Effect of processing on carbon molecular sieve structure and performance

Handle URI:
http://hdl.handle.net/10754/598057
Title:
Effect of processing on carbon molecular sieve structure and performance
Authors:
Das, Mita; Perry, John D.; Koros, William J.
Abstract:
Sub-micron sized carbon molecular sieve (CMS) materials were produced via ball milling for subsequent use in hybrid material formation. A detailed analysis of the effects of the milling process in the presence of different milling environments is reported. The milling process apparently alters the molecular scale structure and properties of the carbon material. Three cases: unmilled, air milled and nitrogen milled, were analyzed in this work. The property changes were probed using equilibrium sorption experiments with different gases. Furthermore, WAXD and BET results also showed differences between milling processes. Finally in order to improve the interfacial polymer-sieve region of hybrid membranes, the CMS surface was chemically modified with a linkage unit capable of covalently bonding the polymer to the sieve. A published single-wall carbon nanotube (SWCNTs) modification method was adopted to attach a primary aromatic amine to the surface. Several aspects including rigidity, chemical composition, bulky groups and length were considered in selecting the preferred linkage unit. Fortunately kinetic and equilibrium sorption properties of the modified sieves showed very little difference from unmodified samples, suggesting that the linkage unit is not excessively filling or obstructing access to the pores of the CMSs during the modification process. © 2010 Elsevier Ltd. All rights reserved.
Citation:
Das M, Perry JD, Koros WJ (2010) Effect of processing on carbon molecular sieve structure and performance. Carbon 48: 3737–3749. Available: http://dx.doi.org/10.1016/j.carbon.2010.06.036.
Publisher:
Elsevier BV
Journal:
Carbon
KAUST Grant Number:
KUS-I1-011-21
Issue Date:
Nov-2010
DOI:
10.1016/j.carbon.2010.06.036
Type:
Article
ISSN:
0008-6223
Sponsors:
This publication was based on work supported in part by Award No. KUS-I1-011-21 made by King Abdullah University of Science and Technology (KAUST) and NSF-STC.
Appears in Collections:
Publications Acknowledging KAUST Support

Full metadata record

DC FieldValue Language
dc.contributor.authorDas, Mitaen
dc.contributor.authorPerry, John D.en
dc.contributor.authorKoros, William J.en
dc.date.accessioned2016-02-25T13:11:51Zen
dc.date.available2016-02-25T13:11:51Zen
dc.date.issued2010-11en
dc.identifier.citationDas M, Perry JD, Koros WJ (2010) Effect of processing on carbon molecular sieve structure and performance. Carbon 48: 3737–3749. Available: http://dx.doi.org/10.1016/j.carbon.2010.06.036.en
dc.identifier.issn0008-6223en
dc.identifier.doi10.1016/j.carbon.2010.06.036en
dc.identifier.urihttp://hdl.handle.net/10754/598057en
dc.description.abstractSub-micron sized carbon molecular sieve (CMS) materials were produced via ball milling for subsequent use in hybrid material formation. A detailed analysis of the effects of the milling process in the presence of different milling environments is reported. The milling process apparently alters the molecular scale structure and properties of the carbon material. Three cases: unmilled, air milled and nitrogen milled, were analyzed in this work. The property changes were probed using equilibrium sorption experiments with different gases. Furthermore, WAXD and BET results also showed differences between milling processes. Finally in order to improve the interfacial polymer-sieve region of hybrid membranes, the CMS surface was chemically modified with a linkage unit capable of covalently bonding the polymer to the sieve. A published single-wall carbon nanotube (SWCNTs) modification method was adopted to attach a primary aromatic amine to the surface. Several aspects including rigidity, chemical composition, bulky groups and length were considered in selecting the preferred linkage unit. Fortunately kinetic and equilibrium sorption properties of the modified sieves showed very little difference from unmodified samples, suggesting that the linkage unit is not excessively filling or obstructing access to the pores of the CMSs during the modification process. © 2010 Elsevier Ltd. All rights reserved.en
dc.description.sponsorshipThis publication was based on work supported in part by Award No. KUS-I1-011-21 made by King Abdullah University of Science and Technology (KAUST) and NSF-STC.en
dc.publisherElsevier BVen
dc.titleEffect of processing on carbon molecular sieve structure and performanceen
dc.typeArticleen
dc.identifier.journalCarbonen
dc.contributor.institutionGeorgia Institute of Technology, Atlanta, United Statesen
kaust.grant.numberKUS-I1-011-21en
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