Hostname: page-component-54dcc4c588-smtgx Total loading time: 0 Render date: 2025-10-12T03:09:03.914Z Has data issue: false hasContentIssue false
  • English
  • Français

The Effects of Surface Modification on the Speciation of MetalIons Intercalated into Aluminosilicates

Published online by Cambridge University Press:  03 September 2012

Stephen R. Wasserman ,
Daniel M. Giaquinta ,
Steven E. Yuchs  and
L. Soderholm
Stephen R. Wasserman
Affiliation:
Chemistry Division, Argonne National Laboratory, 9700 S. Cass Ave., Argonne IL 60439.
Daniel M. Giaquinta
Affiliation:
Chemistry Division, Argonne National Laboratory, 9700 S. Cass Ave., Argonne IL 60439.
Steven E. Yuchs
Affiliation:
Chemistry Division, Argonne National Laboratory, 9700 S. Cass Ave., Argonne IL 60439.
L. Soderholm
Affiliation:
Chemistry Division, Argonne National Laboratory, 9700 S. Cass Ave., Argonne IL 60439.
Get access

Abstract

The effect of the addition of an organic monolayer to the surface of a claymineral on the speciation of metal ions intercalated into the clayinterlayer is probed by X-ray absorption spectroscopy. The presence of themonolayer changes the surface of the clay from hydrophilic to hydrophobic.It inhibits the interlayer ions from exchanging freely into environmentalwater and reduces the leach rate of cations out of the clay by approximatelya factor of 20. Significant changes are observed when these coated samplesare treated under hydrothermal and thermal conditions. Reductions ofuranium(VI), in the form of uranyl, and copper(II) ions occur. In addition,the uranium aggregates, forming small particles that appear similar to UO2. Comparable conglomeration occurs with lead cations andwith the reduced copper species.

Information

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 465: Symposium II – Scienfific Basis for Nuclear Waste Management XX , 1996 , 473
Copyright
Copyright © Materials Research Society 1997

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Article purchase

Temporarily unavailable

References

REFERENCES

1. Grim, R. E., Clay Mineralogy, 2nd ed. (McGraw-Hill, New York, 1968).Google Scholar
2. Rabo, Jule A., Zeolite Chemistry and Catalysis (American Chemical Society, Washington, D. C, 1976).Google Scholar
3. Brindley, G. W. and Brown, G., “Crystal Structures of Clay Minerals and Their X-ray Identification,” (Mineralogical Society, London, 1980).Google Scholar
4. Tennakoon, D. T. B., Thomas, J. M., Tricker, M. J., and Williams, J. O., J. Chem. Soc. Dalton 1974, 2207–2211 (1974).Google Scholar
5. Wasserman, S. R., Anderson, K. B., Song, K., Yuchs, S. E. and Marshall, C. L., U. S. Patent Applied For.Google Scholar
6. Maoz, R. and Sagiv, J., J. Colloid Interface Sci. 100, 465–496 (1984).Google Scholar
7. Wasserman, S. R., Tao, Y.-T., and Whitesides, G. M., Langmuir 5, 1074–1087 (1989).Google Scholar
8. Mustre de leon, J., Rehr, J. J., Zabinsky, S. I., and Albers, R. C., Phys. Rev. B44, 4146–4156(1991).Google Scholar
9. Hench, L. L., Clark, D. E., and Yen-Bower, E. L., Nucl. Chem. Waste Manag. 1, 59–75 (1980).Google Scholar
10. Cotton, F. A. and Wilkinson, G., Advanced Inorganic Chemistry, 5th ed. (John Wiley and Sons, New York, 1988).Google Scholar
11. Wasserman, S. R. (unpublished).Google Scholar
12. Lytle, F. W., Greegor, R. B., and Panson, A. J., Phys. Rev. B 37 (4), 1550–1562 (1988).Google Scholar
13. Bard, A. J., Parsons, R., and Joseph, J., “Standard Potentials in Aqueous Solutions,” (Marcel Dekker, New York, 1985).Google Scholar