DOI: 10.1016/j.jcou.2017.01.006
Scopus记录号: 2-s2.0-85009998041
论文题名: Highly microporous activated carbons from biomass for CO2 capture and effective micropores at different conditions
作者: Serafin J. ; Narkiewicz U. ; Morawski A.W. ; Wróbel R.J. ; Michalkiewicz B.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2017
卷: 18 语种: 英语
英文关键词: Activated carbon
; Biomass
; CO2 adsorption
; Isosteric heat of adsorption
; Micropores
; Toth equation
Scopus关键词: Activated carbon
; Adsorption
; Adsorption isotherms
; Biomass
; Gas adsorption
; Microporosity
; Clausius-Clapeyron equations
; Heterogeneous interactions
; Isosteric heat of adsorption
; Micropores
; Microporous activated carbons
; Nitrogen adsorption isotherm
; Surface characterization
; Toth equation
; Carbon dioxide
英文摘要: This work reports on the preparation and examination of biomass-derived activated carbons featuring high CO2 adsorption capacity. A detailed micropore structure analysis and surface characterization were performed using nitrogen adsorption isotherms at 77K and carbon dioxide isotherms at 273K. At 273K and 1bar only micropores in the range of 0.30-0.86nm were mainly effective for CO2 adsorption. When the temperature increased to 298K, the ranges of effective micropores for CO2 adsorption at 1bar decreased to 0.30-0.33nm. For the typical flue gas conditions (partial pressure of CO2 0.15bar), micropores in the range of 0.30-0.57nm were mainly effective for CO2 adsorption. The precursor had a strong effect on the textural properties of the resulting carbon and CO2 adsorption. Activated carbon prepared from pomegranate peels showed the highest CO2 adsorption and selectivity (CO2/N2). The experimental isotherm data of activated carbon produced from pomegranate peels were analysed using Langmuir, Freundlich, Sips, and Toth isotherm equations. The fitting details showed that the multitemperature Toth equation is a powerful tool to mathematically represent CO2 isotherms on activated carbon produced from pomegranate peels. The isosteric heat of adsorption was calculated by fitting the Toth equation to the adsorption isotherms and applying the Clausius-Clapeyron equation. The value of the heterogeneity coefficient and isosteric heat of adsorption suggested heterogeneous interactions between CO2 and sorbent surface. © 2017 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52781
Appears in Collections: 影响、适应和脆弱性
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Recommended Citation:
Serafin J.,Narkiewicz U.,Morawski A.W.,et al. Highly microporous activated carbons from biomass for CO2 capture and effective micropores at different conditions[J]. Journal of CO2 Utilization,2017-01-01,18