Study of Applicability of MOF ZrBDC-NH2 for the Direct Carbon Dioxide Capture Process

The present work focuses on the results of the study of adsorption of carbon dioxide and nitrogen onto the synthesized metal-organic framework polymer (MOF) ZrBDC-NH2. The isotherms were recorded at temperatures of 243, 273, 293, and 333 K within the pressure range of 0 to 120 kPa. The isotherms of individual gas adsorption were calculated using the Dubinin–Radushkevich (D–R) equation within the framework of the theory of volume filling of micropores (TVFM). The IAST method was used to predict the adsorption of the binary CO2/N2 mixture with the gas component ratio of 0.04/99.96 vol %. The differential molar isosteric heat of CO2 adsorption and the separation coefficients were evaluated. The applicability of ZrBDC-NH2 MOF for the direct adsorption removal of carbon dioxide from the air was assessed.