A modified multi-site occupancy model: evaluation of azeotropelike behavior in adsorption

摘要: Even though a large number of statistical-mechanics models can be found in the literature to describe adsorption, no one is good enough reliably predict some highly non-ideal behavior, such as inversion selectivity presented adsorption mixtures. This probably due natural complexity phenomena, which attributed several factors non-uniformity solids and intermolecular forces between adsorbent-adsorbate adsorbate–adsorbate. In order contribute improvement models, this paper presents study impact relative molecule sizes lateral interactions for azeotropelike behavior adsorption. Therefore, we present here modified model based on Nitta et al. (1984) Multi-Site Occupancy Model (MSOM). The ability proposed binary ternary mixtures was compared obtained from original by Vacancy Solution (VSM, Suwanayuen Danner 1980a, b). results showed that size molecules (adsorbate–adsorbate) are very important variables description behavior. MSOM requires fewer parameters pure isotherm data, VSM, it better performance both able majority studied here.