Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.carbon.2004.07.026
Title: Separation of CO2/CH4 through carbon molecular sieve membranes derived from P84 polyimide
Authors: Tin, P.S. 
Chung, T.-S. 
Liu, Y.
Wang, R.
Keywords: A. Carbon films
Molecular sieves
Porous carbon; B. Pyrolysis
Issue Date: 2004
Citation: Tin, P.S., Chung, T.-S., Liu, Y., Wang, R. (2004). Separation of CO2/CH4 through carbon molecular sieve membranes derived from P84 polyimide. Carbon 42 (15) : 3123-3131. ScholarBank@NUS Repository. https://doi.org/10.1016/j.carbon.2004.07.026
Abstract: The separation of CO2/CH4 separation is industrially important especially for natural gas processing. In the past decades, polymeric membranes separation technology has been widely adopted for CO 2/CH4 separation. However, polymeric membranes are suffering from plasticization by condensable CO2 molecules. Thus, carbon molecular sieve membranes (CMSMs) with excellent separation performance and stability appear to be a promising candidate for CO2/CH 4 separation. A commercially available polyimide, P84 has been chosen as a precursor in preparing carbon membranes for this study. P84 displays a very high selectivity among the polyimides. The carbonization process was carried out at 550-800 °C under vacuum environment. WAXD and density measurements were performed to characterize the morphology of carbon membranes. The permeation properties of single and equimolar binary gas mixture through carbon membranes were measured and analyzed. The highest selectivity was attained by carbon membranes pyrolyzed at 800 °C, where the pyrolysis temperatures significantly affected the permeation properties of carbon membranes. A comparison of permeation properties among carbon membranes derived from four commercially available polyimides showed that the P84 carbon membranes exhibited the highest separation efficiency for CO2/CH4 separation. The pure gas measurement underestimated the separation efficiency of carbon membranes, due to the restricted diffusion of non-adsorbable gas by adsorbable component in binary mixture. © 2004 Elsevier Ltd. All rights reserved.
Source Title: Carbon
URI: http://scholarbank.nus.edu.sg/handle/10635/90131
ISSN: 00086223
DOI: 10.1016/j.carbon.2004.07.026
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

96
checked on Jul 14, 2018

WEB OF SCIENCETM
Citations

87
checked on Jun 19, 2018

Page view(s)

50
checked on May 4, 2018

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.