• Login
    View Item 
    •   Home
    • Research
    • Articles
    • View Item
    •   Home
    • Research
    • Articles
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    All of KAUSTCommunitiesIssue DateSubmit DateThis CollectionIssue DateSubmit Date

    My Account

    Login

    Quick Links

    Open Access PolicyORCID LibguideTheses and Dissertations LibguideSubmit an Item

    Statistics

    Display statistics

    Ultra-selective carbon molecular sieve membranes for natural gas separations based on a carbon-rich intrinsically microporous polyimide precursor

    • CSV
    • RefMan
    • EndNote
    • BibTex
    • RefWorks
    Thumbnail
    Name:
    1-s2.0-S0376738819307070-main.pdf
    Size:
    3.382Mb
    Format:
    PDF
    Description:
    Accepted Manuscript
    Download
    Thumbnail
    Name:
    1-s2.0-S0376738819307070-mmc2.docx
    Size:
    1.407Mb
    Format:
    Microsoft Word 2007
    Description:
    Supplemental files
    Download
    Thumbnail
    Name:
    1-s2.0-S0376738819307070-fx1.jpg
    Size:
    45.05Kb
    Format:
    JPEG image
    Description:
    Graphical abstract
    Image viewer
    Download
    Type
    Article
    Authors
    Hazazi, Khalid cc
    Ma, Xiaohua
    Wang, Yingge
    Ogieglo, Wojciech
    Alhazmi, Abdulrahman cc
    Han, Yu cc
    Pinnau, Ingo cc
    KAUST Department
    Advanced Membranes and Porous Materials Research Center
    Biological and Environmental Sciences and Engineering (BESE) Division
    Chemical Engineering Program
    Chemical Science Program
    Functional Polymer Membranes Group, Thuwal, 23955, Saudi Arabia
    Nanostructured Functional Materials (NFM) laboratory
    Physical Science and Engineering (PSE) Division
    KAUST Grant Number
    BAS/1/13223-01-01
    Date
    2019-05-10
    Online Publication Date
    2019-05-10
    Print Publication Date
    2019-09
    Permanent link to this record
    http://hdl.handle.net/10754/652881
    
    Metadata
    Show full item record
    Abstract
    A highly contorted, carbon-rich intrinsically microporous polyimide (PIM-PI) made from spirobifluorene dianhydride and 3,3-dimethylnaphthidine (SBFDA-DMN) was employed as a precursor for the formation of carbon molecular sieve (CMS) membranes at pyrolysis temperatures from 550 to 1000 °C. The high carbon content of SBFDA-DMN (∼84%) resulted in only 28% total weight loss during pyrolysis under a nitrogen atmosphere at 1000 °C. The development of the various microstructural textures was characterized by gas sorption analysis, Brunauer-Emmett-Teller (BET) surface area, X-ray diffraction, Raman spectroscopy, electrical conductivity, and gas transport properties. Heat treatment of a pristine SBFDA-DMN membrane at 550 °C resulted in reduced permeability for all gases (e.g.: PCO2 dropped from 4700 to 1500 barrer) as well as lower BET surface area from 621 to 545 m2 g−1. At 600 °C, new pores induced by pyrolysis increased the BET surface area to nearly that of the precursor and significantly improved gas separation performance. Above 600 °C, a progressive collapse of the micropores became evident with CMS membranes showing higher gas-pair selectivity but lower permeability. At 1000 °C, ultra-micropores comparable in size with the kinetic diameter of CH4 emerged and induced a prominent molecular sieving effect resulting in very high CH4 rejection. This strong size exclusion effect, further supported by gravimetric gas sorption measurements, resulted in unusually high N2/CH4 and CO2/CH4 selectivities of 35 and 1475, respectively.
    Citation
    Hazazi K, Ma X, Wang Y, Ogieglo W, Alhazmi A, et al. (2019) Ultra-selective carbon molecular sieve membranes for natural gas separations based on a carbon-rich intrinsically microporous polyimide precursor. Journal of Membrane Science. Available: http://dx.doi.org/10.1016/j.memsci.2019.05.020.
    Sponsors
    This research was supported by funding (BAS/1/13223-01-01) from King Abdullah University of Science and Technology.
    Publisher
    Elsevier BV
    Journal
    Journal of Membrane Science
    DOI
    10.1016/j.memsci.2019.05.020
    Additional Links
    https://www.sciencedirect.com/science/article/pii/S0376738819307070
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.memsci.2019.05.020
    Scopus Count
    Collections
    Articles; Biological and Environmental Science and Engineering (BESE) Division; Advanced Membranes and Porous Materials Research Center; Physical Science and Engineering (PSE) Division; Chemical Science Program; Chemical Engineering Program

    entitlement

     
    DSpace software copyright © 2002-2023  DuraSpace
    Quick Guide | Contact Us | KAUST University Library
    Open Repository is a service hosted by 
    Atmire NV
     

    Export search results

    The export option will allow you to export the current search results of the entered query to a file. Different formats are available for download. To export the items, click on the button corresponding with the preferred download format.

    By default, clicking on the export buttons will result in a download of the allowed maximum amount of items. For anonymous users the allowed maximum amount is 50 search results.

    To select a subset of the search results, click "Selective Export" button and make a selection of the items you want to export. The amount of items that can be exported at once is similarly restricted as the full export.

    After making a selection, click one of the export format buttons. The amount of items that will be exported is indicated in the bubble next to export format.