Henry's Constants of Gases in Methanol at High Temperatures up to the Critical Point of Methanol

Abstract

Henry’s constants of propane, isobutane, 1-butene and trans-2-butene in methanol in the temperature range of 350 K to 500 K are experimentally obtained. The Henry’s constants at low temperatures were measured by a gas stripping method, and a similar method is applied to measure the Henry’s constants at high temperatures up to the critical point of methanol. The rigorous formula for evaluating the Henry’s constants from these measurements is applied to the data reduction for these highly volatile mixtures. The plot of Henry’s constants versus temperature goes through a maximum and approaches a unique point at the critical temperature of methanol.