Preparation and modification of carbon molecular sieve membranes

Carbon molecular sieve membrane is a high-performance and new type of gas separation membrane,which has been developed well in recent years.It has good gas separation selectivity and high thermal and chemical stability,but the separation and gas flux cannot meet the high demands at the same time.The development of carbon membranes in recent years is reviewed and the chemical and physical methods of modifying the precursor of carbon membrane are discussed in this paper.The direction of developing in the future for the carbon membranes is pointed out.