This article refers to the adsorption equilibrium of binary liquid hydrocarbon mixture, i.e. toluenen-hexane by silica gel or activated alumina, studied by means of the direct liquid contacting method. From the experimental data on the adsorption equilibrium were calculated the separation factor, α, in Eq. (1') and the volume of the liquid adsorbed by a gram of adsorbent or the volume of adsorbed phase, z, in Eq. (5).
The results obtained were as follows:
(1) z which was constant over the wide range of liquid concentration for each adsorbent was affected considerably by the preparation temperature.
(2) α, a characteristic constant for each adsorbent, i.e., 14 for silica gel and 7.3 for activated alumina, was not affected by the preparation temperature.
(3) x-y Diagrams calculated by using α in Eq. (1') was in good agreement with that calculated by using z in Eq. (4'), as shown in Fig. (6).