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

Abstract

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.

Authors:
; ;
Publication Date:
Research Org.:
Argonne National Laboratory, Argonne, IL (US)
Sponsoring Org.:
US Department of Energy (US)
OSTI Identifier:
751840
Report Number(s):
ANL/CHM/CP-99588
TRN: US0003155
DOE Contract Number:  
W-31109-ENG-38
Resource Type:
Conference
Resource Relation:
Conference: MRS '99 Fall Meeting, Boston, MA (US), 11/29/1999--12/03/1999; Other Information: PBD: 16 Feb 2000
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 12 MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; THORIUM COMPOUNDS; URANYL COMPOUNDS; ION EXCHANGE; ZEOLITES; SMECTITE; SORPTIVE PROPERTIES; CRYSTAL STRUCTURE; ELECTRONIC STRUCTURE; RADIONUCLIDE MIGRATION; WASTE FORMS

Citation Formats

Wasserman, S R, Soderholm, L, and Giaquinta, D M. The structure of actinide ions exchanged into native and modified zeolites and clays. United States: N. p., 2000. Web.
Wasserman, S R, Soderholm, L, & Giaquinta, D M. The structure of actinide ions exchanged into native and modified zeolites and clays. United States.
Wasserman, S R, Soderholm, L, and Giaquinta, D M. 2000. "The structure of actinide ions exchanged into native and modified zeolites and clays". United States. https://www.osti.gov/servlets/purl/751840.
@article{osti_751840,
title = {The structure of actinide ions exchanged into native and modified zeolites and clays},
author = {Wasserman, S R and Soderholm, L and Giaquinta, D M},
abstractNote = {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.},
doi = {},
url = {https://www.osti.gov/biblio/751840}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Feb 16 00:00:00 EST 2000},
month = {Wed Feb 16 00:00:00 EST 2000}
}

Conference:
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