DOI: 10.1016/j.jcou.2017.06.010
Scopus记录号: 2-s2.0-85021693331
论文题名: Determination and analysis of CO2 capture kinetics and mechanisms on the novel graphene-based adsorbents
作者: Kudahi S.N. ; Noorpoor A.R. ; Mahmoodi N.M.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2017
卷: 21 起始页码: 17
结束页码: 29
语种: 英语
英文关键词: Activation parameters
; Adsorption kinetic models
; CO2 capture
; Graphene-based adsorbents
; Rate-limiting kinetic models
Scopus关键词: Activation energy
; Adsorbents
; Adsorption
; Carbon dioxide
; Chemical activation
; Diffusion
; Kinetic parameters
; Kinetic theory
; Kinetics
; Activation parameter
; Adsorption kinetics
; Exponential kinetics
; Interparticle diffusion
; Intraparticle diffusion models
; Kinetic models
; Negative activation energy
; Pseudo-second order model
; Graphene
英文摘要: Some graphene-based adsorbents such as mesoporous graphene oxide/TiO2 nanocomposite, thermally treated graphene nanosheets, holey graphene frameworks and 3-D graphene-based porous adsorbent have recently been introduced as promising adsorbents for post-combustion CO2 capture while, their CO2 adsorption kinetics and mechanisms have not sufficiently been reported by the scholars. To begin, in this study, CO2 capture kinetics of these adsorbents are investigated by different adsorption kinetic models including pseudo-first order model, pseudo-second order model, Avrami model, and the fractal-like exponential kinetic model. Subsequently, the Eyring and Arrhenius equations are used to determine the activation parameters related to the CO2 adsorption on these adsorbents. Furthermore, a mechanism is proposed to describe the negative activation energy assessed for CO2 adsorption on the studied adsorbents. Eventually, the rate-limiting kinetic models including interparticle diffusion model, intraparticle diffusion model and Boyd's film diffusion model are applied to determine CO2 capture mechanisms on the mentioned graphene-based adsorbents. © 2017 Elsevier Ltd. All rights reserved. 资助项目: Iran National Science Foundation
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52635
Appears in Collections: 影响、适应和脆弱性
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Recommended Citation:
Kudahi S.N.,Noorpoor A.R.,Mahmoodi N.M.. Determination and analysis of CO2 capture kinetics and mechanisms on the novel graphene-based adsorbents[J]. Journal of CO2 Utilization,2017-01-01,21