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Excess molar enthalpies of (carbon dioxide  +  ethene) in the liquid and near-critical regions

✍ Scribed by C.J. Wormald; J.M. Eyears

Publisher
Elsevier Science
Year
2001
Tongue
English
Weight
263 KB
Volume
33
Category
Article
ISSN
0021-9614

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✦ Synopsis

Flow calorimetric measurements of the excess molar enthalpy H E m for {xCO 2 + (1 -x) C 2 H 4 } are described. The measurements cover the range T = 260.95 K to T = 315.75 K at pressures from 3.5 MPa to 12.6 MPa. Liquid phase measurements were made at the pressure 11.0 MPa over the range T = 260.95 to T = 300.45 K, and at pressures slightly greater than the saturation pressure of ethene or the critical pressure locus for the mixture. At x = 0.5 and at the four temperatures (285.85, 300.45, 306.25, and 315.75) K, excess enthalpy measurements were made over a range of pressures from 3.0 MPa to 12.6 MPa. The measurements at (285.85 and 300.45) K traverse the critical locus for the mixture, and those at (306.25 and 315.75) K are in the supercritical region. The measurements are compared with curves generated from the Patel-Teja equation of state, which does not quite fit the measurements but reproduces the main features of the observed behaviour.

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