Vapor-liquid equilibrium in the system carbon dioxide + 2,2-dimethylpropane from 262 to 424 K at pressures to 8.4 MPa

Shah, Nilesh N.; Fernández, María Alejandra; Zollweg, John A.; Streett, William B.

doi:10.1021/je00061a015

Cited by 23 publications

(9 citation statements)

References 5 publications

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“…ethane, but the PCP-SAFT pure compound parameters suggest the opposite since m neo-pentane > m ethane . [21]. This 10% difference of the segment diameters, which appears to be an artefact due to unsatisfactory shape modeling, has a substantial non-ideality effect in our CRs.…”

Section: Systems Beyond Pcp-saftmentioning

confidence: 80%

Making equation of state models predictive

Leonhard

Nhu

Lucas

2007

Fluid Phase Equilibria

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Section: Systems Beyond Pcp-saftmentioning

confidence: 80%

Making equation of state models predictive

Leonhard

Nhu

Lucas

2007

Fluid Phase Equilibria

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“…The apparatus and the procedure used in this study are essentially the same as those used by Shah et al (3) and the studies mentioned in that paper. It is a vapor recirculation system designed for the measurement of liquid-and vaporphase compositions as a function of pressure at fixed temperature.…”

Section: Methodsmentioning

confidence: 99%

Vapor-liquid equilibrium in the system carbon dioxide + cyclopentane from 275 to 493 K at pressures to 12.2 MPa

Shah¹,

Zollweg²,

Streett³

1991

J. Chem. Eng. Data

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Isothermal vapor-liquid equilibrium data have been measured for the carbon dioxide + cyclopentane system at 15 temperatures from 276.64 to 493.11 K and at pressures to 12.2 MPa. The mixture critical line has been located and Is shown to be continuous In p-T-x space between the critical points of the pure components. The results are compared with the only other set of measurements on this system In the literature, which were made at temperatures below 333 K. The data sets are also correlated by using two cubic equations of state, the Soave-RedHch-Kwong and Peng-Robinson equations. Both equations provide phase compositions In good agreement with experiment except near the critical points of mixtures. Binary Interaction parameters for the system are reported for both equations of state over the entire temperature range.

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“…This systematic error in the measurements of Leu and Robinson can be seen especially clearly at the highest temperatures of their VLE data for mixtures of carbon dioxide with pentane isomers [ 34 , 35 ]. These mixtures have also been recently measured by the Cornell group; carbon dioxide with n -pentane [ 39 ], isopentane [ 40 ], and neopentane [ 41 ]. Though these mixtures are more difficult to correlate because the dissimilarity of the components is greater, we have developed quality correlations in P-T-x space for these three mixtures [ 10 ].…”

Section: Carbon Dioxide + N -Butanementioning

confidence: 99%

Vapor-liquid equilibrium of carbon dioxide with isobutane and n-butane: Modified leung-griffiths correlation and data evaluation

Rainwater

Ingham

Lynch

1990

J. RES. NATL. INST. STAN.

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The Leung-Griffiths model as modified by Moldover and Rainwater is used to correlate high-pressure vapor-liquid equilibria of mixtures of carbon dioxide with n-butane and isobutane. Model correlations are compared against 10 independent experimental sources for these mixtures. Agreement is generally very good and comparable to mutual experimental discrepancies. The utility of the model as a data evaluation technique is demonstrated in that small suspect regions have been identified in certain data sets and the model predictions have been confirmed by subsequent measurements that agree with the model better than the earlier data.

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Vapor-liquid equilibrium in the system carbon dioxide + 2,2-dimethylpropane from 262 to 424 K at pressures to 8.4 MPa

Cited by 23 publications

References 5 publications

Making equation of state models predictive

Making equation of state models predictive

Vapor-liquid equilibrium in the system carbon dioxide + cyclopentane from 275 to 493 K at pressures to 12.2 MPa

Vapor-liquid equilibrium of carbon dioxide with isobutane and n-butane: Modified leung-griffiths correlation and data evaluation

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