Preparation of potassium intercalated carbons by in-situ activation and speciation for CO2 capture from flue gas
Cao, Shicheng1,2; Zhao, Hongyu2; Hu, Deng2; Wang, Jun-an1; Li, Minkang1,2; Zhou, Zhongjin2; Shen, Qun2; Sun, Nannan2; Wei, Wei2,3,4
2020-01
Source PublicationJOURNAL OF CO2 UTILIZATION
ISSN2212-9820
Volume35Pages:59-66
Status已发表
DOI10.1016/j.jcou.2019.09.001
AbstractNitrogen and/or sulfur doped carbons were extensively investigated as CO2 adsorbents, however their performance in CO2 capture from combustion flue gas, which is the largest stationary emission source, was less promising. Herein, potassium was used as a dopant for carbon, and a new series of materials, namely potassium intercalated carbons (PICs), were prepared sequentially by oxidation of mesoporous carbon, potassium ion exchange, and calcination. Based on results from FT-IR, XPS, TG-MS, etc., it was found the pre-loaded potassium interacted with the carbon matrix during calcination, enabled great flexibility in: (1) porosity adjustment by "insitu activation", and (2) surface chemistry manipulation by potassium intercalation. Taking together, the optimized sample (PIC-700) showed fast and stable CO2 uptake of 5.23 wt.% in flue gas conditions (40 degrees C, 1 bar, 15%O-2), which is among the highest for carbon-based adsorbents. Such promising performance is directly related to the enhanced CO2 affinity due to the presence of potassium dopants. Dynamic separation of CO2 from 15%O-2/85%N-2 showed similar adsorption capacity, and no performance decay could be observed during temperature swing cycles, demonstrating the great potential for the PICs for practical CO2 capture applications.
KeywordCO2 capture Carbon Adsorption Materials Flue gas
Indexed BySCI
Language英语
Funding ProjectShanghai Natural Science Foundation[18ZR1444200]
WOS Research AreaChemistry ; Engineering
WOS SubjectChemistry, Multidisciplinary ; Engineering, Chemical
WOS IDWOS:000504484800006
PublisherELSEVIER SCI LTD
EISSN2212-9839
WOS KeywordMETAL-ORGANIC FRAMEWORKS ; ONE-POT SYNTHESIS ; N-DOPED CARBON ; DIOXIDE CAPTURE ; MESOPOROUS CARBON ; LOW-COST ; ADSORPTION ; NANOSPHERES ; SELECTIVITY ; ADSORBENTS
Original Document TypeArticle
Citation statistics
Cited Times [WOS]:0   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://kms.shanghaitech.edu.cn/handle/2MSLDSTB/104994
Collection物质科学与技术学院_特聘教授组_魏伟组
Corresponding AuthorSun, Nannan; Wei, Wei
Affiliation1.Shanghai Univ, Sch Mat Sci & Engn, Shanghai 200444, Peoples R China
2.Chinese Acad Sci, Shanghai Adv Res Inst, CAS Key Lab Low Carbon Convers Sci & Engn, Shanghai 201210, Peoples R China
3.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China
4.Chinese Acad Sci, Inst Urban Environm, Ctr Excellence Urban Atmospher Environm, Xiamen 361021, Fujian, Peoples R China
Corresponding Author AffilicationSchool of Physical Science and Technology
Recommended Citation
GB/T 7714
Cao, Shicheng,Zhao, Hongyu,Hu, Deng,et al. Preparation of potassium intercalated carbons by in-situ activation and speciation for CO2 capture from flue gas[J]. JOURNAL OF CO2 UTILIZATION,2020,35:59-66.
APA Cao, Shicheng.,Zhao, Hongyu.,Hu, Deng.,Wang, Jun-an.,Li, Minkang.,...&Wei, Wei.(2020).Preparation of potassium intercalated carbons by in-situ activation and speciation for CO2 capture from flue gas.JOURNAL OF CO2 UTILIZATION,35,59-66.
MLA Cao, Shicheng,et al."Preparation of potassium intercalated carbons by in-situ activation and speciation for CO2 capture from flue gas".JOURNAL OF CO2 UTILIZATION 35(2020):59-66.
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