Abstract
A new equilibrium cell suitable for measurement of high-pressure vapour—liquid equilibria in systems containing components differing considerably in boiling points was constructed. Vapour—liquid equilibrium was measured in the carbon dioxide - 1-hexene - n-hexane ternary system and the two carbon dioxide binary subsystems. Measurements were carried out isothermally at temperatures 303.15 K, 313.15 K, and 323.15 K and pressures from 2 MPa to near the critical pressure (9 MPa maximum). Experimental data on the binary systems were correlated using the Soave-Redlich-Kwong and Peng-Robinson equations of state, and the reliability of calculations of vapour—liquid equilibrium in the ternary system was checked.
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