Please use this identifier to cite or link to this item:
|Title:||Enhanced propylene/propane separation by carbonaceous membrane derived from poly (aryl ether ketone)/2,6-bis(4-azidobenzylidene)-4-methyl-cyclohexanone interpenetrating network||Authors:||Chng, M.L.
|Issue Date:||Jun-2009||Citation:||Chng, M.L., Xiao, Y., Chung, T.-S., Toriida, M., Tamai, S. (2009-06). Enhanced propylene/propane separation by carbonaceous membrane derived from poly (aryl ether ketone)/2,6-bis(4-azidobenzylidene)-4-methyl-cyclohexanone interpenetrating network. Carbon 47 (7) : 1857-1866. ScholarBank@NUS Repository. https://doi.org/10.1016/j.carbon.2009.03.032||Abstract:||An innovative combination of a photosensitive crosslinker, 2,6-bis(4-azidobenzylidene)-4-methyl-cyclohexanone (Azide) with poly (aryl ether ketone) (PAEK) is utilized to form a semi-interpenetrating network (IPN) as the precursor for carbon membranes. Low temperature pyrolysis (450-650 °C) of this precursor produces carbon membranes with excellent olefin/paraffin separation performance that surpasses the conventional trade-off line. The carbon membranes have reasonably good flexibility since excessive closure of the micropores is avoided. This is evident from the mechanical properties of the carbon membranes obtained from nanoindention to the pore size distribution derived from CO2 adsorption. By varying the composition of Azide/PAEK and optimizing the low-temperature pyrolysis protocol, it was found that PAEK/Azide (80:20) pyrolysed at 550 °C exhibits the best propane/propylene separation performance with C3H6 permeability of 48 barrer and ideal C3H6/C3H8 selectivity of 44. Due to strong competitive sorption of propane and propylene molecules, the C3H6 permeability is lowered to 3.6 barrer and the C3H6/C3H8 selectivity to 32 in mixed gas experiments. However, this separation performance is still above the trade-off line. Even though both Azide and PAEK cannot form useful carbon membranes, their IPN is a unique precursor that can produce carbon membranes with comparable performance. © 2009 Elsevier Ltd. All rights reserved.||Source Title:||Carbon||URI:||http://scholarbank.nus.edu.sg/handle/10635/88855||ISSN:||00086223||DOI:||10.1016/j.carbon.2009.03.032|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Oct 24, 2020
WEB OF SCIENCETM
checked on Oct 16, 2020
checked on Oct 11, 2020
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.