Mixed Matrix Membranes (MMMs) appear to be attractive candidates for gas separation 1,2. They have been recognized as an efficient separation tool, capitalizing on the high processability of polymers and the excellent separation efficiency of rigid molecular sieving substances. Nevertheless, current polymer-filler MMMs can hardly accomplish the functional requirements of new separation tasks, as the application of organic polymer materials in rigorous environment has been restricted by their poor thermal and chemical resistances. Particularly, there is an increasing research interest in using carbon molecular sieve membranes (CMSMs) for gas separation and purification, as they compete favorably with silica- and zeolite-based membranes. Despite their stability in aggressive (vapor or solvents, and non-oxidizing acids or bases) and adverse (high temperature and pressure operation) environments, carbon membranes can attain a high selectivity without loosing productivity after carbonization 3,4.
展开▼
