Solvent Selectivity for Hydrocarbons with Close Molar Volumes

Abstract

Solvent selectivity for hydrocarbons of very close molar volumes has been investigated. Binary isothermal (90°C) vapor-liquid equilibrium data for n-octane and isooctane were obtained in nitrobenzene, butyronitrile, cyclopentanone, and diethyl oxalate. Literature dat.a for three other solvents were also utilized. It is concluded that in spite of the close molar volumes, the main contributions to selectivity result from physical effects, especially dispersion forces. Furthermore, an increase of the solubility parameter for isooctane by 0.7 is required for successful correlation of the results.

Bubble point temperatures of the binary mixtures of nitrobenzene with C1–C4 aliphatic alcohols at 94.95kPa

“…This investigation on the bubble point temperatures of the binary mixtures noted in the abstract is a continuation of our recent studies on the phase equilibria of the binary mixtures containing hydrocarbons and alcohols [1,2]. Hollzander and Riggle [3] studied the (vapor + liquid) equilibria at 5 and 10 mmHg for the (aniline + nitrobenzene) system while Spelying and Tassios [4] presented the (vapor + liquid) equilibrium data at 90°C the binary mixtures formed by nitrobenzene with n-and iso-octane. Our group [5] investigated the binary mixtures formed by nitrobenzene with 1,2-dichloroethane, 1,1,1-trichloroethane, 1,1,2,2-tetrachloroethane, trichloroethylene, and tetrachloroethylene at 94.6 kPa.…”