Integrated metal organic framework/ionic liquid-based composite membrane for CO2 separation
Megawati Zunita, Willy Natola O, Michael David, Graecia Lugito
Abstract
Incorporations of ionic liquid (IL) to increase the compatibility and defect-free interface between metal-organic framework (MOF) and polymeric membrane have brought membrane-based gas separation technology to another level. The addition of tailormade MOF/IL composite increases the affinity of a membrane towards the selected gas as well as generates free pores that improve the gas diffusion. This review records various possible types of membranes with various combinations of MOF/IL pair composites for CO2 gas separation technology including their gas solubilities, interactions, synthesis methods, characteristics, and separation performances. Separation performances data are presented on upper bound plots. The role of MOF and IL coping with the trade-off between permeability and selectivity of CO2 through gas separation membranes has been analyzed.