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dc.contributor.authorChen, Qingjun
dc.contributor.authorWang, Siyu
dc.contributor.authorRout, Kumar Ranjan
dc.contributor.authorChen, De
dc.date.accessioned2022-09-08T13:30:28Z
dc.date.available2022-09-08T13:30:28Z
dc.date.created2020-10-02T02:17:14Z
dc.date.issued2020
dc.identifier.citationCatalysis Today. 2020, 1-8.en_US
dc.identifier.issn0920-5861
dc.identifier.urihttps://hdl.handle.net/11250/3016667
dc.description.abstractA novel low-concentration CO2 capture material (PEI/MCS) was developed by loading polyethylenimine (PEI) over mesoporous carbon spheres (MCS) with high porosity. The effects of pore structure, PEI loading, capture temperature, and promoters on CO2 capture of PEI/MCS were studied. The MCS with perfect spherical morphology was successfully synthesized by a hard-template assisted reverse emulsion method. The pore structure of MCS was adjusted by tuning the ratio of silica to carbon (Si/C) in the precursors. With increasing the Si/C from 0.8 to 1.1, the pore volume of MCS increased from 1.25 to 2.68 cm3/g. The optimal PEI loadings depending on the pore volume of MCS were 45, 62.5, and 65 wt.% for MCS-0.8, MCS-1.1, and MCS-1.5, respectively. The highest CO2 capture capacity (3.22 mmol/g) was achieved on 62.5PEI/MCS-1.1 at CO2 partial pressure of 0.05 bar (5 vol.%, a typical concentration of the tail gas from natural gas power plant and natural gas processing plant) and temperature of 75 °C, outperforming most of the solid amine sorbents reported at similar condition. However, the cycling stability of PEI/MCS is poor at the capture-regeneration temperature of 75 °C. The promoters Span 80 and 1,2-epoxybutane did not show remarkable effect on the cycling stability of PEI/MCS at 75 °C. Decreasing the capture-regeneration temperature can significantly improve the stability of PEI/MCS and there is almost no CO2 capacity loss (regeneration >99.5 %) when the temperature decreased to 50 °C. As a result of high CO2 capacity and excellent regenerability and stability, PEI /MCS will be one of the ideal candidates for CO2 capture in the future.en_US
dc.language.isoengen_US
dc.publisherElsevieren_US
dc.rightsNavngivelse 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/deed.no*
dc.subjectNGCC power planten_US
dc.subjectPost-combustion CO2 captureen_US
dc.subjectNatural gas processingen_US
dc.subjectPEI/MCSen_US
dc.subjectCO2 captureen_US
dc.titleDevelopment of Polyethylenimine (PEI)-impregnated mesoporous carbon spheres for low-concentration CO2 captureen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.description.versionacceptedVersionen_US
dc.rights.holder© 2021 The Authors. Published by Elsevier B.Ven_US
dc.source.pagenumber8en_US
dc.source.volume369en_US
dc.source.journalCatalysis Todayen_US
dc.identifier.doi10.1016/j.cattod.2020.06.016
dc.identifier.cristin1836441
dc.relation.projectNorges forskningsråd: 268508en_US
cristin.ispublishedtrue
cristin.fulltextpostprint
cristin.qualitycode2


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Navngivelse 4.0 Internasjonal
Except where otherwise noted, this item's license is described as Navngivelse 4.0 Internasjonal