N-doped porous carbons with exceptionally high CO2 selectivity for CO2 capture

doi:10.1016/j.carbon.2016.12.056

	N-doped porous carbons with exceptionally high CO2 selectivity for CO2 capture
	Yang, Qihua 2; Modak, Arindam 2; Ren, Xiaomin 1,2; Yang, Hengquan 3; Li, He 2; Chen, Jian 1,2; Wei, Lijuan 3
刊名	CARBON
	2017-04-01
卷号	114 页码:473-481
ISSN号	0008-6223
DOI	10.1016/j.carbon.2016.12.056
文献子类	Article
英文摘要	Porous carbons have been considered to be promising sorbents for carbon capture and sequestration. For achieving high capture capacity and CO2/N-2 selectivity, precise control of porous structures and surface polarity is necessary. Herein we report the preparation of N-doped porous carbon via pyrolysis of microporous polyindole with KOH as the activator under N-2. Analysis results suggest that nitrogen amounts and textural properties of carbon materials could be adjusted by KOH content and pyrolysis temperature. Generally, higher V-uitramicro/V-micro ratio (up to 0.64) and higher N-doping amounts (up to 6.87 wt%) could be obtained at a relative low pyrolysis temperature and KOH content. Impressively, the porous carbons show extremely high Henry's CO2/N-2 selectivity up to 136 at 298 K, among the highest of carbon based materials. Even measured using simulating flue gas (15% CO2/85% N2) at 308 K, the porous carbons also afford very high CO2/N-2 selectivity of 63 with high CO2 adsorption capacity of 1.42 mmol/g. The high CO2/N-2 selectivity and CO2 uptake capacity under flue gas are mainly related with high V-ultramicro/V-micro ratio and N content of porous carbons. Our results imply that porous carbons with optimized surface polarity and porous structure are promising solid adsorbents for CO2 capture. (C) 2016 Elsevier Ltd. All rights reserved.
WOS关键词	METAL-ORGANIC FRAMEWORK ; FLUE-GAS ; ADSORPTION PROPERTIES ; DIOXIDE CAPTURE ; MICROPOROUS POLYMERS ; NITROGEN ; ADSORBENT ; SEPARATION ; THERMODYNAMICS ; MONOLITHS
WOS研究方向	Chemistry ; Materials Science
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000393249600054
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/169702]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
通讯作者	Yang, Qihua; Yang, Hengquan
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, State Key Lab Catalysis, iChEM, Dalian Inst Chem Phys, 457 Zhongshan Rd, Dalian 116023, Peoples R China 3.Shanxi Univ, Sch Chem & Chem Engn, Taiyuan 030006, Peoples R China
推荐引用方式 GB/T 7714	Yang, Qihua,Modak, Arindam,Ren, Xiaomin,et al. N-doped porous carbons with exceptionally high CO2 selectivity for CO2 capture[J]. CARBON,2017,114:473-481.
APA	Yang, Qihua.,Modak, Arindam.,Ren, Xiaomin.,Yang, Hengquan.,Li, He.,...&Wei, Lijuan.(2017).N-doped porous carbons with exceptionally high CO2 selectivity for CO2 capture.CARBON,114,473-481.
MLA	Yang, Qihua,et al."N-doped porous carbons with exceptionally high CO2 selectivity for CO2 capture".CARBON 114(2017):473-481.