Bubble point measurements for the ternary system carbon dioxide, benzene and naphthalene

Phase equilibria behavior of carbon dioxide-n-hexane-naphthalene ternary system

“…In addition, the solubility of carbon dioxide in a mixture of n-hexane-naphthalene is found to decrease with an increase in temperature. This behavior is consistent with our previous finding when the light com- ponent (carbon dioxide) liquid phase activity coefficients is less than 1, and a negative deviation from Raoult's law occur [4,8]. Fig.…”

“…It is observed that the P-x line of the ternary system lies above the P-x for the carbon dioxide-n-hexane system, meaning that adding more naphthalene will increase the bubble point pressure. This behavior is similar to that reported for CO 2 -cyclohexane-naphthalene and CO 2 -benzene-naphthalene at high pressures [3,4].…”

“…Fig. 4 shows that the bubble point pressure for CO 2 -bwnzene-naphthalene is higher than that for CO 2 -hexane-naphthalene at the same temperature and CO 2 mole fraction [4]. This is in agreement with the difference in volatility between benzene and hexane.…”

“…The experimental apparatus and procedures used in this work are similar to those previously described [3,4]. Fig.…”

“…Over the past few years we have concentrated our efforts in this area in an attempt to contribute to the limited data available. Two previous studies covered the ternary systems CO 2 -benzene-naphthalene and CO 2 -cyclohexane-naphthalene [3,4]. In this study, bubble point pressure data were measured for the ternary system CO 2 -n-hexane-naphthalene at three different temperatures, 40, 60 and 80 o C, at a fixed mole ratio of n-hexane to naphthalene of 9:1.…”