Modeling of Two Parameters Isotherm of CO2 and H2S Adsorption Using Metal Organic Frameworks (MOFs)

In this research, the adsorption potential of carbon dioxide and hydrogen sulfide storage in metal organic frameworks has been studied and modeled. Studying four different type of micro porous coordination polymer adsorbents metal organic frameworks including MOF-2 (Zn2 (BDC)2), MOF-74 (Zn2 (DHBDC)), IRMOF-1 (Zn4O (BDC)3) and MOF-177 (Zn4O (BTB)2) showed that the adsorbent have different structure caused different performance in gases adsorption. For adsorption isotherm modeling of these adsorbents used two parameters isotherm models. For calculation parameters of the models was used nonlinear regression technique. The results showed that the models have good agreements with experimental data. Hill model has high accuracy to compare with other models. The parameter values of D-R model for all adsorbents showed that the processes were physical adsorption and IRMOF-1 for H2S and MOF-74 and MOF-2 for CO2 adsorption were suitable.