DOI: 10.1016/j.jcou.2018.12.005
Scopus记录号: 2-s2.0-85058704773
论文题名: Pollen-derived porous carbon by KOH activation: Effect of physicochemical structure on CO 2 adsorption
作者: Choi S.W. ; Tang J. ; Pol V.G. ; Lee K.B.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2019
卷: 29 起始页码: 146
结束页码: 155
语种: 英语
英文关键词: Carbon dioxide adsorption
; KOH activation
; Pollen-derived porous carbon
; Surface chemistry
; Textural property
Scopus关键词: Carbon dioxide
; Carbonization
; Chemical activation
; Microporosity
; Nitrogen
; Pore size
; Porous materials
; Potassium hydroxide
; Surface chemistry
; Adsorption desorption
; Carbon dioxide adsorption
; KOH activation
; Micro-porous carbons
; Physicochemical property
; Porous carbons
; Temperature swing operation
; Textural properties
; Gas adsorption
英文摘要: Novel microporous carbons were prepared from bee-collected pollens through carbonization and KOH activation. In the activation, various mass ratios of KOH/carbonized pollen from 1:3 to 3:1 were tested, and their effect on the physicochemical properties and CO 2 adsorption performance was analyzed. As the KOH amount increased, the specific surface area and total pore volume increased because of the development of micropores during activation. Among the developed porous carbons, the sample activated with a high ratio (3:1) of KOH/carbonized pollen showed the highest CO 2 adsorption uptake at 1 bar. However, the sample activated with a KOH/carbonized pollen mass ratio of 1:1 exhibited the highest CO 2 adsorption uptake at 0.15 bar owing to different micropore distributions and nitrogen contents originating from the pollen precursor. Because narrower micropores are more important in the low-pressure region, cumulative pore volumes with pore sizes of less than 0.6 and 0.8 nm were well correlated with the CO 2 adsorption uptake at 0.15 and 1 bar, respectively. Further, samples with residual nitrogen content showed high CO 2 /N 2 selectivity. The developed microporous carbons also showed excellent adsorption-desorption cyclic stability during regeneration by simple N 2 purging or by temperature-swing operation. © 2018 Elsevier Ltd. All rights reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/117318
Appears in Collections: 气候变化与战略
There are no files associated with this item.
Recommended Citation:
Choi S.W.,Tang J.,Pol V.G.,et al. Pollen-derived porous carbon by KOH activation: Effect of physicochemical structure on CO 2 adsorption[J]. Journal of CO2 Utilization,2019-01-01,29