High pressure pure- and mixed-gas separation of CO2/CH4 by thermally-rearranged and carbon molecular sieve membranes derived from a polyimide of intrinsic microporosity

Handle URI:
http://hdl.handle.net/10754/563059
Title:
High pressure pure- and mixed-gas separation of CO2/CH4 by thermally-rearranged and carbon molecular sieve membranes derived from a polyimide of intrinsic microporosity
Authors:
Swaidan, Raja ( 0000-0002-9296-6501 ) ; Ma, Xiaohua; Litwiller, Eric ( 0000-0001-5366-0967 ) ; Pinnau, Ingo ( 0000-0003-3040-9088 )
Abstract:
Natural gas sweetening, one of the most promising venues for the growth of the membrane gas separation industry, is dominated by polymeric materials with relatively low permeabilities and moderate selectivities. One strategy towards improving the gas transport properties of a polymer is enhancement of microporosity either by design of polymers of intrinsic microporosity (PIMs) or by thermal treatment of polymeric precursors. For the first time, the mixed-gas CO2/CH4 transport properties are investigated for a complete series of thermally-rearranged (TR) (440°C) and carbon molecular sieve (CMS) membranes (600, 630 and 800°C) derived from a polyimide of intrinsic microporosity (PIM-6FDA-OH). The pressure dependence of permeability and selectivity is reported up to 30bar for 1:1, CO2:CH4 mixed-gas feeds at 35°C. The TR membrane exhibited ~15% higher CO2/CH4 selectivity relative to pure-gas feeds due to reductions in mixed-gas CH4 permeability reaching 27% at 30bar. This is attributed to increased hindrance of CH4 transport by co-permeation of CO2. Interestingly, unusual increases in mixed-gas CH4 permeabilities relative to pure-gas values were observed for the CMS membranes, resulting in up to 50% losses in mixed-gas selectivity over the applied pressure range. © 2013 Elsevier B.V.
KAUST Department:
Advanced Membranes and Porous Materials Research Center; Physical Sciences and Engineering (PSE) Division; Chemical and Biological Engineering Program
Publisher:
Elsevier BV
Journal:
Journal of Membrane Science
Issue Date:
Nov-2013
DOI:
10.1016/j.memsci.2013.07.057
Type:
Article
ISSN:
03767388
Sponsors:
This research was supported by King Abdullah University of Science and Technology baseline funding for Ingo Pinnau.
Appears in Collections:
Articles; Advanced Membranes and Porous Materials Research Center; Physical Sciences and Engineering (PSE) Division; Chemical and Biological Engineering Program

Full metadata record

DC FieldValue Language
dc.contributor.authorSwaidan, Rajaen
dc.contributor.authorMa, Xiaohuaen
dc.contributor.authorLitwiller, Ericen
dc.contributor.authorPinnau, Ingoen
dc.date.accessioned2015-08-03T11:34:50Zen
dc.date.available2015-08-03T11:34:50Zen
dc.date.issued2013-11en
dc.identifier.issn03767388en
dc.identifier.doi10.1016/j.memsci.2013.07.057en
dc.identifier.urihttp://hdl.handle.net/10754/563059en
dc.description.abstractNatural gas sweetening, one of the most promising venues for the growth of the membrane gas separation industry, is dominated by polymeric materials with relatively low permeabilities and moderate selectivities. One strategy towards improving the gas transport properties of a polymer is enhancement of microporosity either by design of polymers of intrinsic microporosity (PIMs) or by thermal treatment of polymeric precursors. For the first time, the mixed-gas CO2/CH4 transport properties are investigated for a complete series of thermally-rearranged (TR) (440°C) and carbon molecular sieve (CMS) membranes (600, 630 and 800°C) derived from a polyimide of intrinsic microporosity (PIM-6FDA-OH). The pressure dependence of permeability and selectivity is reported up to 30bar for 1:1, CO2:CH4 mixed-gas feeds at 35°C. The TR membrane exhibited ~15% higher CO2/CH4 selectivity relative to pure-gas feeds due to reductions in mixed-gas CH4 permeability reaching 27% at 30bar. This is attributed to increased hindrance of CH4 transport by co-permeation of CO2. Interestingly, unusual increases in mixed-gas CH4 permeabilities relative to pure-gas values were observed for the CMS membranes, resulting in up to 50% losses in mixed-gas selectivity over the applied pressure range. © 2013 Elsevier B.V.en
dc.description.sponsorshipThis research was supported by King Abdullah University of Science and Technology baseline funding for Ingo Pinnau.en
dc.publisherElsevier BVen
dc.subjectCarbon molecular sieveen
dc.subjectCO2/CH4 mixed-gas permeationen
dc.subjectGas separationen
dc.subjectIntrinsic microporosityen
dc.subjectThermal-rearrangementen
dc.titleHigh pressure pure- and mixed-gas separation of CO2/CH4 by thermally-rearranged and carbon molecular sieve membranes derived from a polyimide of intrinsic microporosityen
dc.typeArticleen
dc.contributor.departmentAdvanced Membranes and Porous Materials Research Centeren
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentChemical and Biological Engineering Programen
dc.identifier.journalJournal of Membrane Scienceen
kaust.authorSwaidan, Rajaen
kaust.authorMa, Xiaohuaen
kaust.authorLitwiller, Ericen
kaust.authorPinnau, Ingoen
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