Hostname: page-component-745bb68f8f-kw2vx Total loading time: 0 Render date: 2025-01-15T07:00:31.425Z Has data issue: false hasContentIssue false
  • English
  • Français

Development of High-Temperature Uv-Vis-Nir Spectroscopy for the Measurement of Free Energies of Complexation at Elevated Temperatures

Published online by Cambridge University Press:  28 February 2011

Piotr Robouch ,
Pat Grant ,
Richard A. Torres ,
P. A. Baisden  and
R. J. Silva
Piotr Robouch
Affiliation:
Nuclear Chemistry Division L-234, Lawrence Livermore National Laboratory, Livermore, CA 94550.
Pat Grant
Affiliation:
Nuclear Chemistry Division L-234, Lawrence Livermore National Laboratory, Livermore, CA 94550.
Richard A. Torres
Affiliation:
Nuclear Chemistry Division L-234, Lawrence Livermore National Laboratory, Livermore, CA 94550.
P. A. Baisden
Affiliation:
Nuclear Chemistry Division L-234, Lawrence Livermore National Laboratory, Livermore, CA 94550.
R. J. Silva
Affiliation:
Nuclear Chemistry Division L-234, Lawrence Livermore National Laboratory, Livermore, CA 94550.
Get access

Abstract

We have developed instrumentation capable of measuring optical absorption spectra over a wavelength range of 200–1200 nm and a temperature range of 20–100°C. This fiber-optic based spectrometer generates data which allow the computation of metal-ligand equilibrium constants. Studies at five temperatures have been completed using praseodymium-diglycolate as a model system. Fundamental thermodynamic values (free energies, enthalpies, entropies) were obtained from the experimentally-determined stability constants.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 212: Symposium P – Scientific Basis for Nuclear Waste Management XIV , 1990 , 545
Copyright
Copyright © Materials Research Society 1991

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.)

References

REFERENCES

1. Martell, A.E. and Smith, R.M., Critical Stability Constants, 6 vols. (Plenum Press, New York, 1974–1989).Google Scholar
2. Hoffman, D.C. and Choppin, G.R., J. Chem. Educ. 63, 1059 (1986).Google Scholar
3. Hartley, F.R., Burgess, C., and Alcock, R.M., Solution Equilibria, (Ellis Horwood, Chichester, 1980), Chapter 8.Google Scholar
4. Grenthe, I. and Ots, H., Acta Chem. Scand. 26, 1217 (1972).Google Scholar
5. Torres, R.A., Palmer, C.E.A., Baisden, P.A., Russo, R.E., and Silva, R.J., Anal. Chem. 62, 298 (1990).Google Scholar
6. Fitch, P. and Gargus, A.G., Amer. Lab. 17(12), 64 (1985).Google Scholar
7. Schirmer, R.E. and Gargus, A.G., Amer. Lab. 18(12), 30 (1986).Google Scholar
8. Leggett, D.J., in Computational Methods for the Determination of Formation Constants, edited by Leggett, D.J. (Plenum Press, New York, 1985), pp. 159–220.CrossRefGoogle Scholar
9. Davidenko, N.K., Goryushko, A.G., and Yatsimirskii, K.B., Russ. J. Inorg. Chem. 18, 943 (1973).Google Scholar