.

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@article{osti_1600514,

  title        = {Solid state characterization of oxidized actinides co-crystallized with uranyl nitrate hexahydrate},

  author       = {Einkauf, Jeffrey D. and Burns, Jonathan D.},

  abstractNote = {Characterization of the penta- and hexavalent dioxo cations of NpO2+, NpO22+, PuO22+, and AmO22+ has been carried out by diffuse reflectance UV-Vis-NIR spectroscopy, with the first observations of NpO2+, NpO22+, and AmO22+ in the solid state. Absorbance measurements confirmed the presence of the higher actinides of Np, Pu, and Am, with shifts in their absorbance bands indicating the formation of the dinitrate species in the crystalline phase. The oxidized actinides were prepared in the solid state by co-crystallization with UO2(NO3)2·6H2O by a simple reduction in temperature. The hexavalent species were all co-crystallized in near proportion to UO22+ and the pentavalent species was co-crystallized in a slightly less efficient manner, roughly 83% of that of UO22+.},

  doi          = {10.1039/C9DT04000E},

  journal      = {Dalton Transactions},

  number       = 3,

  volume       = 49,

  place        = {United States},

  year         = {Mon Dec 16 00:00:00 EST 2019},

  month        = {Mon Dec 16 00:00:00 EST 2019}

}

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Title: Solid state characterization of oxidized actinides co-crystallized with uranyl nitrate hexahydrate

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