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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.
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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

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References

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