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    Asymmetric Modified Carbon Molecular Sieve Hollow Fiber Membranes Having Improved Permeance

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    Date
    2017-11-14
    Author
    Bhuwania, Nitesh
    Koros, William John
    Williams, Paul Jason
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    Abstract
    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.
    URI
    http://hdl.handle.net/1853/59622
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