dc.contributor.author | Chen, Qingjun | |
dc.contributor.author | Wang, Siyu | |
dc.contributor.author | Rout, Kumar Ranjan | |
dc.contributor.author | Chen, De | |
dc.date.accessioned | 2022-09-08T13:30:28Z | |
dc.date.available | 2022-09-08T13:30:28Z | |
dc.date.created | 2020-10-02T02:17:14Z | |
dc.date.issued | 2020 | |
dc.identifier.citation | Catalysis Today. 2020, 1-8. | en_US |
dc.identifier.issn | 0920-5861 | |
dc.identifier.uri | https://hdl.handle.net/11250/3016667 | |
dc.description.abstract | A 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.iso | eng | en_US |
dc.publisher | Elsevier | en_US |
dc.rights | Navngivelse 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/deed.no | * |
dc.subject | NGCC power plant | en_US |
dc.subject | Post-combustion CO2 capture | en_US |
dc.subject | Natural gas processing | en_US |
dc.subject | PEI/MCS | en_US |
dc.subject | CO2 capture | en_US |
dc.title | Development of Polyethylenimine (PEI)-impregnated mesoporous carbon spheres for low-concentration CO2 capture | en_US |
dc.type | Peer reviewed | en_US |
dc.type | Journal article | en_US |
dc.description.version | acceptedVersion | en_US |
dc.rights.holder | © 2021 The Authors. Published by Elsevier B.V | en_US |
dc.source.pagenumber | 8 | en_US |
dc.source.volume | 369 | en_US |
dc.source.journal | Catalysis Today | en_US |
dc.identifier.doi | 10.1016/j.cattod.2020.06.016 | |
dc.identifier.cristin | 1836441 | |
dc.relation.project | Norges forskningsråd: 268508 | en_US |
cristin.ispublished | true | |
cristin.fulltext | postprint | |
cristin.qualitycode | 2 | |