The structure of actinide ions exchanged into native and modified zeolites and clays

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X-ray absorption spectroscopy (XAS) has been used to investigate the structure and valence of thorium (Th{sup 4+}) and uranyl (UO{sub 2}{sup 2+}) cations exchanged into two classes of microporous aluminosilicate minerals: zeolites and smectite clays. XAS is also employed to examine the fate of the exchanged cations after modification of the mineral surface using self-assembled organic films and/or exposure to hydrothermal conditions. These treatments serve as models for the forces that ultimately determine the chemical fate of the actinide cations in the environment. The speciation of the cations depends on the pore size of the aluminosilicate, which is fixed for ... continued below

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8 p.

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Wasserman, S. R.; Soderholm, L. & Giaquinta, D. M. February 16, 2000.

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  • Argonne National Laboratory
    Publisher Info: Argonne National Laboratory, Argonne, IL (United States)
    Place of Publication: Argonne, Illinois

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X-ray absorption spectroscopy (XAS) has been used to investigate the structure and valence of thorium (Th{sup 4+}) and uranyl (UO{sub 2}{sup 2+}) cations exchanged into two classes of microporous aluminosilicate minerals: zeolites and smectite clays. XAS is also employed to examine the fate of the exchanged cations after modification of the mineral surface using self-assembled organic films and/or exposure to hydrothermal conditions. These treatments serve as models for the forces that ultimately determine the chemical fate of the actinide cations in the environment. The speciation of the cations depends on the pore size of the aluminosilicate, which is fixed for the zeolites and variable for the smectites.

Physical Description

8 p.

Notes

INIS; OSTI as DE00751840

Medium: P; Size: 8 pages

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  • MRS '99 Fall Meeting, Boston, MA (US), 11/29/1999--12/03/1999

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  • Report No.: ANL/CHM/CP-99588
  • Grant Number: W-31109-ENG-38
  • Office of Scientific & Technical Information Report Number: 751840
  • Archival Resource Key: ark:/67531/metadc702339

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  • February 16, 2000

Added to The UNT Digital Library

  • Sept. 12, 2015, 6:31 a.m.

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  • April 11, 2017, 7:06 p.m.

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Wasserman, S. R.; Soderholm, L. & Giaquinta, D. M. The structure of actinide ions exchanged into native and modified zeolites and clays, article, February 16, 2000; Argonne, Illinois. (digital.library.unt.edu/ark:/67531/metadc702339/: accessed July 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.