Defect-free carbon molecular sieve membranes with enhanced selectivity and aging resistance and the method of making the same
inventor/creator：MA Canghai, Madhava Kosuri, Tao Li, Dean Kratzer, Raja Swaidan
Paten number/application number：US15/253,497
application/authorized announcemen date：2016/8/31
brief introduction：A method for making a defect-free carbon molecular sieve (CMS) fiber membrane with an enhanced selectivity and aging resistance includes the steps of fabricating the CMS fiber membrane by pyrolyzing a polymer precursor, coating a thin layer of the silicone rubber on the CMS fiber membrane with the silicone rubber solution and drying the coated CMS fiber membrane to remove the organic solvent. The silicone rubber may be a poly(siloxane) containing repeating units of the moiety of the following formula: