Issues and Current Trends of Hollow‐Fiber Mixed‐Matrix Membranes for CO2Separation from N2and CH4

To control CO2emission from industries, membrane technology is preferred over conventional technologies due to its numerous advantages including reliability, operational simplicity, and low capital cost. Hollow‐fiber mixed‐matrix membranes (HFMMMs) exhibit great potential for CO2separation. Various inorganic fillers were incorporated into different types of polymeric materials for fabrication of HFMMMs. This review focuses on the performance and issues of HFMMMS based on various materials for CO2/CH4and CO2/N2separation. Major features are reflected in the following three aspects: comprehensive study on the performance of HFMMMs for CO2/N2and CO2/CH4separation, issues with the fabrication of HFMMMs in CO2/N2and CO2/CH4separation, and prediction of transport models for HFMMMs in gas separation.