Characterization of a Pu-bearing zirconolite-rich synroc

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A titanate-based ceramic waste form, rich in phases structurally related to zirconolite (CaZrTi{sub 2}O{sub 7}), is being developed as a possible method for immobilizing excess plutonium from dismantled nuclear weapons. As part of this program, Lawrence Livermore National Laboratory (LLNL) produced several ceramics that were then characterized at Argonne National Laboratory (ANL). The plutonium- loaded ceramic was found to contain a Pu-Gd zirconolite phase but also contained plutonium titanates, Gd-polymignyte, and a series of other phases. In addition, much of the Pu was remained as PuO{sub 2- x}. The Pu oxidation state in the zirconolite was determined to be mainly ... continued below

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9 p.

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Buck, E.C.; Ebbinghaus, B.; Bakel, A.J. & Bates, J.K. December 31, 1996.

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Description

A titanate-based ceramic waste form, rich in phases structurally related to zirconolite (CaZrTi{sub 2}O{sub 7}), is being developed as a possible method for immobilizing excess plutonium from dismantled nuclear weapons. As part of this program, Lawrence Livermore National Laboratory (LLNL) produced several ceramics that were then characterized at Argonne National Laboratory (ANL). The plutonium- loaded ceramic was found to contain a Pu-Gd zirconolite phase but also contained plutonium titanates, Gd-polymignyte, and a series of other phases. In addition, much of the Pu was remained as PuO{sub 2- x}. The Pu oxidation state in the zirconolite was determined to be mainly Pu{sup 4+}, although some Pu{sub 3+} was believed to be present.

Physical Description

9 p.

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INIS; OSTI as DE97003247

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  • 1996 Fall meeting of the Materials Research Society (MRS), Boston, MA (United States), 2-6 Dec 1996

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  • Other: DE97003247
  • Report No.: ANL/CMT/CP--90407
  • Report No.: CONF-961202--88
  • Grant Number: W-31109-ENG-38
  • Office of Scientific & Technical Information Report Number: 461405
  • Archival Resource Key: ark:/67531/metadc677423

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Office of Scientific & Technical Information Technical Reports

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  • December 31, 1996

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  • July 25, 2015, 2:21 a.m.

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  • Dec. 14, 2015, 6:28 p.m.

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Buck, E.C.; Ebbinghaus, B.; Bakel, A.J. & Bates, J.K. Characterization of a Pu-bearing zirconolite-rich synroc, article, December 31, 1996; Illinois. (digital.library.unt.edu/ark:/67531/metadc677423/: accessed December 15, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.