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Author Shmonov, V. M. ♦ Sadus, R. J. ♦ Franck, E. U.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword NATURAL GAS ♦ INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY ♦ BINARY MIXTURES ♦ PHASE STUDIES ♦ METHANE ♦ WATER ♦ AUTOCLAVES ♦ PHYSICAL CHEMISTRY ♦ PRESSURE DEPENDENCE ♦ TEMPERATURE DEPENDENCE ♦ ALKANES ♦ CHEMISTRY ♦ DISPERSIONS ♦ HYDROCARBONS ♦ HYDROGEN COMPOUNDS ♦ MIXTURES ♦ ORGANIC COMPOUNDS ♦ OXYGEN COMPOUNDS 033000* -- Natural Gas-- Properties & Composition ♦ Chemical & Physicochemical Properties
Abstract The phase equilibria of the binary methane + water mixture are examined at high temperatures and pressures. The experimental molar volumes are reported at temperatures of 653, 673, and 723 K and at pressures from 10 to 200 MPa. Reevaluated data for the critical curve and some binodal coexistence isotherms are reported. The critical curve commences from the critical point of water and rises steeply to high pressures after passing through a temperature minimum. The experimental molar volume and critical points are compared with the values predicted using equations of state. Reasonable agreement between theory and experiment is obtained for the critical pressure-temperature behavior by using only two adjustable parameters. Good agreement is obtained for the analysis of the critical pressure-composition data. Except for calculations at pressures and temperatures in the proximity of the critical point of water, the predicted molar volumes are also in reasonable agreement with experiment. 39 refs., 6 figs., 3 tabs.
ISSN 00223654
Educational Use Research
Learning Resource Type Article
Publisher Date 1993-09-02
Publisher Place United States
Journal Journal of Physical Chemistry
Volume Number 97
Issue Number 35


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