Hostname: page-component-8448b6f56d-sxzjt Total loading time: 0 Render date: 2024-04-20T04:29:39.498Z Has data issue: false hasContentIssue false
  • English
  • Français

Supercritical Fluid Phase Separations Induced by Chemical Reactions

Published online by Cambridge University Press:  10 February 2011

Francis H. Ree  and
James A. Viecelli
Francis H. Ree
Affiliation:
Mathias van Thiel Lawrence Livermore National Laboratory, Livermore, CA 94550
James A. Viecelli
Affiliation:
Mathias van Thiel Lawrence Livermore National Laboratory, Livermore, CA 94550
Get access

Abstract

Statistical mechanical studies predict that a chemically reactive system containing species composed of C, H, N, O atoms can exhibit a phase separation into a N2-rich and a N2-poor phase. The present work is concerned with the effect of the fluid phase separation upon addition of F atoms to the system. Our study shows that F atoms mainly appear as a constituent of HF in a N2-poor fluid phase up to a certain pressure beyond which they occur as CF4 in a N2-rich phase and that the phase separation may be abrupt in a thermodynamic sense. The pressure at the phase boundary can occur at about 30 GPa at 3000 K and about 10 GPa to 20 GPa at 1000 K. Some of these ranges may be accessible by present-day experimental high-pressure techniques. We discuss implications of this study to detonation physics.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 499: Symposium DD – High Pressure Materials Research , 1997 , 127
Copyright
Copyright © Materials Research Society 1998

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. Ree, F. H., J. Chem. Phys. 81, 1251 (1984); 84, 5845 (1986).Google Scholar
2. Costantino, M. and Rice, S. F., J. Phys. Chem. 95, 9034 (1991).Google Scholar
3. Ree, F. H. and Van Thiel, M., High Pressure Research 10, 607 (1992); also see references quoted therein.Google Scholar
4. Ree, F. H., J. Chem. Phys. 78, 409 (1983).Google Scholar
5. Ross, M., J. Chem. Phys. 71, 1567 (1979).Google Scholar
6. Ree, F. H. and Calef, D. F., in Shock Compression of Condensed Matter-1989, edited by Schmidt, S. C, Johnson, J. N., and Davison, L. W. (Elsevier Science, NY, 1990), p. 91.Google Scholar
7. Green, L., Lee, E., Mitchell, A., and Tarver, C., in Proc. Eighth Symposium (International) on Detonation, Albuquerque, NM July 1985, NSWC MP 86–194, (Naval Surface Weapons Center, White Oak, Silver Spring, MD 20903–5000, 1986) p. 587.Google Scholar