CO2/light gas separation performance of cross-linked poly(vinylimidazolium) gel membranes as a function of ionic liquid loading and cross-linker content
[Display omitted] ► Cross-linked poly(RTIL)–RTIL gels for CO2/N2, CO2/CH4 and CO2/H2 separations. ► Gel membranes fabricated from di- and mono-functional RTIL monomers. ► RTIL loading (wt.%) and cross-linking monomer concentration (mol%) varied. ► CO2 permeability dramatically increased with RTIL lo...
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| Veröffentlicht in: | Journal of membrane science 2012-04, Vol.397-398, p.24-37 |
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| creator | Carlisle, Trevor K. Nicodemus, Garret D. Gin, Douglas L. Noble, Richard D. |
| description | [Display omitted]
► Cross-linked poly(RTIL)–RTIL gels for CO2/N2, CO2/CH4 and CO2/H2 separations. ► Gel membranes fabricated from di- and mono-functional RTIL monomers. ► RTIL loading (wt.%) and cross-linking monomer concentration (mol%) varied. ► CO2 permeability dramatically increased with RTIL loading. ► Reduced cross-linking monomer concentration generally improved CO2 permeability.
A series of cross-linked poly(vinylimidazolium)-RTIL gel membranes was synthesized and evaluated for room-temperature, ideal CO2/N2, CO2/CH4, and CO2/H2 separation performance. The membranes were formed by photo-polymerization of oligo(ethylene glycol)-functionalized cross-linking (i.e., di-functional) and non-cross-linking (i.e., mono-functional) vinylimidazolium RTIL monomers with non-polymerizable, “free RTIL.” The effect of free RTIL ([emim][Tf2N]) loading on CO2 separation performance was evaluated by varying RTIL loading at three levels (45, 65, and 75wt.%). The effect of cross-linker content on CO2 separation performance was also evaluated by varying the copolymer composition of cross-linked membranes from 5 to 100mol% di-functional monomer. The substituent on the mono-functional RTIL monomer was also varied to investigate the effect of substituent structure and chemistry on CO2 separation performance. CO2 permeability was dramatically increased with higher loading of free RTIL. Increased RTIL loading had no effect on CO2/N2 or CO2/CH4 permeability selectivity, but significantly improved CO2/H2 permeability selectivity. Reducing the cross-linking monomer concentration generally improved CO2 permeability. However, anomalous permeability and selectivity behavior was observed below critical concentrations of cross-linker. The effect of the substituent on the mono-functional monomer on CO2 separation performance was minimal compared to the effects of RTIL loading and copolymer composition. |
| doi_str_mv | 10.1016/j.memsci.2012.01.006 |
| format | Article |
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► Cross-linked poly(RTIL)–RTIL gels for CO2/N2, CO2/CH4 and CO2/H2 separations. ► Gel membranes fabricated from di- and mono-functional RTIL monomers. ► RTIL loading (wt.%) and cross-linking monomer concentration (mol%) varied. ► CO2 permeability dramatically increased with RTIL loading. ► Reduced cross-linking monomer concentration generally improved CO2 permeability.
A series of cross-linked poly(vinylimidazolium)-RTIL gel membranes was synthesized and evaluated for room-temperature, ideal CO2/N2, CO2/CH4, and CO2/H2 separation performance. The membranes were formed by photo-polymerization of oligo(ethylene glycol)-functionalized cross-linking (i.e., di-functional) and non-cross-linking (i.e., mono-functional) vinylimidazolium RTIL monomers with non-polymerizable, “free RTIL.” The effect of free RTIL ([emim][Tf2N]) loading on CO2 separation performance was evaluated by varying RTIL loading at three levels (45, 65, and 75wt.%). The effect of cross-linker content on CO2 separation performance was also evaluated by varying the copolymer composition of cross-linked membranes from 5 to 100mol% di-functional monomer. The substituent on the mono-functional RTIL monomer was also varied to investigate the effect of substituent structure and chemistry on CO2 separation performance. CO2 permeability was dramatically increased with higher loading of free RTIL. Increased RTIL loading had no effect on CO2/N2 or CO2/CH4 permeability selectivity, but significantly improved CO2/H2 permeability selectivity. Reducing the cross-linking monomer concentration generally improved CO2 permeability. However, anomalous permeability and selectivity behavior was observed below critical concentrations of cross-linker. The effect of the substituent on the mono-functional monomer on CO2 separation performance was minimal compared to the effects of RTIL loading and copolymer composition.