Triptycene dimethyl-bridgehead dianhydride-based intrinsically microporous hydroxyl-functionalized polyimide for natural gas upgrading

Handle URI:
http://hdl.handle.net/10754/617799
Title:
Triptycene dimethyl-bridgehead dianhydride-based intrinsically microporous hydroxyl-functionalized polyimide for natural gas upgrading
Authors:
Alghunaimi, Fahd; Ghanem, Bader ( 0000-0002-2044-2434 ) ; Alaslai, Nasser Y.; Mukaddam, Mohsin Ahmed ( 0000-0002-0751-7876 ) ; Pinnau, Ingo ( 0000-0003-3040-9088 )
Abstract:
The synthesis and gas permeation properties of a high-performance hydroxyl-functionalized PIM-polyimide (TDA1-APAF) prepared from a novel 9,10-dimethyl-2,3,6,7-triptycene tetracarboxylic dianhydride (TDA1) and a commercially available 2,2-bis(3-amino-4-hydroxyphenyl)-hexafluoropropane (APAF) diamine monomer are reported. The microporous polymer had a BET surface area based on nitrogen adsorption of 260 m2 g−1. A freshly prepared sample exhibited excellent gas permeation properties: (i) CO2 permeability of 40 Barrer coupled with a CO2/CH4 selectivity of 55 and (ii) H2 permeability of 94 Barrer with a H2/CH4 selectivity of 129. Physical aging over 250 days resulted in significantly enhanced CO2/CH4 and H2/CH4 selectivities of 75 and 183, respectively with only ~ 25% loss in CO2 and H2 permeability. Aged TDA1-APAF exhibited 5-fold higher pure-gas CO2 permeability (30 Barrer) and two-fold higher CO2/CH4 permselectivity over conventional dense cellulose triacetate membranes at 2 bar. In addition, TDA1-APAF polyimide had a N2/CH4 selectivity of 2.3, thereby making it potentially possible to bring natural gas with low, but unacceptable nitrogen content to pipeline specification. Gas mixture permeation experiments with a 1:1 CO2/CH4 feed mixture demonstrated higher mixed- than pure-gas selectivity and plasticization resistance up to 30 bar. These results suggest that intrinsically microporous hydroxyl-functionalized triptycene-based polyimides are promising candidate membrane materials for removal of CO2 from natural gas and hydrogen purification in petrochemical refinery applications.
KAUST Department:
Advanced Membranes and Porous Materials Center (AMPMC); Physical Sciences and Engineering (PSE) Division; Chemical and Biological Engineering Program
Citation:
Triptycene dimethyl-bridgehead dianhydride-based intrinsically microporous hydroxyl-functionalized polyimide for natural gas upgrading 2016 Journal of Membrane Science
Publisher:
Elsevier BV
Journal:
Journal of Membrane Science
Issue Date:
28-Jul-2016
DOI:
10.1016/j.memsci.2016.07.058
Type:
Article
ISSN:
03767388
Sponsors:
The research reported in this publication was supported by funding from King Abdullah University of Science and Technology (KAUST).
Additional Links:
http://linkinghub.elsevier.com/retrieve/pii/S0376738816311322
Appears in Collections:
Articles

Full metadata record

DC FieldValue Language
dc.contributor.authorAlghunaimi, Fahden
dc.contributor.authorGhanem, Baderen
dc.contributor.authorAlaslai, Nasser Y.en
dc.contributor.authorMukaddam, Mohsin Ahmeden
dc.contributor.authorPinnau, Ingoen
dc.date.accessioned2016-08-01T10:40:38Z-
dc.date.available2016-08-01T10:40:38Z-
dc.date.issued2016-07-28-
dc.identifier.citationTriptycene dimethyl-bridgehead dianhydride-based intrinsically microporous hydroxyl-functionalized polyimide for natural gas upgrading 2016 Journal of Membrane Scienceen
dc.identifier.issn03767388-
dc.identifier.doi10.1016/j.memsci.2016.07.058-
dc.identifier.urihttp://hdl.handle.net/10754/617799-
dc.description.abstractThe synthesis and gas permeation properties of a high-performance hydroxyl-functionalized PIM-polyimide (TDA1-APAF) prepared from a novel 9,10-dimethyl-2,3,6,7-triptycene tetracarboxylic dianhydride (TDA1) and a commercially available 2,2-bis(3-amino-4-hydroxyphenyl)-hexafluoropropane (APAF) diamine monomer are reported. The microporous polymer had a BET surface area based on nitrogen adsorption of 260 m2 g−1. A freshly prepared sample exhibited excellent gas permeation properties: (i) CO2 permeability of 40 Barrer coupled with a CO2/CH4 selectivity of 55 and (ii) H2 permeability of 94 Barrer with a H2/CH4 selectivity of 129. Physical aging over 250 days resulted in significantly enhanced CO2/CH4 and H2/CH4 selectivities of 75 and 183, respectively with only ~ 25% loss in CO2 and H2 permeability. Aged TDA1-APAF exhibited 5-fold higher pure-gas CO2 permeability (30 Barrer) and two-fold higher CO2/CH4 permselectivity over conventional dense cellulose triacetate membranes at 2 bar. In addition, TDA1-APAF polyimide had a N2/CH4 selectivity of 2.3, thereby making it potentially possible to bring natural gas with low, but unacceptable nitrogen content to pipeline specification. Gas mixture permeation experiments with a 1:1 CO2/CH4 feed mixture demonstrated higher mixed- than pure-gas selectivity and plasticization resistance up to 30 bar. These results suggest that intrinsically microporous hydroxyl-functionalized triptycene-based polyimides are promising candidate membrane materials for removal of CO2 from natural gas and hydrogen purification in petrochemical refinery applications.en
dc.description.sponsorshipThe research reported in this publication was supported by funding from King Abdullah University of Science and Technology (KAUST).en
dc.language.isoenen
dc.publisherElsevier BVen
dc.relation.urlhttp://linkinghub.elsevier.com/retrieve/pii/S0376738816311322en
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Journal of Membrane Science. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Membrane Science, 28 July 2016. DOI: 10.1016/j.memsci.2016.07.058en
dc.subjectpolyimidesen
dc.subjecttriptyceneen
dc.subjecthydroxyl functionalizationen
dc.subjectmixed-gas permeationen
dc.subjectplasticizationen
dc.subjectphysical agingen
dc.subjectnatural gasen
dc.titleTriptycene dimethyl-bridgehead dianhydride-based intrinsically microporous hydroxyl-functionalized polyimide for natural gas upgradingen
dc.typeArticleen
dc.contributor.departmentAdvanced Membranes and Porous Materials Center (AMPMC)en
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentChemical and Biological Engineering Programen
dc.identifier.journalJournal of Membrane Scienceen
dc.eprint.versionPost-printen
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)en
kaust.authorAlghunaimi, Fahden
kaust.authorGhanem, Baderen
kaust.authorAlaslai, Nasser Y.en
kaust.authorMukaddam, Mohsin Ahmeden
kaust.authorPinnau, Ingoen
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