Ultra-High Surface Area Activated Porous Asphalt for CO2 Capture through Competitive Adsorption at High Pressures

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dc.citation.articleNumber1600693en_US
dc.citation.issueNumber1en_US
dc.citation.journalTitleAdvanced Energy Materialsen_US
dc.citation.volumeNumber7en_US
dc.contributor.authorJalilov, Almaz S.en_US
dc.contributor.authorLi, Yilunen_US
dc.contributor.authorTian, Jianen_US
dc.contributor.authorTour, James M.en_US
dc.contributor.orgNanoCarbon Centeren_US
dc.date.accessioned2017-02-13T16:53:10Zen_US
dc.date.available2017-02-13T16:53:10Zen_US
dc.date.issued2017en_US
dc.description.abstractThis study reports an improved method for activating asphalt to produce ultra-high surface area porous carbons. Pretreatment of asphalt (untreated Gilsonite, uGil) at 400 °C for 3 h removes the more volatile organic compounds to form pretreated asphalt (uGil-P) material with a larger fraction of higher molecular weight π-conjugated asphaltenes. Subsequent activation of uGil-P at 900 °C gives an ultra-high surface area (4200 m2 g−1) porous carbon material (uGil-900) with a mixed micro and mesoporous structure. uGil-900 shows enhanced room temperature CO2 uptake capacity at 54 bar of 154 wt% (35 mmol g−1). The CH4 uptake capacity is 37.5 wt% (24 mmol g−1) at 300 bar. These are relevant pressures in natural gas production. The room temperature working CO2 uptake capacity for uGil-900 is 19.1 mmol g−1 (84 wt%) at 20 bar and 32.6 mmol g−1 (143 wt%) at 50 bar. In order to further assess the reliability of uGil-900 for CO2 capture at elevated pressures, the authors study competitive sorption of CO2 and CH4 on uGil-900 at pressures from 1 to 20 bar at 25 °C. CO2/CH4 displacement constants are measured at 2 to 40 bar, and found to increase significantly with pressure and surface area.en_US
dc.identifier.citationJalilov, Almaz S., Li, Yilun, Tian, Jian, et al.. "Ultra-High Surface Area Activated Porous Asphalt for CO2 Capture through Competitive Adsorption at High Pressures." <i>Advanced Energy Materials,</i> 7, no. 1 (2017) Wiley: http://dx.doi.org/10.1002/aenm.201600693.en_US
dc.identifier.doihttp://dx.doi.org/10.1002/aenm.201600693en_US
dc.identifier.urihttps://hdl.handle.net/1911/93910en_US
dc.language.isoengen_US
dc.publisherWileyen_US
dc.rightsThis is an author's peer-reviewed final manuscript, as accepted by the publisher. The published article is copyrighted by Wiley.en_US
dc.subject.keywordasphalten_US
dc.subject.keywordcarbon dioxide captureen_US
dc.subject.keywordporous carbonen_US
dc.subject.keywordnatural gasen_US
dc.subject.keywordcompetitive adsorptionen_US
dc.titleUltra-High Surface Area Activated Porous Asphalt for CO2 Capture through Competitive Adsorption at High Pressuresen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpost-printen_US
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