Synthesis of Bio-Metal Organic Framework-11 Based Mixed Matrix Membrane for Efficient Carbon Dioxide Separation

Abstract

Mixed matrix membranes are thought to have the ability to separate gases. The current research investigates the isolation of CO2 from methane (CH4) and nitrogen (N2) using a mixed matrix membrane. Bio-MOF-11 was combined with polyether sulfone to establish a membrane (PES). Experiments were carried out to determine the efficiency of the established membrane. Results showed that the Lewis basic sites present in Bio-MOF-11, which have a higher affinity for CO2, increase the permeability and selectivity of pristine polyether sulfone. At 30% filler loading, CO2 permeability improved from 2.20 to 3.90 Barrer, while CO2/CH4 and CO2/N2 selectivity improved from 9.57 to 11.14 with 30% filler loading. In addition, at 30% filler loading, CO2 solubility drops from 1.57 to 1.20.