DOI: 10.1016/j.jcou.2016.05.004
Scopus记录号: 2-s2.0-84971236421
论文题名: Developing microporosity in Kevlar®-derived carbon fibers by CO2 activation for CO2 adsorption
作者: Choma J. ; Osuchowski L. ; Marszewski M. ; Dziura A. ; Jaroniec M.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2016
卷: 16 起始页码: 17
结束页码: 22
语种: 英语
英文关键词: Carbon fibers
; Carbonization
; CO2 activation
; CO2 adsorption
; Kevlar®
Scopus关键词: Activated carbon
; Adsorption
; Aramid fibers
; Benzene
; Carbon fibers
; Carbonization
; Chemical activation
; Fibers
; Microporosity
; Adsorption properties
; Benzene adsorption
; Fiber morphology
; Koh activated carbons
; Micro-porous structure
; Micropore volumes
; Resulting materials
; Total pore volume
; Carbon dioxide
英文摘要: A series of activated carbon fibers (CFS) has been prepared from Kevlar® by carbonization and subsequent CO2 activation. The resulting materials exhibited the specific surface areas in the range of 50-1240 m2/g, total pore volumes in the range of 0.02-0.61 cm3/g, and micropore volumes in the range of 0.02-0.54 cm3/g. The well-developed microporous structure resulted in very good CO2 adsorption properties; the best uptake was 6.58 mmol/g of CO2 (at 0 °C and p = 800 mmHg). The CO2 activated Kevlar®-derived CFS achieved better CO2 uptakes than analogous carbons activated in KOH, but the latter outperformed them in benzene adsorption. We concluded that almost exclusively ultramicroporous (w < 1 nm) CO2-activated CFS adsorbed more CO2 due to the presence of small micropores, whereas the KOH-activated carbons possessed larger micropores, which are essential for adsorption of benzene and related molecules. An additional advantage of the CO2 activated Kevlar®-derived CFS is the preservation of fiber morphology, which can be destroyed during KOH activation. © 2016 Elsevier Ltd. All rights reserved. 资助项目: National Science Centre
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52852
Appears in Collections: 影响、适应和脆弱性
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Recommended Citation:
Choma J.,Osuchowski L.,Marszewski M.,et al. Developing microporosity in Kevlar®-derived carbon fibers by CO2 activation for CO2 adsorption[J]. Journal of CO2 Utilization,2016-01-01,16