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Coal and the Moessbauer Effect*

Published online by Cambridge University Press:  15 February 2011

Pedro A. Montano
Pedro A. Montano*
Affiliation:
Department of Physics, West Virginia University, Morgantown, West Virginia 26506
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Abstract

The presence of iron bearing minerals in coal makes the Moessbauer effect extremely useful as an analytical tool. In this paper we present a general review of the use of Moessbauer spectroscopy in coal research. We discuss a simple method to identify iron bearing minerals in coal. Several researchers have used the Moessbauer effect to study the transformations of iron minerals during coal processing. We have studied the stoichiometries of iron sulfides produced during coal liquefaction. We found drastic changes in the stoichiometry of the pyrrhotites as a function of the total sulfur content of the coal, and the reaction conditions. Some in situ experiments are reported in this paper. We have observed evidence of reactions between the coal components and the iron sulfides at high temperatures (400° C). The possibility of studying in situ reactions makes the Moessbauer effect a unique analytical tool.

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Footnotes

*

Work supported by U.S. Department of Energy and Energy Research Center of West Virginia University.

References

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