Adsorption Isotherms of Water, Propan-2-ol, and Methylbenzene Vapors on Grade 03 Silica Gel, Sorbonorit 4 Activated Carbon, and HiSiv 3000 Zeolite

Abstract

This work reports adsorption isotherms of water, propan-2-ol, and methylbenzene vapors on three commercial adsorbents: grade 03 silica gel, Sorbonorit 4 activated carbon, and HiSiv 3000 zeolite. The adsorption isotherms were measured at (293.15, 313.15, 333.15, 348.15, 373.15, 393.15, and 413.15) K and pressures up to 2340 Pa for water, 4460 Pa for propan-2-ol, and 2910 Pa for methylbenzene. Additionally measurements for the water vapor–Sorbonorit 4 system at (293.15, 303.15, 313.15, and 323.15) K and relative humidity up to 95% (at 323.15 K up to 70%) were made because of different type of adsorption isotherm. The measurements were carried out by intelligent gravimetric analyzer. The data obtained from measurements were correlated with selected multitemperature adsorption isotherms equations: Toth, Langmuir–Freundlich, and Dubinin–Astakhov.