</description><identifier>ISSN: 0376-7388</identifier><identifier>EISSN: 1873-3123</identifier><identifier>DOI: 10.1016/j.memsci.2012.01.006</identifier><language>eng</language><publisher>United States: Elsevier B.V</publisher><subject>ambient temperature ; artificial membranes ; carbon dioxide ; CO2 separation ; composite polymers ; crosslinking ; Gel ; gels ; Imidazolium ; Ionic liquid ; ionic liquids ; permeability ; Poly(RTIL)</subject><ispartof>Journal of membrane science, 2012-04, Vol.397-398, p.24-37</ispartof><rights>2012 Elsevier B.V.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c386t-3b14f90c3baa8fed1524675ad7a3350731c5a67ecbcf59c220a6bb5b501a6cf83</citedby><cites>FETCH-LOGICAL-c386t-3b14f90c3baa8fed1524675ad7a3350731c5a67ecbcf59c220a6bb5b501a6cf83</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0376738812000233$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>230,314,776,780,881,3537,27901,27902,65306</link.rule.ids><backlink>$$Uhttps://www.osti.gov/biblio/1211085$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Carlisle, Trevor K.</creatorcontrib><creatorcontrib>Nicodemus, Garret D.</creatorcontrib><creatorcontrib>Gin, Douglas L.</creatorcontrib><creatorcontrib>Noble, Richard D.</creatorcontrib><title>CO2/light gas separation performance of cross-linked poly(vinylimidazolium) gel membranes as a function of ionic liquid loading and cross-linker content</title><title>Journal of membrane science</title><description>[Display omitted]
► Cross-linked poly(RTIL)–RTIL gels for CO2/N2, CO2/CH4 and CO2/H2 separations. ► Gel membranes fabricated from di- and mono-functional RTIL monomers. ► RTIL loading (wt.%) and cross-linking monomer concentration (mol%) varied. ► CO2 permeability dramatically increased with RTIL loading. ► Reduced cross-linking monomer concentration generally improved CO2 permeability.
A series of cross-linked poly(vinylimidazolium)-RTIL gel membranes was synthesized and evaluated for room-temperature, ideal CO2/N2, CO2/CH4, and CO2/H2 separation performance. The membranes were formed by photo-polymerization of oligo(ethylene glycol)-functionalized cross-linking (i.e., di-functional) and non-cross-linking (i.e., mono-functional) vinylimidazolium RTIL monomers with non-polymerizable, “free RTIL.” The effect of free RTIL ([emim][Tf2N]) loading on CO2 separation performance was evaluated by varying RTIL loading at three levels (45, 65, and 75wt.%). The effect of cross-linker content on CO2 separation performance was also evaluated by varying the copolymer composition of cross-linked membranes from 5 to 100mol% di-functional monomer. The substituent on the mono-functional RTIL monomer was also varied to investigate the effect of substituent structure and chemistry on CO2 separation performance. CO2 permeability was dramatically increased with higher loading of free RTIL. Increased RTIL loading had no effect on CO2/N2 or CO2/CH4 permeability selectivity, but significantly improved CO2/H2 permeability selectivity. Reducing the cross-linking monomer concentration generally improved CO2 permeability. However, anomalous permeability and selectivity behavior was observed below critical concentrations of cross-linker. The effect of the substituent on the mono-functional monomer on CO2 separation performance was minimal compared to the effects of RTIL loading and copolymer composition.</description><subject>ambient temperature</subject><subject>artificial membranes</subject><subject>carbon dioxide</subject><subject>CO2 separation</subject><subject>composite polymers</subject><subject>crosslinking</subject><subject>Gel</subject><subject>gels</subject><subject>Imidazolium</subject><subject>Ionic liquid</subject><subject>ionic liquids</subject><subject>permeability</subject><subject>Poly(RTIL)</subject><issn>0376-7388</issn><issn>1873-3123</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><recordid>eNp9kU9v1DAQxSMEEkvhGyBhcSqHpOM4sbMXJLQqf6RKPUDP1sSxUy-OndpJpeWT8HHxNhw4cZrLb968ea8o3lKoKFB-dawmPSVlqxpoXQGtAPizYkc7wUpGa_a82AETvBSs614Wr1I6AlAB3X5X_D7c1lfOjvcLGTGRpGeMuNjgyayjCXFCrzQJhqgYUiqd9T_1QObgTpeP1p-cneyAv4Kz6_SBjNqR7KSP6HUiWQ6JWb16kssSeVhFnH1Y7UBcwMH6kaAf_tWORAW_aL-8Ll4YdEm_-TsvirvP1z8OX8ub2y_fDp9uSsU6vpSsp43Zg2I9Ymf0QNu64aLFQSBjLQhGVYtcaNUr0-5VXQPyvm_7FihyZTp2UbzfdENarMwhLlrdZw9eq0XSmlLo2gxdbtAcw8Oq0yInm5R2Lj8a1iRpw5tmLyhrMtps6NNTURs5RzthPEkK8tyWPMqtLXluSwKVua289m5bMxgkjtEmefc9AxwAuga4yMTHjdA5jUer49mszu0MNp69DsH-_8Qf012r1A</recordid><startdate>20120415</startdate><enddate>20120415</enddate><creator>Carlisle, Trevor K.</creator><creator>Nicodemus, Garret D.</creator><creator>Gin, Douglas L.</creator><creator>Noble, Richard D.