Carbon molecular sieve gas separation membranes based on an intrinsically microporous polyimide precursor

Handle URI:
http://hdl.handle.net/10754/562993
Title:
Carbon molecular sieve gas separation membranes based on an intrinsically microporous polyimide precursor
Authors:
Ma, Xiaohua; Swaidan, Raja ( 0000-0002-9296-6501 ) ; Teng, Baiyang; Tan, Hua; Salinas, Octavio ( 0000-0003-0653-660X ) ; Litwiller, Eric ( 0000-0001-5366-0967 ) ; Han, Yu ( 0000-0003-1462-1118 ) ; Pinnau, Ingo ( 0000-0003-3040-9088 )
Abstract:
We report the physical characteristics and gas transport properties for a series of pyrolyzed membranes derived from an intrinsically microporous polyimide containing spiro-centers (PIM-6FDA-OH) by step-wise heat treatment to 440, 530, 600, 630 and 800 C, respectively. At 440 C, the PIM-6FDA-OH was converted to a polybenzoxazole and exhibited a 3-fold increase in CO2 permeability (from 251 to 683 Barrer) with a 50% reduction in selectivity over CH4 (from 28 to 14). At 530 C, a distinct intermediate amorphous carbon structure with superior gas separation properties was formed. A 56% increase in CO2-probed surface area accompanied a 16-fold increase in CO2 permeability (4110 Barrer) over the pristine polymer. The graphitic carbon membrane, obtained by heat treatment at 600 C, exhibited excellent gas separation properties, including a remarkable CO2 permeability of 5040 Barrer with a high selectivity over CH4 of 38. Above 600 C, the strong emergence of ultramicroporosity (<7 Å) as evidenced by WAXD and CO2 adsorption studies elicits a prominent molecular sieving effect, yielding gas separation performance well above the permeability-selectivity trade-off curves of polymeric membranes. © 2013 Elsevier Ltd. All rights reserved.
KAUST Department:
Advanced Membranes and Porous Materials Research Center; Physical Sciences and Engineering (PSE) Division; Chemical Science Program; Chemical and Biological Engineering Program; Computational Bioscience Research Center (CBRC); Nanostructured Functional Materials (NFM) laboratory
Publisher:
Elsevier BV
Journal:
Carbon
Issue Date:
Oct-2013
DOI:
10.1016/j.carbon.2013.05.057
Type:
Article
ISSN:
00086223
Sponsors:
This research was supported by King Abdullah University of Science and Technology baseline funding for Yu Han and Ingo Pinnau.
Appears in Collections:
Articles; Advanced Membranes and Porous Materials Research Center; Physical Sciences and Engineering (PSE) Division; Chemical Science Program; Chemical and Biological Engineering Program; Computational Bioscience Research Center (CBRC)

Full metadata record

DC FieldValue Language
dc.contributor.authorMa, Xiaohuaen
dc.contributor.authorSwaidan, Rajaen
dc.contributor.authorTeng, Baiyangen
dc.contributor.authorTan, Huaen
dc.contributor.authorSalinas, Octavioen
dc.contributor.authorLitwiller, Ericen
dc.contributor.authorHan, Yuen
dc.contributor.authorPinnau, Ingoen
dc.date.accessioned2015-08-03T11:18:27Zen
dc.date.available2015-08-03T11:18:27Zen
dc.date.issued2013-10en
dc.identifier.issn00086223en
dc.identifier.doi10.1016/j.carbon.2013.05.057en
dc.identifier.urihttp://hdl.handle.net/10754/562993en
dc.description.abstractWe report the physical characteristics and gas transport properties for a series of pyrolyzed membranes derived from an intrinsically microporous polyimide containing spiro-centers (PIM-6FDA-OH) by step-wise heat treatment to 440, 530, 600, 630 and 800 C, respectively. At 440 C, the PIM-6FDA-OH was converted to a polybenzoxazole and exhibited a 3-fold increase in CO2 permeability (from 251 to 683 Barrer) with a 50% reduction in selectivity over CH4 (from 28 to 14). At 530 C, a distinct intermediate amorphous carbon structure with superior gas separation properties was formed. A 56% increase in CO2-probed surface area accompanied a 16-fold increase in CO2 permeability (4110 Barrer) over the pristine polymer. The graphitic carbon membrane, obtained by heat treatment at 600 C, exhibited excellent gas separation properties, including a remarkable CO2 permeability of 5040 Barrer with a high selectivity over CH4 of 38. Above 600 C, the strong emergence of ultramicroporosity (<7 Å) as evidenced by WAXD and CO2 adsorption studies elicits a prominent molecular sieving effect, yielding gas separation performance well above the permeability-selectivity trade-off curves of polymeric membranes. © 2013 Elsevier Ltd. All rights reserved.en
dc.description.sponsorshipThis research was supported by King Abdullah University of Science and Technology baseline funding for Yu Han and Ingo Pinnau.en
dc.publisherElsevier BVen
dc.titleCarbon molecular sieve gas separation membranes based on an intrinsically microporous polyimide precursoren
dc.typeArticleen
dc.contributor.departmentAdvanced Membranes and Porous Materials Research Centeren
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentChemical Science Programen
dc.contributor.departmentChemical and Biological Engineering Programen
dc.contributor.departmentComputational Bioscience Research Center (CBRC)en
dc.contributor.departmentNanostructured Functional Materials (NFM) laboratoryen
dc.identifier.journalCarbonen
kaust.authorMa, Xiaohuaen
kaust.authorSwaidan, Rajaen
kaust.authorTeng, Baiyangen
kaust.authorTan, Huaen
kaust.authorSalinas, Octavioen
kaust.authorLitwiller, Ericen
kaust.authorHan, Yuen
kaust.authorPinnau, Ingoen
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