2021 Volume 64 Issue 2 Pages 92-102
Boiling point and bubble point pressure in binaries with propane were measured for five compounds, 1-pentyne, cyclopentene, 1-hexyne, 2-hexyne, and 1,5-cyclooctadiene, new sulfur-free odorants for liquefied petroleum gas. The boiling point was measured with an ebulliometer under atmospheric pressure. The experimental boiling points were 313.51, 313.76, 344.53, 357.59 and 424.02 K for 1-pentyne, cyclopentene, 1-hexyne, 2-hexyne, and 1,5-cyclooctadiene, respectively. The bubble point pressures were measured with a static apparatus at 303.15 K. The pressure was also measured by a synthetic apparatus at 303.15 K for propane–1-hexyne. The experimental boiling points were used for estimation of critical temperature, critical pressure and acentric factor by Lydersen’s group contribution method to evaluate the two constants in the Peng-Robinson equation of state. The Peng-Robinson equation could correlate the bubble point pressure to the mole fraction of propane with absolute relative deviation of less than 2.556 %. The data will be useful in the development of fuel cells with reformers for liquefied petroleum gas.
