Abstract
Mixed-matrix membranes (MMMs) exhibit both high permeability and selectivity, with the potential to surpass the Robeson upper bound, and are therefore a major focus of research on gas separation membranes. In this review, the basic assumptions and limitations of the widely used resistance model approach (RMA) for predicting the permeability of MMMs are discussed. Additionally, the practical application of the RMA in optimizing membrane structure design is introduced. By comparing prediction results with experimental data, the applicability of these models in predicting the permeability of MMMs is revealed. Finally, future development directions for the model are proposed. This review aims to provide a theoretical foundation and guidance for the design and optimization of high-performance gas separation membrane materials.