Vapour-Liquid Equilibrium in Isoprene-Cyclopentadiene System with and without Solvent

Abstract

Vapour-liquid equilibrium in isoprene (I)-cyclopentadiene (C) system, with and without solvent and the effect of dicyclopentadiene (D) on this equilibrium were studied under 760 mmHg pressure. From the data obtained for I-C-D system, the following relationships were obtained.
log cx=0.1664-0.1894 XI+ 0.1062 X12
log (riirc)=0.0765-0.1894 Xi+ 0.1062 X12
l/t=0.0295 xi+ 0.0246 x0+0.0102 xD where a, r, t and xt are relative volatility, modified activity coefficient, boiling point (°) and mole fraction of component i in liquid phase, respectively. X is the calculated mole fraction, assuming the 'system as a pseudo-two-components (I-C) one.
These equations show that a is seemingly not affcted, by component D and that t is most sensitive for the change of xi.
The suitableness of N-methylpyrrolidone, dimethylformamide or 2-methoxy-ethanol for a solvent was tested and found that the above order was opposite to it. The appropriate content of water in the solvent was 15 wt%.