Effective Separation of Prime Olefins from Gas Stream Using Anion Pillared Metal Organic Frameworks: Ideal Adsorbed Solution Theory Studies, Cyclic Application and Stability

The separation of C3H4/C3H6 is one the most energy intensive and challenging operations, requiring up to 100 theoretical stages, in traditional cryogenic distillation. In this investigation, potential application two MOFs (SIFSIX-3-Ni NbOFFIVE-1-Ni) was tested by studying adsorption-desorption behaviors at a range operational temperatures (300–360 K) pressures (1–100 kPa). Dynamic adsorption breakthrough tests were conducted stability regeneration ability established after eight consecutive cycles. order establish engineering key parameters, experimental data fitted four isotherm models (Langmuir, Freundlich, Sips Toth) addition estimation thermodynamic properties such as isosteric heats adsorption. selectivity applying ideal adsorbed solution theory (IAST). results revealed that SIFSIX-3-Ni an effective adsorbent for 10/90 v/v under conditions used study. maximum reported same combination 3.2 mmol g?1. Breakthrough curves confirmed suitability material with 10-min gab before lighter C3H4 eluted from column. separated C3H6 obtained 99.98% purity.