</creator><general>Elsevier B.V</general><scope>FBQ</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QH</scope><scope>7UA</scope><scope>C1K</scope><scope>F1W</scope><scope>H97</scope><scope>L.G</scope><scope>OTOTI</scope></search><sort><creationdate>20120415</creationdate><title>CO2/light gas separation performance of cross-linked poly(vinylimidazolium) gel membranes as a function of ionic liquid loading and cross-linker content</title><author>Carlisle, Trevor K. ; Nicodemus, Garret D. ; Gin, Douglas L. ; Noble, Richard D.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c386t-3b14f90c3baa8fed1524675ad7a3350731c5a67ecbcf59c220a6bb5b501a6cf83</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>ambient temperature</topic><topic>artificial membranes</topic><topic>carbon dioxide</topic><topic>CO2 separation</topic><topic>composite polymers</topic><topic>crosslinking</topic><topic>Gel</topic><topic>gels</topic><topic>Imidazolium</topic><topic>Ionic liquid</topic><topic>ionic liquids</topic><topic>permeability</topic><topic>Poly(RTIL)</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Carlisle, Trevor K.</creatorcontrib><creatorcontrib>Nicodemus, Garret D.</creatorcontrib><creatorcontrib>Gin, Douglas L.</creatorcontrib><creatorcontrib>Noble, Richard D.</creatorcontrib><collection>AGRIS</collection><collection>CrossRef</collection><collection>Aqualine</collection><collection>Water Resources Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 3: Aquatic Pollution & Environmental Quality</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>OSTI.GOV</collection><jtitle>Journal of membrane science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Carlisle, Trevor K.</au><au>Nicodemus, Garret D.</au><au>Gin, Douglas L.</au><au>Noble, Richard D.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>CO2/light gas separation performance of cross-linked poly(vinylimidazolium) gel membranes as a function of ionic liquid loading and cross-linker content</atitle><jtitle>Journal of membrane science</jtitle><date>2012-04-15</date><risdate>2012</risdate><volume>397-398</volume><spage>24</spage><epage>37</epage><pages>24-37</pages><issn>0376-7388</issn><eissn>1873-3123</eissn><abstract>[Display omitted]
► Cross-linked poly(RTIL)–RTIL gels for CO2/N2, CO2/CH4 and CO2/H2 separations. ► Gel membranes fabricated from di- and mono-functional RTIL monomers. ► RTIL loading (wt.%) and cross-linking monomer concentration (mol%) varied. ► CO2 permeability dramatically increased with RTIL loading. ► Reduced cross-linking monomer concentration generally improved CO2 permeability.
A series of cross-linked poly(vinylimidazolium)-RTIL gel membranes was synthesized and evaluated for room-temperature, ideal CO2/N2, CO2/CH4, and CO2/H2 separation performance. The membranes were formed by photo-polymerization of oligo(ethylene glycol)-functionalized cross-linking (i.e., di-functional) and non-cross-linking (i.e., mono-functional) vinylimidazolium RTIL monomers with non-polymerizable, “free RTIL.” The effect of free RTIL ([emim][Tf2N]) loading on CO2 separation performance was evaluated by varying RTIL loading at three levels (45, 65, and 75wt.%). The effect of cross-linker content on CO2 separation performance was also evaluated by varying the copolymer composition of cross-linked membranes from 5 to 100mol% di-functional monomer. The substituent on the mono-functional RTIL monomer was also varied to investigate the effect of substituent structure and chemistry on CO2 separation performance. CO2 permeability was dramatically increased with higher loading of free RTIL. Increased RTIL loading had no effect on CO2/N2 or CO2/CH4 permeability selectivity, but significantly improved CO2/H2 permeability selectivity. Reducing the cross-linking monomer concentration generally improved CO2 permeability. However, anomalous permeability and selectivity behavior was observed below critical concentrations of cross-linker. The effect of the substituent on the mono-functional monomer on CO2 separation performance was minimal compared to the effects of RTIL loading and copolymer composition.</abstract><cop>United States</cop><pub>Elsevier B.V</pub><doi>10.1016/j.memsci.2012.01.006</doi><tpages>14</tpages></addata></record> |
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| source | Elsevier ScienceDirect Journals |
| subjects | ambient temperature artificial membranes carbon dioxide CO2 separation composite polymers crosslinking Gel gels Imidazolium Ionic liquid ionic liquids permeability Poly(RTIL) |
| title | CO2/light gas separation performance of cross-linked poly(vinylimidazolium) gel membranes as a function of ionic liquid loading and cross-linker content |
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