A compensated-Redlich-Kwong (CORK) equation for volumes and fugacities of CO2 and H2O in the range 1 bar to 50 kbar and 100-1600 C

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Authors:Holland, Tim; Powell, Roger
Author Affiliations:Primary:
Univ. Cambridge, Dep. Earth Sci., Cambridge, United Kingdom
Volume Title:Contributions to Mineralogy and Petrology
Source:Contributions to Mineralogy and Petrology, 109(2), p.265-273. Publisher: Springer International, Heidelberg-New York, International. ISSN: 0010-7999
Publication Date:1991
Note:In English. 32 refs.; illus. incl. 2 tables
Summary:The authors present a simple virial-type extension to the modified Redlich-Kwong (MRK) equation for calculation of the volumes and fugacities of H2O and CO2 over the P range 0.001-50 kbar and 100-1400 degrees C (H2O) and 100-1600 degrees C (CO2). This extension has been designed: 1) to compensate for the tendency of the MRK equation to overestimate volumes at high P, and 2) to accommodate the volume behaviour of coexisting gas and liquid phases along the saturation curve. The equation developed for CO2 may be used to derive volumes and fugacities of CO, H2, CH4, N2, O2, and other gases which conform to the corresponding states principle. For H2O the measured volumes of Burnham et al. [Thermodynamic properties of water to 1000 degrees C and 10000 bars. Geol. Soc. Am. Spec. Pap., 132, 1969] are significantly higher in the range 4-10 kbar than those presented by other workers. For CO2 the volume behaviour at high P derived from published MRK equations are very different (larger volumes, steeper (deltaP/deltaT)v, and hence larger fugacities) from the virial-type equations of Saxena & Fei. [Authors' abstract] [P.Br.]
Subjects:Carbon dioxide; Equations; Fugacity; High pressure; High temperature; Pressure; Temperature; Thermodynamic properties; Volume; Water
Abstract Numbers:92M/2843
Record ID:1993004830
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom, Reference includes data from Geoline, Bundesanstalt fur Geowissenschaften und Rohstoffe
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