Asymmetric Modified Carbon Molecular Sieve Hollow Fiber Membranes Having Improved Permeance

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Date
2017-11-14Author
Bhuwania, Nitesh
Koros, William John
Williams, Paul Jason
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The present invention provides an asymmetric modified CMS hollow fiber membrane having improved gas separation performance properties and a process for preparing an asymmetric modified CMS hollow fiber membrane having improved gas separation performance properties. The process comprises treating a polymeric precursor fiber with a solution containing a modifying agent prior to pyrolysis. The concentration of the modifying agent in the solution may be selected in order to obtain an asymmetric modified CMS hollow fiber membrane having a desired combination of gas permeance and selectivity properties. The treated precursor fiber is then pyrolyzed to form an asymmetric modified CMS hollow fiber membrane having improved gas permeance.
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- Georgia Tech Patents [1761]