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Isothermal vapor-liquid equilibrium data for the binary cyclooctane + butylbenzene and n-heptane + cyclooctane at temperatures from 343.15 K to 393.15 K

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Autori: Teodorescu M., Barhala A., Landauer O.

Editorial: ELDATA: Int. Electron. J. Phys.-Chem. Data, 2, p.169-174, 1996.


Isothermal P-x-y vapor-liquid equilibrium data are reported at 373.15, 383.15, and 393.15 K for cyclooctane + butylbenzene and at 343.15 and 353.15 K for heptane + cyclooctane mixtures. The data were correlated using the Redlich-Kister equation taking into account the vapor phase imperfection in terms of the 2nd virial coefficients. The calculated equimolar excess Gibbs energy of cyclooctane + butylbenzene is of the order of 180 J mol-1 at 373.15 K and decreases with increasing temperature. The calculated equimolar excess Gibbs energy of heptane + cyclooctane is of the order of 142 J mol-1 at temperatures between 343.15 and 353.15 K.

Cuvinte cheie: vapour-liquid equilibria, cyclooctane, butylbenzene, heptane, experimental, correlation