Mixed matrix membranes for gas separations: A review

Goal of environment protection is improving claims or human's health, while during the process, here are important signals such as "carbon neutral" and "carbon peak". The development of CO2 capture and separation technology is imperative. Membrane separation technology is widely used in industry because of its obvious advantages in gas separation. According to the different membrane materials, CO2 separation membranes can be categorized into liquid membranes, polymer membranes, inorganic membranes and mixed matrix membranes. At present, mixed matrix membrane separation technology has become an efficient gas separation technology. mixed matrix membranes combine the excellent separation properties of inorganic fillers and the good film-forming properties of polymers, solving the problems commonly found in polymer and inorganic membranes and becoming the next generation of separation membranes with potential. Focusing on membrane materials, this paper introduces several common methods for preparing mixed matrix membranes from the membrane separation mechanism, focusing on various fillers for mixed matrix membranes and their research progress in the field of gas separation. Then, the factors affecting the performance of mixed matrix membranes and their solutions are analyzed. Finally, the challenges and future development direction of mixed matrix membranes in the field of gas separation are prospected. This review provides a theoretical guide to the field of carbon dioxide capture and gas separation technology in the future through methods such as comprehensive and integrated analysis of literature.